Patent Application
20220287806
The present inventive concept relates to a disposable dental articulator. More particularly, the present inventive concept relates to a disposable dental articulator, wherein maxillary and mandibular dental models of the articulator are easily and accurately aligned in accordance with a dental shape of a patient, thereby accurately manufacturing a denture that is precisely processed and provides comfortable fit on a patient's gum.
In general, articulators are used in dental clinics and dental laboratories. As described in Korean Patent No. 10-0417880 filed and registered by the applicant of the present inventive concept, in order to replace a missing tooth with an artificial tooth or make a dental prosthesis, a negative impression of a patient's teeth is made at a dental clinic and sent to a dental laboratory. In the dental laboratory, dental cement is injected into the impression to create a dental model. Depending on the number of teeth to be treated or involved in the prosthesis, dental models may be divided into a partial dental model for only a tooth to be treated, a unilateral dental model, and a bilateral dental model. According to relationship between teeth, a dental model for working teeth to be treated, or a dental model for antagonist teeth articulating with the working teeth may be manufactured.
When the dental models for the working teeth and antagonist teeth are manufactured, the relationship between teeth has to be determined in advance in order to manufacture a dental prosthesis and artificial teeth that mimic the dental occlusion and masticatory structure of the patient, and the structure of the maxilla and mandible of the patient has to be reproduced so that the optimal dental prosthesis and artificial teeth can be manufactured. A dental model articulator is a device designed to reproduce the structure of the maxilla and mandible conforming to the dental structure of the patient.
An example of the dental model articulator is disclosed in Korean Patent No. 10-0417880, entitled “Articulator for dental model”. The articulator A disclosed herein includes: a pair of base adapters 10 and 10′ each of which includes a body frame 15 configured such that a dental model is coupled to an upper surface thereof and a spherical control ball 16 protrudes from an outer end thereof, a plurality of locking pin fitting holes 14 formed at a regular interval in the center of the upper surface of the body frame 15, and character and reference teeth display parts 19′ and 19 provided at one side of the upper surfaces of the body frame 15 so as to easily determine a coupling position of the respective dental models when the dental models are separated and coupled; and a pair of connectors 20 and 21 made of a quadrangular channel-shaped plastic elastic material, and configured such that respective first ends thereof are coupled to the respective spherical control balls 16 of the base adapters 10 and 10′ and respective second ends thereof are hinged so as to be separated from each other by a pair of locking pieces 22 and one fitting piece 24. Here, pluralities of pyramids 12 and 13 are respectively provided at opposite sides of the locking pin fitting holes 14 formed in the body frame 15, the pyramids continuously protruding at a predetermined height to be inserted into the dental models coupled to the base adapters 10 and 10; each of the locking pin fitting holes 14 has a tapered shape of which the inner diameter gradually decreases from top to bottom; hemispherical housings 26 and 26′ are respectively provided at the connectors 20 and 21 in the width direction of the connectors 20 and 21 coupled to the spherical control balls 16, each of the housings having a cut upper end so that the spherical control balls 16 are fitted to the housings 26 and 26′ to be movable therein up, down, left, right, and laterally; and a plurality of glue injection slits 27 for fixing the fitted spherical control balls 16 are formed at one side of each of the housings 26 and 26′.
Another example of the dental model articulator is disclosed in Korean Utility Model Registration No. 20-0313638, entitled “Dental-technical bite instrument”. The instrument disclosed herein includes: an arm 18 having an end rotatably installed at a column 14 standing from an end of a base 12; and upper and lower locking means 40 and 30 provided respectively at the arm 18 and the base 12, and including grippers 33, 36, 43, and 46 operated by associated locking screws 38 and 48 to fix respectively upper and lower mouth models T1 and T2. Here, a metal storage chamber 41a open upward is formed on an upper surface of a gripper support plate 41 of the upper locking means 40; the metal storage chamber 41a is provided with a low-melting-point alloy 42 melted to a predetermined height and solidified; and the gripper support plate 41 has a first end fused to the low-melting-point alloy 42 to be fixed to the metal storage chamber 41a, and a second end connected to the arm 18 via a connecting bar 20 fixed by a fastening means to a distal end of the arm 18.
However, the articulators according to the related art have disadvantages in that it may be difficult to accurately manufacture a denture and to precisely process the denture and the manufactured denture may not fit comfortably on the patient's gum because maxillary and mandibular dental models are often misaligned when aligned in accordance with a dental shape and manipulation thereof is difficult.
The foregoing is intended merely to aid in the understanding of the background of the present inventive concept and is not intended to mean that the present inventive concept falls within the purview of the related art that is already known to those skilled in the art.
Accordingly, the present inventive concept has been made keeping in mind the above problems occurring in the related art and an objective of the present inventive concept is to provide a disposable dental articulator, wherein maxillary and mandibular dental models of the articulator are easily and accurately aligned in accordance with a dental shape of a patient, thereby accurately manufacturing a denture that is precisely processed and provides comfortable fit on a patient's gum.
