• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention relates to a self-ligating orthodontic casing (100, 200) comprising a base (101, 201), a body (105, 205), a groove (115, 215) which is intended to receive an orthodontic arch (400). and which has an opening (115d, 215d) opening towards the occlusion plane (PO), and a movable closing element (130, 230) of the groove which is movable between a closed position and an open position throat (115, 215). The housing according to the invention is essentially characterized in that it comprises a single means for locking the movable element (130, 230) in the closed position and the retention of this movable element (130, 230) in the position of opening of the groove (115, 215).
    公开号:FR3038828A1
    申请号:FR1556712
    申请日:2015-07-16
    公开日:2017-01-20
    发明作者:Jean-Christophe Merly
    申请人:JLH；
    IPC主号:
    专利说明:

    The present invention belongs to the technical field of orthodontic treatment devices and concerns a self-ligating orthodontic housing, as well as an assembly comprising a plurality of these housings. Orthodontics is a specialty of dentistry whose purpose is to correct postures and orientations of the jaw and / or teeth. To do this, practitioners use specific devices, such as dental appliances, which are composed of housings known in the technical field under the name of "brackets".
    In the composition of the dental appliance, housings are bonded to teeth to be treated and interconnected by an orthodontic arch, such as a mechanical wire. Correction of the position of the teeth or their orientation is achieved through forces applied to the teeth through the orthodontic arch.
    Well known orthodontic cases are of the type comprising a body which is attached to a tooth and which has a groove in which is received the arch or orthodontic wire. Fins are provided to maintain the arc in the groove through fasteners, such as elastomeric ligation yarns or metal strands. The throat receiving the orthodontic arch may have a round, square or rectangular section. This category of housings has some disadvantages among which we mention the friction generated between the fasteners and the orthodontic arch which requires the application of significant forces to move the teeth. This results in some discomfort for patients and longer treatment.
    Another category of orthodontic housings is that of so-called self-ligating casings. The self-ligating casings comprise a closure means of the groove which is a movable element between a so-called closing position in which it closes the access to the groove and a so-called opening position in which it releases access to the throat. In such self-ligating casings, the groove is the part that receives the orthodontic arch and is closed by the closure means.
    Compared to the previous category, these self-ligating housings have a number of advantages. In particular, they do not require the use of excessive forces during treatment and generate less friction. In addition, there is greater ease of use for the practitioner resulting in reduced chair time for the patient and reduced treatment time. They have better hygiene conditions because they retain less plaque and food. Within this category are classified so-called self-ligating active boxes and so-called passive self-ligating boxes.
    In an active self-ligating casing, the movable closure element is provided with elastic properties and ensures the maintenance and the plating of the arc in the bottom of the groove, while allowing the expression of the elasticity of the arc, but also by increasing the friction between the bow and the groove during the tooth translation.
    In a passive self-ligating casing, the movable element behaves like the fourth wall of the groove, thus allowing its closure without the orthodontic arc being totally constrained to the bottom thereof. This configuration allows an improved sliding of the arc in the groove, but decreases the expression of the elasticity of the arc when its dimensions are smaller than those of the groove.
    Among the cases used in orthodontic treatment, there are still those whose insertion of the arc is called "horizontal" and those whose insertion of the arc is called "vertical". The distinction is made according to the orientation of the opening of the groove which is, in the case of the horizontal insertion, oriented in the vestibulo-lingual or antero-posterior axis, and in the case of the vertical insertion, oriented in the gingivo-occlusal plane, when the casing is placed in the mouth of a patient. The insertion along a horizontal plane of the arc in the groove imposes a greater thickness of the housing body than when the insertion is carried out vertically. This characteristic generates friction against the oral mucosa and discomfort for the patient as well as decreased aesthetics. Moreover, this characteristic adversely affects the correction of rotations of the dental elements by means of small-sized wires.
