RU187360U1 - PRINTED PERFORATED SPOON FOR LOWER JAW - Google Patents

Abstract

The invention relates to medicine, in particular dentistry, and can be used to obtain impressions of the lower dentition. The objective of the utility model is to reduce the time and simplify the workflow for obtaining impressions of the palatine and occlusal surfaces of the lower dentition for the manufacture of jaw models. The technical result is the exclusion of the appearance of the image on the imprint of the vestibular surfaces of the teeth; the exclusion of foci of multiple adhesion of the impression material to the structural elements of the bracket system. This is achieved by the fact that the standard imprinted perforated spoon for the lower jaw is a tray with a handle, with a recess for the tongue, at the base of which through holes are made. The height of the bead section corresponding to the vestibular part of the dentition is 3.5 mm, the bead section, the corresponding area of canines and premolars is 4 mm, the height of the bead section corresponding to the lateral part of the dentition is 3.5 mm.

Description

The invention relates to medicine, in particular dentistry, and can be used to obtain impressions of the lower dentition, namely lingual and occlusal surfaces of the teeth at the stage of completion of orthodontic treatment, for the manufacture of a retention apparatus by the laboratory method, located on the lingual side of the dentition, and for the manufacture of occlusal composite patches for chewing teeth at the stage of orthodontic treatment of patients with temporomandibular joint dysfunction (TMJ).

The use of a perforated impression tray for the lower jaw is necessary to obtain impressions, followed by the implementation of plaster models of the jaws, with which the doctor can diagnose and plan treatment. Plaster models of the jaws are also used for the manufacture of intra- and extraoral diagnostic and treatment devices, indirect fixation of the braces of the system, the manufacture of retention devices and occlusal composite pads by the laboratory method.

The impression is the reverse (negative) display of the surface of hard and soft tissues located on the prosthetic bed and its borders. (NN Abolmasova, A.I. Nikolaeva., Propaedeutics of dental diseases: a textbook for university students / - M.: MEDpress-inform, 2015. - 784 p.). To obtain an impression, you must have a special impression material and a tool with which the doctor will receive a negative image of the area necessary for him.

Impression is impossible without the use of a tool that would repeat the shape of the dentition and had an internal space for the location of organs and tissues to be displayed. Such a tool is an impression spoon.

Impression spoons are divided into two large groups: standard and individual.

Standard spoons are factory-made from stainless steel, duralumin or plastic. Metal spoons can be solid and with perforations for mechanical fixation of impression material in a spoon. They are convenient to use, store, and are also subject to sterilization by autoclaving.

Plastic analogues are available both for single use and for reusable use from heat-resistant plastic.

All spoons have a different size, shape and height of the sides. The more varied the choice of spoons, the greater the possibilities a doctor has for obtaining an impression.

The shape and size of the impression tray are determined by the shape of the jaw, the width and length of the dentition, the topography of the problem area, the height of the tooth crowns, the severity of the toothless alveolar part and other conditions. These conditions are reflected in the production of impression spoons.

One of the first manufacturers of standard metal impression trays is Zhermack, which produces spoons in the main five sizes, which today have become the “base” for selecting an impression tray.

As a prototype for the closest technical nature, we have chosen an impression perforated spoon for the lower jaw, which is a tray with a handle, with a recess for the tongue, in the base of which there are through holes. [Trezubov V.N. et al., Encyclopedia of Orthopedic Dentistry, TOLIANT, St. Petersburg, 2007, p. 27 I].

The main disadvantage of both the aforementioned analogue, that is, the standard metal impression tray for the lower jaw, manufactured by Zhermack, and the prototype, are relatively high portions of the bead of the above spoons. Unfortunately, the prototype does not indicate the specific height sizes of the sides of the spoons. According to the illustrative material of the prototype, we can conclude that the height of the sides of the spoons is large enough to be able to display only lingual and occlusal surfaces of the lower dentition.

The high sides cause the vestibular surface of the teeth to be displayed on the impression when the impression of the lower jaw is taken, which is unnecessary, since the doctor needs to receive impressions for the manufacture of the retention apparatus on the lingual surface of the front teeth using the laboratory method, as well as for the manufacture of occlusal lining on the chewing group of teeth only display lingual and occlusal surfaces of the lower dentition.

