JP2008035952A - Check-bite method of denture and occlusion material used therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an accurate and reproducible check-bite method. <P>SOLUTION: Occlusion chips 1 made of resin or the like are attached to cover artificial tooth faces of left/right molars of an upper jaw denture 2a. The upper/lower jaw dentures are mounted in the oral cavity of a patient, the thickness of the chips are adjusted so that the artificial teeth 3b facing the left/right chips uniformly abut thereon respectively and then, a recording material 7 is injected into a clearance between the upper/lower jaw dentures with their occluded with each other, and is hardened to record the lower jaw position. The upper/lower jaw dentures are taken out from the oral cavity, occluded and fixed in the recorded state, and remounted on an occlusion device with their occluded with each other. Then, the chips 1 are removed therefrom, and the occlusion state of the artificial teeth is checked and adjusted. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a check bite method for recording a correct occlusal position and an occlusion material used therefor in order to check and adjust the occlusal relationship of a denture.

  When checking and correcting the occlusal relationship of the denture, a correct bite position is recorded by performing a check bite, and the occlusion is corrected by re-attaching the denture to the articulator based on the record.

  The conventional check bite is a strip of a soft material such as thermoplastic paraffin wax, pressed against the occlusal surface of the lower denture, and then pressed with a heated trowel (spatula) to make the entire material even To soften. Thus, the denture is mounted in the oral cavity, the upper and lower jaws are bitten, and the opposing relationship of the upper and lower jaw artificial teeth is recorded as indentations on the upper and lower surfaces of the wax. The upper and lower jaw dentures are reattached to the articulator with the check bit (wax remaining on the bite) in between, and the occlusal displacement is corrected by grinding or rearranging the artificial teeth.

  In such a check bite, it is necessary to stop the bite immediately before the upper and lower artificial teeth come into contact with each other. However, because the patient bites too deeply, there is a hole in the wax, the upper teeth and the lower teeth are in direct contact with each other, and a portion of the denture base is lifted from the ridge or shifted to the front, back, left and right. Often no record is available. In addition, it is necessary to heat and soften the bite wax evenly to the inside before occlusion, but since the softening is not uniform, the hard part may become a fulcrum and the denture may be displaced in the middle of closing. In addition, patients who need dentures have a loss of periodontal sensation, and are usually significantly inferior to the sense of touch and pressure compared to natural dentitions. It may be difficult to detect.

  For this reason, the conventional check bite has low reproducibility, the correction of the occlusion of the denture after remounting tends to be inaccurate, and the mounted denture is likely to have a rattle or pain.

  An object of the present invention is to provide a method for obtaining an accurate and reproducible check bite by using a material instead of wax.

  The check bite method of the present invention attaches the upper and lower jaw dentures to the left and right molar prosthetic surfaces so that they are covered with a hard occlusion tip made of resin or the like, and attaches the upper and lower jaw dentures to the patient's oral cavity for occlusion The thickness of the artificial teeth facing the left and right tips is adjusted so that they are evenly contacted, and a recording material is injected into the gap between the upper and lower jaw dentures in an engaged state and hardened to record the lower jaw position (Claim 1). ).

  That is, in the present invention, a hard chip made of resin or the like is used instead of the wax softened by heating. This is attached so as to cover the artificial tooth surface of the left and right molar parts of the upper or lower denture, the denture is mounted in the mouth and bitten, and the thickness thereof is adjusted so that the artificial teeth facing the left and right chips are in contact with each other.

  Since the tip is hard made of resin or the like in this way, when the opposing artificial tooth cusp hits the tip, the tactile sensation is obtained as if the teeth hit the teeth, and the left and right tips are evenly distributed The patient can easily feel the feeling of touching while tapping, and since there is no occlusion of the front tooth part, habitual biased bites, etc. are removed, so check at the optimal lower jaw position There is an effect that a byte can be performed.

  In addition, when the tip bites with the opposing artificial tooth, the artificial tooth facing surface of the tip is preferably substantially flat so that the tip does not slip each other, and is rough, that is, rough enough to prevent slipping. (Claim 2).

  The occlusal tip may be attached to the upper jaw or the lower jaw, but when attached to the lower jaw, the tip tends to interfere with the tongue and become unstable, so it is preferable to attach it to the upper jaw.

  The tip is sized to cover the buccal and lingual cusps of the molar artificial teeth. The smaller the thickness of the tip, the narrower the gap between the upper and lower jaw dentures at the time of occlusion, and the check bite becomes possible in a state close to the original central occlusal position. However, if the occlusal relationship is large, if a thin tip is used, artificial teeth will interfere with each other outside the tip, so you can choose from a thick one to a thin one with an appropriate thickness. It is preferable to do so.