    Many self-ligating casings are now known. Unfortunately, they often have complex mechanics to machine, to manufacture or to manipulate. In addition, they are not totally effective in reducing the phenomena of friction between them and the orthodontic arch. By way of example, the European patent application published under the number EP 2 392 288 describes a self-ligating casing 1 comprising a base 2 having an attachment face on the surface of a tooth (Figs 12 to 16). . A body 3 extends from the base and has a groove 4 which opens towards the occlusion plane PO and which is intended to accommodate an orthodontic arch by so-called vertical insertion, ie in the axis gingival occlusal. The housing 1 comprises a closing means 5 of the groove 4 which is a member movable between a closed position in which it closes the groove (Figs 13, 16) and an open position in which it releases the access to the groove 4 (Figs 12, 15). The movable closure element 5 is in the overall form of a "U". In the closed position, a first leg 51 of the "U" closes the groove while the second leg 52 is opposite the groove 4 relative to the first leg. The contact surface between the arc and the closure means is important which increases the friction phenomena with the body 3 and decreases the efficiency of tooth movement, resulting in a longer treatment. Since the branches 51, 52 are located one above the other in the closed position, there is a minimum height constraint (h) of the housing 1 and minimum depth (p) of the groove 4 to accommodate the branches and the orthodontic arch. The case is therefore too bulky and tends to be close to the gum. It follows a risk of inflammation of the gums by accumulation of food between the housing and the gum. In addition, too much volume is detrimental to aesthetics and comfort. Furthermore, the closing means 5 is relatively narrow relative to the body 3 and does not close the groove 4 along its entire length (Figs 15, 16). As a result, there is a risk of rocking motion of the housing as it moves over the orthodontic arch during treatment. Beyond critical angulation, there is a phenomenon of jamming and blocking the movement of the housing along the arc. The movable element 5 has a locking means in the closed position in the form of two wings 53, 54 arranged on the second branch 52 and separated from each other by a gap, each wing meeting a stop 6 of the body 3 in this closed position (Fig. 16). This locking means is not completely effective, the movable member 5 can move slightly. During the passage of the movable element 5 from the closed position to the open position, a force must be applied to the movable element so that the wings 53, 54 of the second branch 52 converge with one another. in the direction of the other so as to cross the stop 6. The application of this force by a handling tool is not easy and there is a risk of detachment of the housing of the tooth. The movable element 5 has, moreover, a retaining means in the open position to prevent the movable element falls into the oral cavity. This retaining means, which differs from the blocking means, is arranged on the first leg 51 in the form of a rectangular slot 55 capable of sliding along a guide 7 that the body presents (Figs 14, 15). It is difficult if not impossible to completely remove the movable closure member 5 if replacement is necessary.
    One of the aims of the present invention is to propose a self-ligating casing said vertical insertion of the orthodontic arch, including passive type, which is simple and inexpensive design and use, which is effective in the treatment of the positions and orientations of the teeth, which is as discrete as possible, that is to say which has good aesthetic characteristics, which has a small footprint, has a smooth front or labial face and has the least possible asperities and means of retaining food or dental plaque. Moreover, it would be advantageous to have means for blocking and retaining the movable closure element which is simpler, more solid, easier to handle and which does not interfere with the effectiveness of the displacement treatment. orientation of the teeth. To this end, the invention relates to a self-ligating orthodontic casing intended to be fixed to the surface of a tooth of a patient of the type comprising: a base having an attachment surface on the surface of a tooth, a body , extending from the base, having an anterior face opposite to the attachment face, two lateral faces and a rear face connected to the base, - a groove, intended to receive an orthodontic arch, which is delimited by a wall of the bottom and two side walls, which crosses the body from one side from one of its lateral faces to the other, and which has an opening opening in the direction of the occlusion plane when said housing is fixed on a tooth, - a movable closing member of the groove, which is a member movable in translation between a closed position of the groove in which it closes the access to said groove and an open position in which it liberates access to said throat.
    According to the invention, the housing is characterized in that: the body comprises a rear portion connected to the base and an anterior portion which is opposite the base relative to said groove, and through which is arranged a passage for the movable element, the passage having an opening accessible from the front face of the body and an opening opening towards the groove, - the movable closure member is movable in translation in the vestibulo-lingual axis within said passage and has an anterior wall from which extend in the same plane, two lateral branches serving as a guide to the movable element inside said passage and at least one central branch which comprises a means for locking the movable element in the closed position of the groove in which its anterior wall is flush with the anterior face of the body and a means for retaining the element t mobile in the open position in which it is partially only projecting from the front face of the body, said locking means and retaining means being a same locking and retaining means.
    The housing according to the invention contains a reduced number of parts which has the effect of facilitating its manufacture, its installation and its use by the practitioner. It is in a one-piece appearance which, when the movable member is in the closed position, has on its faces any roughness or roughness that may be detrimental to the aesthetic and likely to retain food. The anterior surface of the body, which is the face visible from outside the mouth appears perfectly smooth in this closed position. In the closed position, the locking and retaining means of the movable element ensures the perfect maintenance of the orthodontic arch in the groove. In the opening position of the groove, the movable element is stopped in its stroke by the same locking and retaining means thus avoiding falling into the mouth of the patient. The opening of the groove for the insertion of the orthodontic arch in the occlusion direction confers a thickness of the body of the lower housing to the thickness of the housings whose groove opens in a horizontal direction, or vestibulo -linguale. This characteristic reduces the phenomena of friction against the lips.
    Moving the movable member within the passageway along the vestibulo-lingual axis rather than by rotation facilitates handling and reduces the risk of patient injury that would be likely to occur by sliding a handling tool. . The use of the same means ensuring both the locking of the movable element in the closed position of the groove and its retention in the open position considerably limits the difficulties of manufacture of the housing and the number of elements necessary for its good functioning.
    In addition, the planar configuration of the movable closure member reduces the height of the housing.
    In order to facilitate the reading of the description which follows, the housings according to the invention are described in connection with the teeth on which they are intended to be fixed and thus, in connection with the plans and axes commonly used in dentistry. Thus, in the present application, the term buccal, labial or oral surface of a tooth, the face of the tooth located at the outer portion of the dental arch and which is in contact with the cheeks and lips. The term "lingual surface" of a tooth means the dental surface located on the side of the tongue, therefore the face opposite to the buccal surface. By occlusion plane is meant the virtual surface on which the maxillary and mandibular occlusal surfaces meet when closing the mouth. The occlusal plane is perpendicular to the planes containing the buccal and lingual surfaces of a tooth. Thus, the direction of the occlusion plane, or gingivo-occlusal direction, is understood to mean the direction extending from the gums towards the plane of occlusion, parallel to the planes containing the buccal and lingual surfaces of a tooth. In everyday language used by those skilled in the art, the direction of the occlusal plane is often referred to as the "vertical".
