DE202021103770U1 - Device for recording the jaw relation and occlusion - Google Patents

Abstract

Para-occlusal attachment, comprehensive
at least one holding element (1) for holding a sensor device, in particular for detecting the jaw relation and / or occlusion, on the teeth of the lower jaw (UK),
a front support section (3), which is curved in the state of use, for supporting the attachment in a front labial area of the teeth and / or on an underlying gum area and
one rear support section (5) each connected to the front support section for support in the area of the posterior teeth and / or the gum area behind them,
wherein each rear support section is shaped in such a way that it runs at least in sections in the mesial direction over at least one rear posterior tooth and / or the gums lying behind it.

Description

The invention relates to a para-occlusal attachment comprising at least one holding element for holding a sensor device for detecting the jaw relation and / or occlusion and a system comprising the holding device and a sensor device.

In connection with various dental services, especially the production of high-quality partial or full dentures or splints, the display and animation of virtual tooth surfaces in computer units is desirable. DE 102 18 435 A1 describes a method and a device for the 3-dimensional analysis of the movement of tooth surfaces of the upper jaw in relation to the lower jaw. A sensor holder for the lower jaw is shown from which a position sensor can be held.

Specifically, the DE 102 18 435 B4 a motion measurement system and a para-occlusal attachment for attaching a motion sensor to the lower jaw are described. The attachment consists of a tooth fastening part and a sensor holding part to which motion measurement sensors or markers of the motion analysis system (such as ultrasound or optical markers) can be attached. As an alternative to this, the sensor system of the movement measurement system can be connected directly and detachably to the tooth fastening part. Motion measurement sensors can include, for example, camera or laser sensors, magnetic sensors or sensors based on acceleration detectors or gyroscopes or combinations thereof. To compensate for head movements, reference or receiver sensors are attached to the upper jaw or over a head arch. Stationary sensor systems, such as cameras, may also be required.

To attach components of a movement measurement system specifically to the lower jaw (lower jaw) of a patient, brackets with a metal part are usually used, in which certain surface sections are bent to adapt to the outer curvature of the teeth, lined with plastic and held and glued to the lower jaw via the interdental surfaces. This is called a para-occlusal fixation. This has the essential advantage that an undisturbed bite and undisturbed tooth-guided movements are possible even when the fastening part is attached.

DE 10 2019 106 138 A1 describes a para-occlusal bracket that can be placed on the entire row of teeth of a patient's lower jaw and is fixed by means of an elastic or hard-elastic, sufficiently durable recording material or adhesive. In the central position of the bracket, a mounting sleeve protruding forward at right angles is arranged thereon, which is designed to fit the mounting pin of a sensor part to be attached to the bracket. In this embodiment, the fastening is carried out by pushing the assembly pin into the sleeve and frictionally or positively fixing the assembly pin in the sleeve.

the DE 20 2017 101 547 U1 the applicant discloses a para-occlusal attachment for fixing a measuring sensor system on the upper or lower jaw of a human or other vertebrate, which attachment comprises two jaw clamping arms and a connecting and pretensioning device for connecting the clamping arms. The clamping arms encompass the entire row of teeth of the corresponding jaw and are fixed to the jaw by bracing. This attachment is functionally very high quality, but structurally complex and therefore also costly.

It is therefore the object of the invention to provide a simple holding device for holding a sensor device on the lower jaw of a patient, which in particular on the one hand enables secure, positionally accurate fixation and on the other hand is inexpensive to manufacture.

The above-mentioned object is achieved by a para-occlusal attachment with the features of claim 1. Appropriate further developments of the inventive concept are the subject of the dependent claims.

It is essential that the proposed para-occlusal attachment preferably does not hinder the sliding or movement of the teeth of the upper jaw relative to the teeth of the lower jaw.

An essential idea of the invention is to design the attachment in such a way that it runs at least in sections in the mesial direction. As a result, the attachment on the lower jaw can be positioned comparatively quickly, easily and, in particular, with high accuracy (or predetermination).

Attachment to the teeth is advantageously not limited solely by an adhesive force (as in particular in the prior art). It was also recognized that gluing on the holder can be disadvantageous insofar as later removal can be comparatively cumbersome, especially when teeth are already loosened. In addition, the adhesive residues must then be removed.

Compared to the known attachment with clamping arms mentioned above, the para-occlusal attachment proposed here is not only Constructively much simpler and cheaper, but also basically easier to attach and remove again, and in particular the inconveniences and imponderables associated with mechanical bracing of a device in the mouth of a patient are eliminated.