  When the thickness adjustment of the occlusal tip is completed, a recording material is injected into the gap between the upper and lower jaw dentures and cured to record the lower jaw position. The upper and lower jaw dentures removed from the mouth are occluded in the state recorded on the chip and reattached to the articulator. After that, the tip and the recording material are removed, the occlusal state of the artificial tooth is checked, and the occlusion is adjusted.

  After the occlusal tip described above is attached to the denture, it is necessary to adjust the occlusion so as to make contact with the opposing artificial teeth evenly, and this adjustment work takes a lot of labor. Further, it is difficult to position the chip at the time of mounting, and it takes time to mount and remove the chip from the artificial tooth using a resin or the like. Therefore, the present invention also provides a simple method as described below. That is, it attaches so that a cushion piece may be covered on the left and right molar part artificial tooth surface of an upper jaw or a lower jaw denture. The upper and lower jaw dentures are mounted in the oral cavity of the patient and the cushion piece is bitten, and in the bitten state, the recording material is injected and cured in the gap between the upper and lower jaw dentures to record the lower jaw position (claims). 4). Since the cushion piece has elasticity, the patient can bite it while tapping, and if the occlusal relationship between the upper and lower jaw dentures is recorded while being bitten, the patient's original center fitting position can be recorded. . Remove the upper and lower jaw dentures from the oral cavity, remove the cushion pieces, and reattach them to the articulator. Thus, the occlusal state is checked and the occlusion is adjusted.

  According to this method, since there is no need to adjust the tip and bite, there is an advantage that the check bite can be performed in a short time. This method is slightly inferior in accuracy to the check byte compared to the method using the chip, but is more accurate than the method using the conventional paraffin wax.

  The cushion piece is preferably made of cotton, for example, absorbent cotton, because it has an appropriate elasticity and is difficult to slip. Chemical fibers such as polyethylene are slippery and have water repellency, so they do not fit well in moist mouths. Further, if the cushion piece is made spherical, if the occlusal deviation of the upper and lower jaw dentures is large, it is easy to escape when engaged. Therefore, it is preferable to form the absorbent cotton by rolling it in a roll shape and crushing it without making it spherical. If you put a double-sided adhesive tape on the cushion piece in advance and peel off the surface protection seal and attach it to the artificial tooth surface, installation will not take much time.

  In addition, although the wax denture used as the prototype is usually made in the process of manufacturing the denture, the check bite method according to the present invention can also be used for checking and adjusting the occlusal relationship of the wax denture.

  An embodiment of the present invention will be described with reference to the drawings.

  As shown in FIGS. 1 and 2, the occlusal tip 1 is formed in a disc shape with a hard material such as resin, and is attached so as to cover the vicinity of the left and right second premolar teeth 3a of the maxillary denture 2a. Several tips with a thickness of about 0.5 to 3 mm are prepared, and one with an appropriate thickness is selected according to whether the bite is good or bad.

  The chip 1 is attached by applying a resin or an adhesive 4 on one side. If a photopolymerization resin is used, it can be fixed by being irradiated with light after positioning, and the workability is good.

  The upper denture 2a to which the chip 1 is attached is mounted in the patient's oral cavity together with the lower denture 2b (FIG. 3). First, it is lightly occluded and it is confirmed that the artificial teeth are not in contact with each other except the tip 1. When the artificial teeth come into contact with each other, change to a thicker tip. Then, the recording surface (lower surface) of the chip is adjusted by adjusting so that both the left and right chips 1 are in contact with the opposing artificial teeth 3b evenly. The cut portion in FIG. Instead of grinding, it is also possible to adjust the left and right balance by adding a resin to the chip on the opposite side.

  Next, a tapping motion is performed by sandwiching an occlusion paper (not shown; similar to copying carbon paper) between the tip 1 and the artificial tooth 3b, and the occlusal adjustment of the early contact portion and the interference portion of the tip is carefully performed. When the occlusal position is correct, check that the marking points recorded on the surface of the chip through the occlusal paper converge to one point, and that the occlusal sound at this time can be clearly heard as a single click sound .

  When an appropriate mandibular position is obtained in this way, as shown in FIG. 4, the recording material 7 such as a silicone impression material for obtaining an occlusion or a quick hardening for impression is laterally inserted into the gap between the upper and lower jaw dentures while being in an occluded state. Gypsum (xanthano) is injected and cured, and the mandibular position is recorded securely. In the figure, reference numeral 8 denotes a cartridge type silicone impression material injector. Three points, the left and right molar parts and the front tooth part, are sufficient as the places where the recording material 7 is injected.