    Advantageously, the rear portion of the body has one or more housing having an opening opening towards said groove and provided to accommodate the free ends of the branches of the movable closure element when the latter is in the closed position.
    The ends of the branches are thus supported in a portion of the body which gives great stability to the movable member in the closed position of the groove.
    According to one embodiment of the invention, the central branch of the movable closing element comprises, as a locking and retaining means, at its free end, at least one lug protruding from the face opposite to the wall of bottom of the groove in the direction of the occlusion plane, the lug or lugs having a guide surface which is adapted to cooperate with abutments that has the body, so as to guide the movable member from the open position until in the closed position, and a retaining surface which is adapted to cooperate with said stops that the body has, so as to lock and retain the movable member in the closed position or in the open position.
    Advantageously, at least one of the stops with which cooperates or the lugs in the closed position is arranged in the housing that has the body.
    Advantageously, at least one of the abutments with which cooperates or lugs of the central branch in the open position is arranged at the entrance of the passage which opens in the direction of the groove.
    According to such an embodiment of the invention, when the movable closure member is moved to the closed position of the groove, that is to say in a buccolingual direction when the housing is in the mouth of a patient, the lug or pins present at the free end of the central branch will meet and cooperate with one or stops that the body presents. The guide surface of each lug allows the passage of the free end of the central branch in the housing. The retaining surface is then against the abutment and allows the blocking of the movable element which can not move in the opposite direction, that is to say the lingual-buccal direction.
    According to one characteristic of the invention, the movable closure member has at least one attachment means or gripping by a handling tool, in particular arranged on the central branch of the movable member.
    Advantageously, the movable element has two gripping means or gripping by a handling tool, being in the form of recesses or recesses, one through the front wall of the movable element, the other practiced in the free end of the central branch.
    Such a tool is used to exert a slight pressure on the central branch to lift and pull in the lingual-buccal direction. This allows the passage of the lug above the stop and the movement of the movable member from the closed position to the open position.
    According to one embodiment of the invention, the movable closing element has two lateral faces, the distance between these two faces being at least equal to 90% of the distance between the two lateral faces of the body.
    The width of the movable member is such that it closes the groove in whole or almost all, in the closed position. Such a feature also makes it possible to prevent the cascading movement of the casing as it moves over the orthodontic arch during the treatment period.
    According to one embodiment of the invention, the lateral branches of the movable closure member have a cylindrical cross section.
    According to another embodiment of the invention, each lateral branch of the movable element has several faces, one face of which faces the bottom wall of the groove when the movable element is in the closed position and a opposite side thereof, said faces converging towards one another in a direction extending from the longitudinal median axis of the movable member towards the outside.
    This embodiment is particularly interesting because it limits the contact area between the branches of the movable element and the dental arch housed in the groove so as to limit friction.
    Advantageously, the passage formed in the front portion of the body has a cross section complementary to the cross section of the movable member.
    According to one embodiment of the invention, the passageway in the front portion is closed laterally.
    In this embodiment, the lateral faces of the lateral branches of the movable element are not flush with the lateral faces of the body.
    According to one embodiment of the invention, the passageway in the front portion is laterally open.
    In this embodiment, the lateral faces of the lateral branches of the movable element are flush with the lateral faces of the body. This embodiment generates less friction when moving the movable member in the passage.
    According to one embodiment of the invention, the portion of the throat receiving the orthodontic arch has a round, square or rectangular, preferably square.
    Advantageously, the anterior portion of the body is traversed by a secondary passage, of preferentially cylindrical or round section, extending from one lateral face of the body to the other, for the passage of a secondary wire.
    Advantageously, the body has attachment means or attachment, such as hooks or notches, dental displacement means other than the orthodontic arch.
    It is conceivable to hang or fix the case according to the invention, any known means, such as son, chain or elastic, participating in the correction of the position or angulation of the teeth, in addition to the arc orthodontic lodged in the throat.
    Finally, the invention relates to a set of self-ligating orthodontic housings, comprising at least two self-ligating orthodontic housings as described above.