The additional support in the rear area of the posterior teeth prevents the holding device (the attachment) from slipping off the anterior teeth and thus finds a firm hold on the lower teeth, even if the teeth are in motion or in occlusion during a chewing analysis. Another particular advantage is that the attachment has a largely defined relationship to the lower jaw teeth, which in turn results in or can be derived from a fixed relationship and position to the sensor holding part and thus to the lower jaw measuring sensor.

The holding device is preferably in an arc shape, in particular in accordance with the contour of the arrangement of the teeth of the lower jaw, and / or can be brought into such a shape, for example by bending. The front support section is located in a middle (central) section of the attachment. A rear support section then adjoins the front support section on both sides. At least one of the rear support sections in turn has a section which runs in the mesial direction, in particular at least in sections, over at least one, preferably the rearmost, posterior tooth and / or the gum lying behind it.

Usually, a rear support section is provided on both sides of the attachment for support in the area of the side teeth, of which at least one, preferably both, is designed to run mesially at least in sections according to the above statements. In principle, however, an embodiment of the proposed holding device is also conceivable which comprises only a single rear support section for holding only one of the two rear posterior tooth or gum areas.

Specifically, the respective rear section is designed in such a way that it preferably runs over at least one, preferably the rearmost, posterior tooth and / or the gum (distally) behind it. This should in particular mean that (in the state of use) the section running in the mesial direction (hereinafter also referred to as the mesial section) rests on an upward-facing surface of the corresponding posterior tooth or the corresponding posterior teeth and / or the gums lying behind. The respective mesial section preferably extends over the entire upward-facing surface and possibly even beyond it, possibly bending downwards and / or kinking.

The rear support section preferably has a first, in particular elongated, section for contact with a corresponding labial surface and / or a second, in particular curved and / or angled and / or flat section, which runs in the mesial direction, preferably perpendicularly from the first section .

The rear support section is preferably a lateral extension starting from or directly adjoining the front support section, which can rest on outer surfaces of the side (and possibly front) teeth and in particular extend into a rear area of the side teeth can. The extension preferably encloses the rearmost posterior teeth and / or is supported on or on the gums lying behind.

In embodiments, the rear support section can be displaced with respect to the front support section and / or can be flexibly fastened with respect to it or on it. Corresponding fastening means, for example for establishing a plug-in or clamping connection, are then provided on the rear support sections and on the front support section, the exact design of which is within the scope of professional action.

Alternatively, the attachment can be made in one piece, in particular manufactured by means of 3D printing or another additive manufacturing method and / or by means of milling technology. For example, the respective rear section can basically be produced using 3D printing and any corrections and / or fine work can be incorporated using milling technology.

The rear support section is preferably designed for section-wise support on an inner side of a side tooth or several side teeth and / or the gums lying behind. In use, the rear section (or its mesial section) can therefore preferably also contact such an inner side. As a result, a further improvement in a predefined relative position of the holding device can be achieved.

In use, the rear support section can be guided over (in particular in the sense of traversing) at least two, possibly at least four, side teeth.

Alternatively or additionally, the rear section can along inner sides of at least two, possibly at least four, side teeth and possibly further teeth, for example the respective Canine and / or at least one or at least two teeth adjoining the canine to the front. A further improvement in the accuracy of the position of the holding device can be achieved by means of these features.

In embodiments, the attachment can be adapted to the front and / or inner sides of all teeth. At least the (respective) rear support section can be adapted lingually and / or mesially to the gums and / or the teeth during use (or adapted when attached).

The holding element is arranged in particular on the front support section and / or is formed by this. In particular, the front support section and the holding element can be designed in one piece, in particular manufactured by means of 3D printing and / or milling technology.

The holding element can be configured to produce a plug connection and / or screw connection and / or latching connection and / or magnetic connection with the sensor device. To produce a plug connection, the holding element can, for example, have at least one male and / or at least one female plug connection structure.

The front support section preferably has a projection on the labial side, in particular with a plateau on which the front teeth of the upper jaw can strike. The teeth of the upper jaw and the lower jaw are decoupled from each other. The projection with the plateau is preferably designed as a separate molded part for temporary attachment to the para-occlusal attachment.