In order to achieve the above objective, according to one aspect of the present inventive concept, there is provided a disposable dental articulator, including: a body; and a first socket coupled to the body and a first fixing portion one side of which is slidably coupled to the first socket and the other side of which is configured to be coupled to one of a maxillary dental model and a mandibular dental model.
The first body may include a first horizontal portion extending along a first direction, a first left leg and a first right leg connected to distal ends of the first horizontal portions and extending along a second direction substantially perpendicular to the first direction, and a first ball connected to a center of the first horizontal portion of the first body and extending along the second direction opposite to a direction the first left leg and the first right leg extend.
The first body may further include a left slit formed at an end of the left leg, a left hinge horizontally crossing the left slit along the first direction, and a right slit formed at an end of the right leg.
The first ball may include a groove disposed along a circumference of the first ball along a third direction perpendicular to a plane formed by the first direction and the second direction.
The first ball may include a groove disposed along a circumference of the first ball along a third direction perpendicular to a plane formed by the first direction and the second direction.
The first socket may further include a socket groove formed along a circumference of the concave portion of the first socket along the third direction in a region opposing the groove disposed along the circumference of the first ball thereby forming a glue passage which allows glue to be injected thereinto to firmly adhere the first ball to the concave portion of the first socket.
The disposable dental articulator may further include a second body, a second socket coupled to the second body, and a second fixing portion one side of which is slidably coupled to the second socket and the other side of which is configured to be coupled to the other of a maxillary dental model and a mandibular dental model.
The second body may include a second horizontal portion extending along the first direction, a second left leg and a second right leg connected to distal ends of the second horizontal portions and extending along the second direction substantially perpendicular to the first direction, and a second ball connected to a center of the second horizontal portion of the second body and extending along the second direction opposite to a direction the second left leg and the second right leg extend.
The second body may further include a left slit formed at an end of the left leg, a right slit formed at an end of the right leg, and a right hinge horizontally crossing the right slit along the first direction.
The second socket may include a concave portion to which the second ball is coupled.
The second socket may further include a socket groove formed along a circumference of the concave portion of the second socket along the third direction in a region opposing the groove disposed along the circumference of the second ball thereby forming a glue passage which allows glue to be injected thereinto to firmly adhere the second ball to the concave portion of the second socket.
The left hinge of the first body may be movably coupled to the left slit of the second body and the right hinge of the second body may be movably coupled to the right slit of the first body.
Therefore, the present inventive concept provides a remarkable effect in that the maxillary and mandibular dental models of the articulator can be easily and accurately aligned in accordance with a dental shape of the patient, thereby accurately manufacturing a denture that can be precisely processed and can provide comfortable fit on the patient's gum.
The above and other objectives, features, and other advantages of the present inventive concept will be more clearly understood from the following detailed description when taken in conjunction with the accompanying drawings, in which:
Hereinbelow, an exemplary embodiment of the present inventive concept will be described in detail with reference to the accompanying drawings. Throughout the drawings, the same reference numerals will refer to the same or like parts.
The present inventive concept relates to a disposable dental articulator.
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The left leg 111 of the lower body 110 and the left leg 121 of the lower body 120 is coupled to each other, and the right leg 112 of the upper body 110 and the right leg 122 of the lower body 120 is coupled to each other.
Each of the left leg 111 of the upper body 110 and the right leg 122 of the lower body 120 may have an inclined surface 1 which is slanted from front to rear to serve as a stopper to stop rotation when the upper body 110 and the lower body 120 is movably combined.
Further, the left hinge 116 of the upper body 110 and the right hinge 126 of the lower body 120 may have a trapezoidal cross-section in which each of a diameter of the left hinge 116 of the upper body 110 and the right hinge 126 of the lower body 120 gradually increases toward outside.
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Further, the upper and lower bodies 110 and 120 may be disposed on the same plane when opened.
Further, a ball groove 2 may be formed along the circumference of each of the upper and lower balls 114 and 124 in the up-down direction.
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Further, each of the upper socket 210 and the lower socket 220 may include the concave portion 210 to which each of the upper ball 114 and the lower ball 124 is coupled. The fixing portion 220 may be coupled to a lower portion of the socket 200 so that each of the maxillary dental model 400 and the mandibular dental model 500 is coupled to the fixing portion 220.
The fixing portion 220 may have a rectangular plate shape.
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Further, the concave portion 210 may be configured such that a ridge and a valley are alternately repeatedly formed along the outer periphery of a concave recess 212.
Therefore, the present inventive concept provides a remarkable effect in that the maxillary and mandibular dental models of the articulator can be easily and accurately aligned in accordance with a dental shape of a patient, thereby accurately manufacturing a denture that can be precisely processed and can provide comfortable fit on a patient's gum.
Although a preferred embodiment of the present inventive concept has been described for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the inventive concept as disclosed in the accompanying claims.