    The characteristics of the invention mentioned above, as well as others, will appear more clearly on reading the following description of an exemplary embodiment, said description being given in relation to the attached drawings, among which:
    Fig. 1A is a perspective view of an orthodontic casing according to a first embodiment of the invention, the movable closure element being in the closed position of the groove,
    Fig. 1B is a perspective view of a movable closure element according to the first embodiment of the invention,
    Fig. 2A is a perspective view of an orthodontic casing according to a second embodiment of the invention, the movable closure element being in the closed position of the groove,
    Fig. 2B is a perspective view of a movable closure member according to the second embodiment of the invention,
    Fig. 3 is a perspective view of an orthodontic casing according to a first embodiment of the invention, the movable closing element being in the opening position of the groove,
    Figs. 4 and 5 are side views of an orthodontic casing according to a second embodiment of the invention, the movable closure element being in the open position of the groove in FIG. 4 and in the closed position of the groove in FIG. 5
    Figs. 6A and 6B are sectional sectional views of an orthodontic housing according to a first embodiment of the invention, the movable closure element being in the open position of the groove in FIG. 6A and in the closed position of the groove in FIG. 6B,
    Figs. 7A to 7E are diagrammatic profile representations of an orthodontic casing according to the first embodiment of the invention, the movable closing element being in the open position of the groove in FIG. 7A and 7E, in the closed position of the groove in FIGS. 7C and 7D, in the intermediate position in FIG. 7B,
    Fig. 8 is a front view of an orthodontic casing according to the second embodiment of the invention, in the absence of a movable closing element,
    Fig. 9 is a front view of an orthodontic casing according to the first embodiment of the invention, in the absence of a movable closure element,
    Fig. 10 is a front perspective view of a movable closure member according to the first embodiment,
    Fig. 11 is a view from below of a movable closure element according to the first embodiment,
    Figs. 12 and 13 are side views of a self-ligating casing according to a state of the art,
    Fig. 14 is a perspective view of a mobile closure element of the state of the art,
    Figs. 15 and 16 are cross-sectional views of a self-ligating casing according to the state of the art, the closure element being in the open position of the groove in FIG. 15 and in the closed position in FIG. 16.
    In connection with all the Figs. 1 to 11 are represented passive-type self-ligating orthodontic housings according to a first embodiment 100 (FIGS, IA, IB, 3, 6A, 6B, 7A to 7D, 9, 10 and 11) and according to a second embodiment Embodiment 200 (Figs 2A, 1B, 4, 5, 8).
    As shown in particular in Figs. 1A, 2A, 3 and 4, a self-ligating orthodontic casing of the passive type according to the invention 100, 200 comprises a base 101, 201 having a fixing face 103, 203 on the surface of a tooth. Such a housing is particularly intended to be fixed on the buccal surface of a tooth, that is to say the face of the tooth visible from outside the mouth of a patient. Fixing the housing can be achieved for example by gluing or by any method well known to those skilled in the art.
    From the base 101, 201, extends a body 105, 205, having an anterior face 107, 207 opposite to the fixing face 103, 203. The front face 107, 207 is the face of the housing 100, 200 which is visible from outside the mouth of a patient.
    The body 105, 205 has two side faces 109, 209, and 110, 210, a lower face 111,211 and an upper face 112, 212.
    The upper face 112, 212 is the face of the housing 100, 200 which is adjacent to the gums in the mouth of a patient. It is therefore a gingival face. The lower face 111,211 is the face of the housing 100, 200 which is opposite the occlusion plane PO of the mouth of the same patient (Figs. ΙΑ, 2A, 3, 4, 5).
    The housing 100, 200 has a groove 115, 215 intended to receive an orthodontic arch 400. The groove 115, 215 passes through the body 105, 205 from one side from one of its lateral faces 109, 209 to the other side face 110, 210. The cross section of the groove of the housings 100 and 200 is rectangular.
    The groove 115, 215 is delimited by a bottom wall 115a, 215a and two side walls 115b, 215b and 115c, 215c (Figs ΙΑ, 2A and 6). The groove 115, 215 further has an opening 115d, 215d which opens vertically towards the occlusion plane PO when the housing 100, 200 is fixed on a tooth (see arrows in Figs IA and IB). The opening 115d, 215d allows the insertion of the orthodontic arch 400 and its housing in the groove 115, 215, against the bottom wall 115a, 215a.
    A movable closing element 130, 230 of the groove 115, 215, in particular visible in detail in FIGS. IA, IB, 10 and 11, is provided to maintain the arc 400 in place in the groove 115, 215. It is an element that is movable in translation between a closed position of the groove 115, 215 in which it closes the access to the groove from the outside of the housing 100, 200 (Figs. ΙΑ, 2A, 5) and an open position in which it releases access to the groove (Figs 3, 4 ). In the closed position (Figs. ΙΑ, 2A) the arc 400 is held in the groove 115, 215 and can not escape through the opening 115d, 215d which is closed by the closing means 130, 230 In the open position (Figs 3 and 4) the arc 400 can be dislodged from the groove 115, 215 through the opening 115d, 215d which is thus not blocked by the closing means 130, 230.
    According to the invention, a passage 119, 219 for the movable closure element 130, 230 is arranged through an anterior portion 118, 218 that the body 105, 205 has. This anterior portion 118, 218 is opposite the base 101, 201 relative to the groove 115, 215. The passage 119, 219 for the movable closure member 130, 230 arranged through the front portion 118, 218 has an opening 119a, 219a accessible from the anterior face 107, 207 of the body and an opening 119b, 219b which opens into the groove 115, 215 (Figs 4, 5, 6, 8, 9, in particular). In this way, inside the passage 119, 219, the movable closing element 130, 230 can be movable in translation in the vestibulo-lingual axis (V-L) between the closed and open positions.