The above-mentioned object is also achieved in particular by a system which is used in particular to detect the jaw relation and / or occlusion and which, in addition to the para-occlusal attachment described above, includes the respective sensor device. For the stated purpose, this is in particular a position sensor device known per se as part of a likewise known position sensor system for measuring jaw movements.

In one or more of the embodiments described above, teeth of the lower jaw can be covered with a thin layer of a material of the sensor device holding device. If this is so thin that it does not impair the occlusion, this can also be referred to as a para-occlusal attachment.

In a further embodiment, a hardening material is preferably introduced between the lateral extensions and the support areas of the tooth fastening part and the teeth, which material is connected to the lateral extensions and the support bodies and is at least partially molded onto the surface of the teeth and the gums.

In further embodiments, the tooth fastening part comprises elongated lateral projections, with support bodies (support sections) extending mesially in the rear region, preferably (completely or partially) lingually back on the inside of the tooth towards the front teeth (during use).

Instead of or in addition to the attachments fastened with moldable fastening compound, molded parts can be used that are produced in particular with 3D printers and / or using milling technology.

In one embodiment, the lower jaw measuring sensor system (sensor device) can be permanently incorporated into the para-occlusal attachment.

In a preferred embodiment, the sensor holding part (holding element) can be detached from the tooth fastening part and joined together in a unique position.

First and second fastening means can have corresponding magnetic elements and / or male / female parts and / or locking elements.

The holding device can be used particularly advantageously when determining a neuromuscular jaw relation or a new bite, but also for performing jaw movements in which only the function of the temporomandibular joints is to be considered while eliminating the occlusion. The good hold of the para-occlusal attachment on the teeth through the design according to the invention is particularly evident here.

Further embodiments emerge from the subclaims.

• 1 eine perspektivische Ansicht eines paraokklusalen Attachments;
• 2 eine Ansicht des Attachments von oben;
• 3 eine alternative Ausführungsform des Attachments in einer schematischen Schrägansicht;
• 4 die Ausführungsform gemäß 3 in einer Draufsicht;
• 5 eine Ausführungsform mit einem Plateau in einer Ansicht von oben; und
• 6 die Ausführungsform gemäß 5 in einer Seitenansicht.

In the following, the invention is also described with regard to further features and advantages on the basis of exemplary embodiments, which are explained in more detail with the aid of figures. Here show:

• 1 a perspective view of a para-occlusal attachment;
• 2 a view of the attachment from above;
• 3 an alternative embodiment of the attachment in a schematic oblique view;
• 4th the embodiment according to 3 in a plan view;
• 5 an embodiment with a plateau in a view from above; and
• 6th the embodiment according to 5 in a side view.

In the following description, the same reference numerals are used for parts that are the same and have the same effect.

1 Figure 13 shows a perspective view of one embodiment of a para-occlusal attachment 10 including a section of a lower jaw UK.

The attachment 10 comprises a holding element 1 with a bow 2 , which can optionally be plugged in here via a corresponding lock with a front support section 3 the holding device 10 connected is. On the front elongated support section 3 are followed by elongated lateral extensions on both sides, each of which has a rear support section 5 define.

The respective rear support section 5 and the front support section 3 are mutually movable, according to the design via a sliding mechanism 4th can be moved against each other. This allows the position or length of the rear support section 5 to be changed. Alternatively or in addition to the sliding mechanism 4th can fix the respective rear support section 5 also take place via another connection option, such as a screw and / or latching connection.

The front and / or rear support section 3 , 5 can each have at least one opening and / or be formed from a resilient material.

In a back part 5a (or specifically a rear distal end) of the rear support section 5 is a support body extending substantially at right angles or running mesially 6th (Mesial section) attached. This can rest on the rear part of at least one tooth, possibly several teeth and / or the gums. The holding element 1 thereby obtains a largely exactly defined position with respect to the teeth or the alignment of a bite position.

An attachment to the teeth can be structured as follows: The attachment 10 is first adapted or bent to the lower jaw teeth, applied with an insertable fastening compound (e.g. based on plastic) and applied to the teeth and / or gums in the mouth.

2 shows a modification of the embodiment in a plan view. This corresponds to the embodiment according to 1 with the following differences. In addition to the in 1 The arrangement shown is a respective additional support body on the inside of the tooth 7th attached, which runs on the inside of the teeth towards the front teeth in use.

In further embodiments, based on the embodiments according to 1 respectively. 2 not shown in further detail, but in principle in the embodiment according to FIG 3 realized, these support bodies can be guided further forward towards the front teeth. In further embodiments, a further support part can be fastened to the inside of the front teeth via further sliding and / or fastening mechanisms arranged on both sides (lingually).