High parts of the sides of the prototype also make it difficult to obtain impressions of the dentition of the lower jaw in patients undergoing orthodontic treatment using bracket systems located on the vestibular surfaces of the teeth. This is caused by overlapping of the vestibular surfaces of the teeth with impression material. Vestibular bracket systems are an undesirable retention point, and, in this regard, create conditions for multiple adhesion of the impression material to the structural elements of bracket systems. In order to prevent multiple adhesion of the impression material to the structural elements of the bracket systems, before the impression of the dentition, the bracket system is isolated with base wax, which accordingly increases the time and complicates the process of removing impressions in this category of patients.

The objective of the utility model is to reduce the time and simplify the process of obtaining impressions of the lingual and occlusal surfaces of the lower dentition for the manufacture of models of the jaws used in the manufacture of a retention apparatus on the lingual surface of the lower dentition in a laboratory way, as well as for the manufacture of occlusal patches in patients on orthodontic treatment using vestibular braces.

The technical result achieved using the claimed utility model is:

- the exclusion of the appearance on the impression of the vestibular surfaces of the teeth when receiving the impression of the lower dentition for the manufacture of jaw models used in the manufacture of the retention apparatus on the lingual surface of the dentition by the laboratory method, as well as for the manufacture of occlusal lining in patients undergoing orthodontic treatment using vestibular braces -systems;

- the exclusion of foci of multiple adhesion of the impression material to the structural elements of the bracket system;

The technical result of the claimed utility model is achieved in that the impression perforated spoon for the lower jaw is a tray with a handle, with a recess for the tongue, at the base of which are made through holes. The height of the bead section corresponding to the vestibular part of the dentition is 3.5 mm, the bead section, the corresponding area of canines and premolars is 4 mm, the height of the bead section corresponding to the lateral part of the dentition is 3.5 mm.

Distinctive essential features and a causal relationship between them and the achieved result:

- The height of the bead section corresponding to the vestibular part of the dentition is 3.5 mm, the bead section, the corresponding area of canines and premolars is 4 mm, the height of the bead section corresponding to the lateral part of the dentition is 3.5 mm.

Most often, the bracket system is fixed on the lower dentition to a predetermined standard height (Tab. 1) ± 0.5 mm. On this basis, when receiving an impression of the lower dentition in patients undergoing orthodontic treatment using vestibular braces, the sides of the impression tray should not overlap the height of the structural elements of the braces by more than 1/3 of their standard height. A large height of overlap may be the reason for the occurrence of foci of multiple adhesion of the impression material to the structural elements of the bracket system.

The height of the sides of the claimed utility model when removing impressions of the lower dentition does not overlap the height of the structural elements of the bracket system by more than 1/3 of their standard height, which eliminates the adhesion of the impression material to the structural elements of the bracket system and, accordingly, the need to isolate it with base wax before receiving a print.

The height of the sides of the claimed utility model will also allow avoiding the doctor to display to the doctor the impression that when receiving impressions for the manufacture of the retention apparatus on the lingual surface of the front teeth using the laboratory method, as well as for the manufacture of occlusal lining on the chewing group of teeth, the doctor it is necessary to obtain a display of only lingual and occlusal surfaces of the lower dentition.

The set of essential distinguishing features is new and excludes:

- the appearance of the imprint on the imprint of the vestibular surfaces of the teeth upon receipt of the impression of the lower dentition for the manufacture of jaw models used in the manufacture of a retention apparatus on the lingual surface of the dentition by the laboratory method, as well as for the manufacture of occlusal lining in patients undergoing orthodontic treatment using vestibular braces; systems;

- the occurrence of foci of multiple adhesion of the impression material to the structural elements of the bracket system, which

reduces time and simplifies the process of obtaining impressions of the lingual and occlusal surfaces of the lower dentition for the manufacture of jaw models used in the manufacture of a retention apparatus on the lingual surface of the lower dentition in a laboratory way, as well as for the manufacture of occlusal patches in patients undergoing orthodontic treatment using vestibular bracket systems.

The essence of the utility model is illustrated in FIG. 1, which shows a General view of the claimed utility model, and FIG. 2, (front view), FIG. 3 (side view) and FIG. 4 (top view) - when placing it in the patient's oral cavity: where:

1. - a spoon;

2. - spoon handle;

3. - side;

4. - notch for the tongue;

5. - perforated holes.