    In addition, the body has a rear portion 117, 217 adjacent to the base 101, 201 or in the extension thereof. The posterior portion 117, 217 has a housing 120, 220 which has a bottom wall, such as the bottom wall 121, and which opens and opens into the groove 115, 215, in the lingual-vestibular direction and is located in the axis of the passage 119, 219, in particular in the axis of the opening 119b, 219b (Figures 3, 4, 5, 7). The movable closing element 130, 230 has an anterior wall 131, 231 from which extend, in the same plane, two lateral branches 132, 232 and 133, 233, the lateral branches each having free ends (FIGS. IB, 2B, 10, 11). The lateral branches 132, 232 and 133, 233 serve as a guide for the movable element 130, 230 inside the passage 119, 219. The movable closing element 130, 230 also has a central branch 135, 235 which supports a blocking and retaining means 134, 234 making it possible, on the one hand, to block the movable element 130, 230 in the closed position of the groove 115, 215 and, on the other hand, to retain the mobile element 130 , 230 in the open position. A single means is thus used to maintain the movable member 13, 230 in the two positions, that is to say closing and opening.
    The central branch 135, 235 is made of a material giving it elastic properties allowing a slight flexion in a direction extending on either side of the plane containing all the branches 132, 133 and 135 of the element 130 and 232, 233 and 235 of the element 230 (arrows f, Figs IB, 2B).
    The central branch 135, 235 of the movable element 130, 230 has as locking means and retaining 134, 234, one or lugs arranged at its free end (Fig IB, 2B, 6, 7, 11) . Preferably, two lugs 134 ', 134 "are provided. However, they are considered as components of one and the same locking and retaining means 134 (FIG 11). Each lug, such as the lug 134, 234, projects from the lower face of the branch 135, 235, that is to say from the face which is opposite to the bottom wall 115a, 215a of the groove 115, 215 when the movable member 130, 230 is in the closed position (Figs 6, 7). The lug 134, 234 has a guide surface 134a, 234a and a retaining surface 134b, 234b which are intended to cooperate with stops that has the body 105, 205 in the closed and open positions. The retaining surface 134b, 234b is perpendicular to the face of the leg 135, 235 from which it projects. The guide surface 134a, 234a forms an acute angle with the side of the branch 135, 235 from which it projects and converges towards the retaining surface 134b, 234b.
    In the opening position of the groove 115, 215, the movable closing element 130, 230 partially projects only from the anterior face 107, 207 of the body 105, 205. The access to the groove is released and a Dental arch 400 can be inserted (Figs 3, 4, 6A, 7A). The retaining surface 134b, 234b of the lug 134, 234 meets a stop 140, 240 provided at the inlet 119b, 219b of the passage 119, 219 (Figs.6A, 7A). The movable closure means 130, 230 is then stopped in its path that it can not continue in the lingual-buccal direction. The open position is maintained. It can not fall into the patient's mouth. The abutment 140, 240 is indicated by an edge of the inlet 119b, 219b of the passage 119, 219. However, any other abutment configuration at the inlet 119b 219b is envisaged.
    Once dental tare 400 housed in the groove 115, 215, the movable closure element 130, 230 is moved manually in the buccolingual direction until it reaches the closed position (FIGS., 5B, 7B, 7C ).
    During the movement, the pin 134, 234 encounters a stop 141, 241 arranged in the housing 120, 130. The guide surface 134a, 234a faces the stop 141, 241. This surface being inclined, a slight pushing force exerted on the movable element 130, 230 produces a flexion of the free end of the central branch 135, 235 in a direction extending out of the plane containing said branches and upwards (see arrow Fig. 7B), allowing at the guide surface 134a, 234a to slide along the stop 141, 241 to cross it (Fig. 7B, 7C).
    In the closed position of the groove 115 and 215, the free ends of the branches 132, 133 and 135 of the movable closure element 130, as well as the free ends of the branches 232, 233, 235 of the movable closing element 230, are housed in the housings 120 and 220, respectively (Figs 6B, 7C, 7D).
    In this closed position, the front wall 131, 231 of the closure means 130, 230 is flush with the front face 107, 207 of the body 105, 205. Thus, in this closed position, the face 107, 207 has a completely smooth appearance (Figs 1A and 2A, 6B, 7C).
    It should be noted that the movable closing element 130, 230 encloses the groove 115, 215, by means of its branches 132, 232, 133, 233 and 135, 235 and that the empty spaces existing between these branches have the consequence of limit the friction surface between the movable closure element 130, 230 and Tare 400. In addition, the central branch 135, 235 has a thickness less than that of the branches 132, 232 and 133, 233 and is not in contact with Tare 400. The movable member 130, 230 is locked in the closed position by the lug 134, 234. The retaining surface 134b, 234b of the lug 134, 234 meets the abutment 141, 241 of the housing 120, 130. The movable closure means 130, 230 is then blocked and can not move in the lingual-buccal direction. It can not move in the buccolingual direction either, the free ends of the branches of the movable element 130, 230 being affixed against the bottom wall 121, 221 of the housing 120, 220 (FIGS., 6B, 7C). . For this purpose, the distance between the retaining surface of the lug 134, 234 and the free end of the branch 135, 235 and equal to the distance between the stop 141, 241 of the bottom wall 121, 221.
