RU2208416C1 - Detachable orthodontic apparatus - Google Patents

Abstract

FIELD: medicine, stomatology. SUBSTANCE: the present innovation is represented by foundation made of rigid plastic with longitudinal cutting, mechanic widening screw and two clamps. Along the edges of rigid foundation, elastic plastic is observed being adjacent to transmit pressure power to oral dental surface and mucosal part of alveolar crest's incline. Elastic plastic isolates soft and solid dental tissues against rigid plastic. EFFECT: higher efficiency in orthodontic treating teeth and dental arches. 1 dwg

Description

 The invention relates to medicine, namely to dentistry. Known apparatus Buni containing a spring (Coffin spring), which is an active part of the apparatus. This device is designed to expand the upper jaw ("Guide to Orthodontics" / Ed. By Khoroshilkina F.Ya. M .: Medicine. 1999. Pp. 503-504).

 The disadvantage of the Buni apparatus is the hard and uneven pressure on the teeth and soft tissues at individual points of contact, which leads to injuries of the oral mucosa and intoxication of tooth enamel.

 Kingsley apparatuses are also known that have either a mechanical expansion screw or a Coffin spring as the active part, the action of which is aimed at expanding the upper jaw ("Guide to Orthodontics" / Edited by F. Khoroshilkina M .: Medicine. 1999. Pages. 452).

 Kingsley apparatuses have the same disadvantages as the Buni apparatus. In addition, the Kingsley apparatus, containing a mechanical expansion screw, exhibits immediate aggression against bone tissue, which leads to injury to the latter.

 Closest to the claimed is a removable orthodontic appliance that extends the upper jaw, the basis of which consists of rigid plastic with a screw enclosing a damping spring (Horoshilkina F. Ya., Persin L.S. "Orthodontics. Treatment of dentofacial anomalies with modern orthodontic appliances . Clinical and technical stages of their manufacture. Book I ". M., LLC" Ortodent-Info ", 1999. P.192).

 Its disadvantage is the rigid and unevenly distributed pressure on the teeth and the mucous membrane of the oral cavity at individual points of contact, leading to injuries and toxic effects on tooth enamel.

 The technical result of the proposed device is to increase the effectiveness of orthodontic treatment of teeth and dental arches.

 The technical result is achieved by the fact that in addition to the edges of the hard base of the apparatus in the area of its contact with the teeth and the mucous membrane of the slope of the alveolar ridge, there is elastic plastic (for example, PM-01, Novus-TM, Molloplast-V, Ortosil, Eledent-100) with a thickness of 1 to 4 mm, which provides full planar contact in places of application of force, isolates soft and hard tooth tissues from hard plastic and, having a reserve force inherent in elastic materials, increases the time of exposure to bone structures of the toothbrush tnoj system.

 In the proposed apparatus, flexible high-temperature polymerization plastics are used - these are polyvinyl chloride or based on vinyl chloride with butyl acrylate, silicone or siloxane, as well as acrylic.

 From acrylic plastics, you can use the elentent-100-plasticized copolymer of acrylic monomers (methacrylate with methyl methacrylate) (Zholudev S.E. "Plastics used in prosthetic dentistry". Yekaterinburg, 1999, pp. 66-67; Trezubov V.N., Shteyngart M.Z., Mishnev L.M. "Orthopedic dentistry: Applied materials science." Textbook for medical schools. St. Petersburg "SpecList", 1999, 2001, p.136; Abolmasov N.G., Abolmasov N.N. , Bychkov VA, Al Hakim "Orthopedic Dentistry". A guide for doctors, dental technicians ... Smolensk, 200 0, pp. 120-123).

 From silicone elastic masses, Molloplast-V (made in Germany) or Ortosil (Russian made), consisting of 62.97% CTKN paste, are possible; 11.34% ZnO; 17644% SiO (modified aerosil); 0.5% redoxide and liquid (percent paste weight); catalyst PDE-3-6.3, catalyst DBA-2T-3.15, primer (Zholudev S.E. "Plastics used in orthopedic dentistry". Yekaterinburg, 1999, p. 68; Abolmasov NG, Abolmasov N .N., Bychkov V.A., Al Hakim "Orthopedic Dentistry". Guides for doctors, dental technicians ... Smolensk, 2000, pp. 120-123).