The proposed utility model can be used as follows:

During clinical admission, directly in the patient’s oral cavity, an impression perforated spoon is placed for the lower jaw, while the doctor holds the spoon (1) by the handle (2) with his working hand and places it in the patient’s oral cavity, pressing it to the lower dentition. Then the doctor removes the spoon (1) from the oral cavity and puts impression material in the spoon (1), evenly distributes it over its entire surface, making sure that the amount of impression material does not exceed the height of the sides (3) of the spoon (1). Next, the doctor brings a spoon (1) with impression material into the patient’s oral cavity and presses it firmly to the lower dentition with a front-to-back movement, while asking the patient to raise his tongue to the sky, controlling its location in the tongue recess (4). Excess material is released through perforated holes (5) made in a spoon (1). During the hardening of the impression material, the doctor holds the spoon (1) by the handle (2) with the thumb and forefinger of the working hand, and holds the spoon (1) in the originally set position with the middle and ring fingers. After making sure that the impression material has hardened and focusing on the excess left through the perforated holes (5) made in the spoon (1), the doctor, holding the handle (2) of the spoon (1), with his working hand takes the spoon (1) out of the oral cavity. Carries out an assessment of a print.

Clinical example:

Patient A., 44 years old, was treated at the Romanovsky Medical Center with a diagnosis of a close position of the front lower teeth, rotation of the teeth - 4.5, 3.4, narrowing of the upper and lower dentitions. Objectively: class 1 on molars and fangs on the right and left sides according to Engle's classification, the center line of the upper dentition corresponds to the center line of the face, the center line of the lower dentition corresponds to the center line of the face, the close position of the front lower teeth, tooth rotation is 4.5, 3.4 . On TRG: an increase in the incisal angle, an increase in the inclination of the upper incisors to the base of the skull. Based on diagnostic data, it was decided to treat with a fixed orthodontic apparatus, namely the ZM vestibular bracket system, using a straight arc technique without removing individual teeth, with separation in the region of the front lower teeth. Treatment was started in January 2015. In March 2016, it was decided to remove the bracket system due to normalization of the width of the dentition, elimination of crowding, normalization of the inclination of the front teeth and obtaining dense fissure-tubercular contacts corresponding to Grade 1 according to Engle's classification in the sagittal direction. As a retention apparatus, a retention apparatus was selected on the lingual surface of the central incisors and canines of the lower jaw, made of woven steel arc "Respond", with a diameter of 0.019 inches. Using the claimed utility model, an impression of the lower dentition was obtained.

Due to the fact that the sides of the claimed utility model when removing impressions of the lower dentition did not overlap the height of the structural elements of the bracket system by more than 1/3 of their standard height, adhesion of the impression material to the structural elements of the bracket system was not observed, and, accordingly, did not the bracket system was required to be insulated with base wax before the impression was made, in contrast to the prototype, which reduced the time and simplified the process of obtaining impressions of the lingual and occlusal surfaces of the teeth of the lower dental of the series.

A working model was cast and a laboratory method was used to produce a retention apparatus on the lingual surface of the incisors and canines of the lower jaw, which was installed in the oral cavity by indirect fixation. After 2 years, the long-term result was rated as good.

The inventive utility model is made of plastic material. It can also be made of metal.

Thus, the claimed impression perforated spoon for the lower jaw has a novelty and excludes:

- the appearance of the imprint on the imprint of the vestibular surfaces of the teeth upon receipt of the impression of the lower dentition for the manufacture of jaw models used in the manufacture of a retention apparatus on the lingual surface of the dentition by the laboratory method, as well as for the manufacture of occlusal lining in patients undergoing orthodontic treatment using vestibular braces; systems;

- the occurrence of foci of multiple adhesion of the impression material to the structural elements of the bracket system,

which reduces time and simplifies the process of obtaining impressions of the lingual and occlusal surfaces of the lower dentition for the manufacture of jaw models used in the manufacture of a retention apparatus on the lingual surface of the lower dentition in a laboratory way, as well as for the manufacture of occlusal patches in patients undergoing orthodontic treatment with using vestibular bracket systems.

Claims (1)

An imprinted perforated spoon for the lower jaw, which is a tray with a handle with a recess for the tongue, at the base of which there are through holes, characterized in that the height of the bead section corresponding to the vestibular section of the lower dentition is 3.5 mm, the bead section corresponding to the area canines and premolars - 4 mm, the height of the bead section corresponding to the lateral part of the dentition - 3.5 mm.

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