    The passage of the movable closure element 130 from the closed position to the open position is achieved by means of a handling tool 500 provided to exert a force on the central branch 135 so as to lift the free end in a direction opposite to the abutment 141 towards the upper face 112, and to pull it in the lingual-buccal direction (FIG 7D). The pressure exerted by the tool 500 produces a bending of the central branch 135 out of the plane containing the branches 132, 133 and 135 (arrow f2). The lug 134 can thus cross the stop 141.
    When the practitioner wishes to completely remove the movable closure member 130, for example to replace it, the passage of the lug 134 beyond the stop 140 is made in a manner identical to the passage of the stop 141, using of the same tool 500 by applying a force β of identical components to the force 2 2 (FIG 7E), that is to say in a direction opposite to the stop 140 towards the upper face 112 and in the lingual-buccal direction. The movable member 130 can then borrow the passage 119 to exit through the opening 119a.
    The displacement of the movable closure member 230 and the passage of the lug 234 beyond the stops 240 and 241 is performed in a manner identical to that described above concerning the movable closure element 130.
    To facilitate gripping by the handling tool 500 of the movable element 130, 230 it has hooking or gripping means which are arranged on the central branch 135, 235. For example, the attachment means or socket are in the form of recesses or recesses, one, such as the hollow 142, through the front wall 131, 231 of the movable member 130, 203 and the other 143, 243 formed in the end free of the central branch 135, 235 (Figs IB, 2B, 11). Such means allow insertion of the tip or tip of the tool 500. The attachment means 143, 243 allows the tool to exert the force 2 to dislodge the free end of the branch 135, 235 of the housing 120, 220. The attachment means 142, 242 allows the tool 500 to exert the force β to dislodge the free end of the central branch 135, 235 of the housing 120, 220. To allows the tool 500 to reach these gripping or gripping means, passages such as the passages 244 and 243 in the body 205 are provided (Figure 5).
    The lateral branches 132, 232 and 133, 233 of the movable closure element 130, 230 serve as a guide inside the passages 119, 219 during the movements. They have two lateral faces 132a, 232a and 133a, 233a (FIGS. 2A, 2B, 11). According to the first embodiment, the distance between the two lateral faces 132a, 133a of the movable element 130 is equal to the distance between the two lateral faces 109 and 110 of the body 105. According to the second embodiment, the distance between the two lateral faces 232a, 233a of the movable element 230 is at least equal to 90% of the distance between the two lateral faces 209 and 210 of the body 205. As a result, the movable element extends in all or almost all of one side face 109, 209 of the body 105, 205 to the other 110, 210. This feature enhances the stability of the housing 100, 200 during treatment and movement along the orthodontic arch. In addition, the groove 115, 215 is closed over the entire length.
    The lateral branches 232 and 233 of the mobile element 230 of the self-ligating casing 200 have a round cross-section (FIG 2 B).
    The passage 219 formed in the anterior portion 218 of the body 205 has a cross section complementary to the cross section of the movable member 230 and is closed laterally (Fig 8).
    It further comprises pillars 222 and 223 provided for separating the passage 219 into three sections 2191, 2192 and 2193 respectively receiving the three branches 232, 233 and 235. This feature enhances the stability of the movable member 230 and reduces the risks of friction.
    The lateral branches 232 and 233 respectively take the sections 2192 and 2191 of the passage 219.
    The lateral branches 132 and 133 of the mobile element 130 of the self-ligating casing 100 have six faces, one face of which, such that the face 1331 is facing the bottom wall of the groove 115a when the moving element 130 is in the closed position and a face 1332 opposite the face 1331, said faces converging towards each other in a direction extending from the longitudinal median axis (Ax) of the movable member 130 in the direction from the outside (Fig. 10).
    This embodiment is advantageous because the contact between the branches 132, 133 and the orthodontic arc 400 is reduced at points which reduces the friction phenomena.
    The passage 119 formed in the anterior portion 118 of the body 105 receiving the movable member 130 has a cross section complementary to the cross section of the movable member 130 (Fig. 9). Pillars 122 and 123 are also provided to separate the passage 119 into three sections 1191, 1192 and 1193 respectively receiving the three branches 132, 133 and 135.
    It is noted that the passage 119 is open laterally, that is to say opens laterally on the lateral faces 109 and 110 of the body 105. Since the distance between the two lateral faces 132a, 133a of the movable element 130 is equal to the distance between the two lateral faces 109 and 110 of the body 105, the side branches 132 and 133 are flush with the side faces 109 and 209. This feature also limits the friction of the movable member 130 in the body 105 and improves the comfort of the patient.
    Optionally, there may be provided a raised pattern 146, 246 projecting from the face of the leg 135, 235 which is opposite the bottom wall 115a, 215a of the groove 115, 215 in the closed position. The embossed pattern 146, 246 is intended to meet the stop 140, 240 at the inlet 119b, 219b of the passage 119, 219 when the movable member 130, 230 is in the closed position (Fig. 6B, 7C). to strengthen if necessary the locking of the movable member 130, 230 in the closed position.