  In this way, the upper and lower jaw dentures 2a and 2b are taken out of the oral cavity, occluded in the state recorded in the oral cavity, and reattached to the articulator (FIG. 5). Then, the chip | tip 1 which has adhere | attached is removed, the occlusion state of an artificial tooth is checked, and occlusion adjustment is performed. The occlusal adjustment is performed by shaving the portion of the artificial tooth that is in contact with the piece. When the occlusal deviation is so large that it cannot be adjusted only by partial cutting, the artificial teeth are removed and rearrangement is performed.

  In this embodiment, a cushion piece 10 as shown in FIGS. 6 and 7 is attached to the upper denture 2a in place of the occlusal tip 1 described above. The attachment position is the vicinity of the left and right second premolars 3a as in the case of the first embodiment. The cushion piece 10 is a lump of absorbent cotton and is formed like a cushion or a pillow.

  The cushion piece is made so hard that the patient can feel the bite of the object while tapping. The thickness may be about 7-10mm, but prepare several types with different hardness. When the bite is bitten, the degree of crushing of the cushion piece differs depending on the hardness, so select and use an appropriate one according to whether the bite is good or bad.

  A double-sided adhesive tape 11 is stretched on one surface of the cushion piece, and the protective seal 12 covering the adhesive surface is peeled off and attached to the artificial tooth surface of the denture.

  The maxillary denture 2a attached with the cushion piece is mounted in the patient's oral cavity together with the mandibular denture 2b (FIG. 8). Next, as shown in the left half of FIG. 8, the patient bites the cushion piece 10. At this time, it is confirmed that the artificial teeth are not in contact interference other than the cushion piece. When contacting artificial teeth, replace them with harder ones.

  Thus, when it is confirmed that an appropriate lower jaw position can be obtained without contact interference between artificial teeth, the recording material 7 such as an occlusal acquisition silicone is inserted into the gap between the artificial teeth of the upper and lower jaws while the cushion piece is being bitten. Impression material or fast-setting gypsum for impression (xantano) is injected from the side and cured, and the occlusal position is recorded securely.

  Next, the upper and lower jaw dentures 2a and 2b are taken out of the oral cavity, and after the cushion piece 10 is removed, it is reattached to the articulator 6 as shown in FIG. Thereafter, the recording material 7 is removed, and the occlusal adjustment is performed as in the case of the first embodiment.

It is a side view of the maxillary denture of Example 1. It is a bottom view of a maxillary denture similarly. Similarly it is sectional drawing at the time of occlusion of the upper and lower jaw dentures. It is a side view of the upper and lower jaw dentures in a state where the lower jaw position is recorded with a recording material. The state which attached the upper and lower jaw dentures to the articulator is shown. It is a side view of the maxillary denture of Example 2. It is a bottom view of a maxillary denture similarly. Similarly it is sectional drawing at the time of occlusion of the upper and lower jaw dentures.

Explanation of symbols

1 Occlusal Tip 2a Maxillary Denture 2b Mandibular Denture 3 Artificial Teeth 7 Recording Material 10 Occlusal Cushion Piece 11 Adhesive Tape

Claims (6)

  Attach the upper or lower mandibular prosthesis to the artificial tooth surface of the left and right molars with a hard occlusal tip made of resin, etc. Adjusting the thickness of the tip so that the artificial teeth contact each other evenly, and injecting the recording material into the gap between the upper and lower jaw dentures and curing them to record the lower jaw position. Law.   The check bite method according to claim 1, wherein a surface of the occlusal tip that contacts the opposing artificial teeth is formed in a rough substantially flat surface.   An occlusal tip for a check bite, which is attached so as to cover the left and right molar artificial teeth of the maxilla or mandibular denture, and whose thickness is adjusted so that the opposing artificial teeth are evenly in contact with each other.   Attach the occlusal cushion piece to the left or right molar prosthetic surface of the maxilla or mandibular denture, attach this upper and lower jaw denture in the patient's oral cavity, and bite the cushion piece. A check bite method for dentures, in which a recording material is injected into a gap between the teeth and cured to record the occlusal position.   The check bite method according to claim 4, wherein the cushion piece is made of cotton.   An occlusal cushion piece for a check bite of a denture made of cotton and affixed to an artificial tooth surface of a left or right molar part of an upper or lower denture through an adhesive tape.

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