 From polyvinyl chloride or based on vinyl chloride with butyl acrylate, flexible plastic PM-01 (manufactured in Ukraine) is used, which is an elastomer based on a copolymer of chlorovinyl butyl acrylate, and Novus-TM (manufactured in the USA). This is a polyphosphazene fluoroelastomer (Trezubov V.N., Shteigart M.Z., Mishnev L.M. "Orthopedic dentistry; Applied materials science." Textbook for medical schools. St. Petersburg, "SpecLit", 1999, 2001, p.136- 137; Abolmasov N.G., Abolmasov N.N., Bychkov V.A., Al Hakim "Orthopedic Dentistry". A Guide for Doctors, Dental Technicians ... Smolensk, 2000, pp. 120-123).

 In the proposed apparatus, it is preferable to use elastic plastic PM-01, characterized by the constancy of elasticity and bond strength with the basis of the apparatus.

The following general physical and mechanical properties are taken into account in the listed elastic plastics: tensile strength, adhesion to the base, tensile strength, elongation at break, elastic modulus, etc. (Abolmasov N.G., Abolmasov N.N., Bychkov V.A., Al Hakim "Orthopedic Dentistry". A Guide for Doctors, Dental Technicians ... Smolensk, 2000, pp. 120-123). For example, PM-01 at a molding temperature of 125-135 ^o C has a tensile strength at break of 4.19-8.15 MPa, elongation at break of 421.43-501.14%, modulus of elasticity of 0.97-1.72 MPa , bounce elasticity 11.0-8.5% (Golubev N. A. "The use of the modified design of a removable denture for a complete dentition for orthopedic treatment of patients with difficult clinical conditions of the prosthetic bed". The dissertation is for the study of academician. Ph.D. honey. Sciences, Voronezh, 1997, p. 71).

In the proposed apparatus, elastic PM-01 plastic was used by simultaneous packaging with the base plastic in a dough-like state, which ensured their strong bond. The elastic plastic PM-01 is prepared in a porcelain mortar: 6-7 ml of the liquid included in the kit is taken per 10 g of powder; everything is thoroughly mixed until a homogeneous mass is obtained. After molding the PM-01 plastic, the cuvette is clamped in a clasp, placed in a water bath at room temperature and the temperature of the water is increased to 100 ^° C for 50 minutes, kept at this temperature for 30-40 minutes and cooled in air (Trezubov V.A., Shteingart MZ, Mishnev LM "Orthopedic dentistry; Applied materials science." Textbook for medical universities. St. Petersburg, "SpecLit", 1999, 2001, pp. 136-137).

 The drawing shows a General view of the device.

 The device consists of a base (1) made of rigid plastic, with a cut (2) in the middle and a mechanical expansion screw (3); at the edges of the base (1) is additionally an elastic plastic (4) and two clasps (5).

 The device operates as follows: the device is activated by activating a mechanical expansion screw (3). The strength of the mechanical expansion screw (3) is transferred to the rigid base (1) of the apparatus, and then to the elastic plastic (4). The device is inserted into the oral cavity and fixed with clasps (5) on the lateral teeth. Elastic plastic (4), having plasticity and elasticity like a spring, gradually and constantly transfers this force (pressure force) to its place of application.

 Using this device allows you to reduce the traumatic and toxic effects on soft and hard tissues of the teeth, exerts uniform pressure on them, reduces the time of adaptation to the device, which increases the effectiveness of orthodontic treatment.

Claims (1)

 A removable orthodontic apparatus, which is a basis made of hard plastic with a longitudinal cut, a mechanical expansion screw and two clasps, characterized in that an elastic plastic is additionally located at the edges of the hard basis, which is adjacent to transmit pressure force to the oral surface of the teeth and part of the mucous membrane of the slope of the alveolar ridge moreover, elastic plastic isolates soft and hard tooth tissues from hard plastic.