    Also advantageously, the anterior portion 118, 218 of the body 105, 205 is traversed by a secondary passage 150, 250 of preferentially cylindrical or round section, extending from a lateral face 109, 209 and 110, 210 of the body 105, 205 to the other, for the passage of a secondary wire 450.
    The self-ligating housings 100 and 200 may be made of metal, ceramic or plastic, or any other material adapted to the use of these housings.
    权利要求:
    Claims (17)
    [1" id="c-fr-0001]
    1) self-ligating orthodontic casing (100, 200) comprising: - a base (101, 201) having a fixing face (103, 203) on the surface of a tooth, - a body (105, 205), extending from the base (101, 201), having an anterior face (107, 207) opposite to the attachment face (103, 203), two lateral faces (109, 209, 110, 210), - a groove (115, 201) 215) for receiving an orthodontic arch (400) which is delimited by a bottom wall (115a, 215a) and two side walls (115b, 215b, 115c, 215c), which passes through the body (105, 205) from one of its lateral faces (109, 209) to the other (110, 210), and which has an opening (115d, 215d) opening towards the occlusion plane ( PO) when said housing (100, 200) is fixed on a tooth, - a movable closing element (130, 230) of the groove which is movable between a closed position of the groove (115, 215) in which it closes the ccès said groove (115, 215) and an open position in which it releases access to said groove (115, 215), characterized in that: - the body (105, 205) has a posterior portion ( 117, 217) connected to the base (101, 201) an anterior portion (118, 218) which is opposite the base (101, 201) relative to said groove (115, 215), and to through which is provided a passage (119, 219) for said movable member (130, 230) having an opening (119a, 219a) accessible from the anterior face (107, 207) of the body (105, 205) and an opening ( 119b, 219b) which opens out in the direction of said groove (115, 215), the movable closing element (130, 230) is movable in translation in the vestibulo-lingual axis (VL) inside said passage (119, 219) and has an anterior wall (131, 231) from which extend in the same plane, two lateral branches (132, 232) (133, 233) serving as a guide to the el movable member (130, 230) within said passage (119, 219) and at least one central leg (135, 235) which includes means for locking the movable member (130, 230) in the closed position of the groove (115, 215) in which said anterior wall (131, 231) is flush with the anterior face (107, 207) of the body (105, 205) and a retaining means of the movable element (130, 230) in the open position in which said anterior wall (131, 231) partially projects only from said anterior face (107, 207), said locking means and said retaining means being a same blocking and retaining means (134, 207); , 234).
    [0002]
    2) Self-ligating orthodontic casing (100, 200) according to claim 1, characterized in that said posterior portion (118, 218) has one or more housings (120, 220) having an opening opening towards said groove (115). , 215) and provided to accommodate the free ends of said legs (132, 232, 133, 233, 135, 235) when the movable closure member (130, 230) is in the closed position.
    [0003]
    3) self-ligating orthodontic casing (100, 200) according to claim 1 or 2, characterized in that the central branch (135, 235) of the movable member (130, 230) comprises as locking means and retained, at its free end, at least one lug (134, 234) protruding from the face opposite to the bottom wall of the groove (115a, 215a) in the direction of the occlusion plane (PO), each lug ( 134, 234) having a guide surface (134a, 234a) which is adapted to cooperate with abutments (140, 240, 141, 241) provided by the body (105, 205) so as to guide the movable member (130). , 230) from the open position to the closed position, and a retaining surface (134b, 234b) which is adapted to cooperate with said stops (140, 240, 141, 241) so as to block and retain the movable element (130, 230) in the closed position or in the open position.
    [0004]
    4) self-ligating orthodontic casing (100, 200) according to claim 3, characterized in that at least one of the stops (141, 241) with which cooperates or the lugs (134, 234) in the closed position is arranged in the housing (120, 220) of the body (105, 205).
    [0005]
    5) self-ligating orthodontic casing (100, 200) according to claim 4 or 5, characterized in that at least one of the stops (140, 240) with which cooperates or the lugs (134, 234) in position d opening is arranged at the inlet (119b, 219b) of the passage (119, 219) which opens into the groove (115, 215).
    [0006]
    6) self-ligating orthodontic casing (100,200) according to one of the preceding claims, characterized in that the movable closure member (130,230) has at least one attachment means or gripping by a handling tool (500) , in particular arranged on the central branch (135, 235).
    [0007]
    7) self-ligating orthodontic housing according to claim 6, characterized in that the movable closure member (130, 230) has two attachment means or gripping by a handling tool (500), in the form of recesses or recesses one (142, 242) passing through the front wall (131, 231) of the movable closure member (130, 230), the other (143, 243) formed in the free end of the central branch (135, 235).
    [0008]
    8) self-ligating orthodontic casing (100, 200) according to one of the preceding claims, characterized in that the movable closing element (130, 230) has two side faces (132a, 133a) (232a, 233a), the distance between these two faces being at least equal to 90% of the distance between the two lateral faces (109, 110) (209, 210) of the body (105, 205).