3 shows an attachment as a further embodiment 10 , which is designed as a one-piece molded part that can be produced, for example, using milling technology or 3D printing technology. The attachment 10 according to 3 can, if necessary, completely enclose the teeth (ie in particular be guided around the complete outside and / or the complete inside of all teeth or over at least 60% or at least 80% of the outside or inside). It is a holding element 1 as an integral part of the attachment 10 intended.

4th shows an arrangement in a plan view showing a support 9 on the lingual inside of the tooth. With the holding element 1 a motion measurement sensor system can be connected directly in defined positions, for example via a screw and / or latching element. But it can also have an additional intermediate part 8th be provided, to which the motion measurement sensor system (sensor device) can be attached, for example via a magnetic lock.

5 and 6th basically show the execution according to 3 and 4th with an additional body 11 that as a lead with a plateau 11a is designed and the holding element 12th includes. The plateau 11a is suitable for meeting the front teeth of the upper jaw, decouples the teeth of the upper jaw from the teeth of the lower jaw and prevents occlusion.

The lead 11 can with a base body of the attachment 10 be firmly connected. In a particular embodiment, this projection can be designed to be removable via a latching and / or other connection. This can be used to create a Realize comparatively universal application.

At this point it should be pointed out that all of the parts described above, seen on their own and in any combination, in particular the details shown in the drawings, are claimed to be essential to the invention. Changes to this are familiar to the person skilled in the art.

List of reference symbols

1; 12th

Retaining element

2

arc

3

front support section

4th

Sliding mechanism

5

rear support section

5a

first section

6th

Support body (second section)

7th

Support body

8th

Intermediate part

9

Support

10

Para-occlusal attachment

11

head Start

11a

plateau

13th

Sensor device

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• DE 10218435 A1 [0002]
• DE 10218435 B4 [0003]
• DE 102019106138 A1 [0005]
• DE 202017101547 U1 [0006]

Claims (12)

Para-occlusal attachment, comprehensive at least one holding element (1) for holding a sensor device, in particular for detecting the jaw relation and / or occlusion, on the teeth of the lower jaw (UK), a front support section (3), which is curved in the state of use, for supporting the attachment in a front labial area of the teeth and / or on an underlying gum area and one rear support section (5) each connected to the front support section for support in the area of the posterior teeth and / or the gum area behind them, wherein each rear support section is shaped in such a way that it runs at least in sections in the mesial direction over at least one rear posterior tooth and / or the gums lying behind it. Attachment after Claim 1 , wherein the respective rear support section (5) has a first, in particular elongated, subsection (5a) for resting on the corresponding labial surface and / or a second, curved and / or angled and / or flat, subsection (6), which extends in mesial Direction departing from the first section. Attachment after Claim 2 , wherein the second sub-section (6) is designed for section-wise support on an inner side of the corresponding side tooth or the corresponding side teeth and / or the gums lying behind. Attachment according to one of the preceding claims, wherein the respective rear support section (5) is shaped in such a way that it runs over at least two side teeth and / or along inner sides of at least two side teeth. Attachment according to one of the preceding claims, wherein the respective rear support section (5) is displaceably and / or flexibly attached to the front support section (3). Attachment to one of the Claims 1 until 4th wherein the rear support sections (5) are integrally molded with the front support section (3). Attachment according to one of the preceding claims, wherein the holding element (1) is formed on the front support section (3) and / or is configured to produce a plug connection (8) and / or screw connection and / or latching connection and / or magnetic connection with the sensor device . Attachment after Claim 7 , wherein the front support section (3) and the holding element (1) are formed in one piece, in particular are produced by means of 3D printing and / or milling technology. Attachment after Claim 7 , wherein the holding element (1) is configured to produce a plug connection (8) or screw connection or latching connection or magnetic connection with a sensor device designed as a position sensor device. Attachment according to one of the preceding claims, wherein the front support section (3) has a projection (11) on the labial side, in particular with a plateau (IIa), on which the front teeth of the upper jaw impinge in occlusion. Attachment according to one of the preceding claims, wherein the projection (11) or the plateau on the front support section (3) is designed as a separate molded part that can be placed on the front support section. Sensor holding system, in particular for detecting the jaw relation and / or occlusion, comprising the holding device (10) according to one of the preceding claims and a sensor device (13), in particular a position sensor device.

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