    [0009]
    9) self-ligating orthodontic housing (200) according to one of the preceding claims, characterized in that said lateral branches (232, 233) of the movable member (230) have a round cross section.
    [0010]
    10) self-ligating orthodontic casing (100) according to one of claims 1 to 8, characterized in that each lateral branch (132, 133) of the movable member (130) has a plurality of faces, one side (1331). lying opposite the bottom wall of the groove (115a) when the movable member (130) is in the closed position, and a face (1332) opposite thereto, said faces (1331, 1332) converging to one another in a direction extending from the longitudinal median axis (Ax) of the movable member (130) towards the outside.
    [0011]
    11) self-ligating orthodontic casing (100, 200) according to one of the preceding claims, characterized in that the passage (119, 219) arranged in the front portion of the body (118, 218) has a cross section complementary to the cross section that presents the movable element (130, 230).
    [0012]
    12) Self-ligating orthodontic casing (200) according to one of the preceding claims, characterized in that the passage (219) arranged in the front portion (218) is closed laterally.
    [0013]
    13) self-ligating orthodontic housing (100) according to one of the preceding claims, characterized in that the passage (119) arranged in the front portion (118) is open laterally.
    [0014]
    14) Self-ligating orthodontic casing (100, 200) according to one of claims 1 to 12, characterized in that the portion of the groove (115, 215) receiving the orthodontic arch has a round, square or rectangular section, preferentially square.
    [0015]
    15) Self-ligating orthodontic casing (100, 200) according to one of the preceding claims, characterized in that the anterior portion (118, 218) of the body (105, 205) is traversed by a secondary passage (150, 250). ), of preferential round section, extending from one side face (109, 209) of the body (105, 205) to the other (110, 210), for the passage of a secondary wire (450).
    [0016]
    16) self-ligating orthodontic casing (100, 200) according to one of the preceding claims, characterized in that the body (105, 205) has hooking means or attachment, such as hooks or notches, of dental displacement means other than the dental arch.
    [0017]
    17) Set of self-ligating orthodontic housings, comprising at least two self-ligating orthodontic housings (100, 200) as described in one of claims 1 to 16.
    类似技术:
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    同族专利:
    公开号 | 公开日
    WO2017009231A1|2017-01-19|
    FR3038828B1|2017-08-11|
    US20170014207A1|2017-01-19|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US20130130189A1|2011-11-23|2013-05-23|Ronald M. RONCONE|Orthodontic bracket|
    EP2644150A1|2012-03-28|2013-10-02|Orthoarm, Inc.|Active self-ligating bracket|
    CN103271773A|2013-04-28|2013-09-04|杭州新亚齿科材料有限公司|Self-locking orthodontic bracket for tooth orthodontics|
    KR20150009765A|2013-07-17|2015-01-27|Sy이노베이션|Self ligature bracket for orthodontics|
    DE102013013098A1|2013-08-07|2015-02-12|Manfred Becht|Orthodontic bracket for attachment to an inside of a tooth|
    ITRM20100303A1|2010-06-04|2011-12-05|Orthodontic Manufacturer Sia S R L|ATTACHMENT DEVICE FOR ORTHODONTIC ARCHES OR WIRES AND RELATED METHOD OF APPLICATION OF AN ARC OR ORTHODONTIC WIRE.|
    US8550814B1|2012-08-16|2013-10-08|Monte Collins|Multi-component orthodontic bracket assembly|KR20170120731A|2016-04-21|2017-11-01|삼성디스플레이 주식회사|Flexible display device|
    US11147653B2|2020-02-11|2021-10-19|Tp Orthodontics Inc.|Orthodontic bracket having a movable ligating door|
    US11259899B2|2020-07-03|2022-03-01|Aadvance Technologies, Llc|Orthodontic device|
    法律状态:
    2016-07-29| PLFP| Fee payment|Year of fee payment: 2 |
    2017-01-20| PLSC| Publication of the preliminary search report|Effective date: 20170120 |
    2017-07-28| PLFP| Fee payment|Year of fee payment: 3 |
    2018-07-25| PLFP| Fee payment|Year of fee payment: 4 |
    2019-07-25| PLFP| Fee payment|Year of fee payment: 5 |
    2020-07-28| PLFP| Fee payment|Year of fee payment: 6 |
    2021-07-29| PLFP| Fee payment|Year of fee payment: 7 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1556712A|FR3038828B1|2015-07-16|2015-07-16|SELF-LATURING ORTHODONTIC HOUSING AND ASSEMBLY COMPRISING SEVERAL OF THESE HOUSINGS|FR1556712A| FR3038828B1|2015-07-16|2015-07-16|SELF-LATURING ORTHODONTIC HOUSING AND ASSEMBLY COMPRISING SEVERAL OF THESE HOUSINGS|
    US14/877,122| US20170014207A1|2015-07-16|2015-10-07|Self-ligating orthodontic brace and set comprising a plurality of such braces|
    PCT/EP2016/066283| WO2017009231A1|2015-07-16|2016-07-08|Self-ligating orthodontic bracket and assembly comprising several of these brackets|
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