title: [Biomechanical fundamentals of the dentofacial anomalies treatment].
abstract: The results of biomechanical investigations of the central incisor having the formed root by mathematical modeling methods are presented. The centre of resistance of a tooth, the optimal horizontal forces of action and reaction were determined. The advantage of discontinuous forces due to amortization influence of periodontal ligament fluid was biomechanically proven. The recommendations which were given after experiments and mathematical modelling were used during orthodontic treatment of 30 patients (12-18 years) with anomalies of dental arches and occlusions by mechanically acting appliances and combined ones. At the end of the treatment 90.0% of the patients had physiological teeth angulation, 93.3% had the physiological torque. However using the removable single-jaw mechanically acted appliances had not lead to improvement of the first Angle-Endruce's key in 50.0% of the patients and to elimination of gaps between teeth in 23.4% of the patients.
authors.forename: A N
authors.initials: AN
authors.lastname: Elovikova
authors.forename: M Iu
authors.initials: MIu
authors.lastname: Niashin
authors.forename: E Iu
authors.initials: EIu
authors.lastname: Simanovskaia
authors.forename: L M
authors.initials: LM
authors.lastname: Gvozdeva
authors.forename: Iu I
authors.initials: IuI
authors.lastname: Niashin
mesh_terms: D000293:Adolescent; D001696:Biomechanical Phenomena; D003724:Dental Arch / Q000503:physiopathology*; D003766:Dental Occlusion; D003799:Dental Stress Analysis; D006801:Humans; D007180:Incisor; D008962:Models, Theoretical; D009971:Orthodontics, Corrective / Q000295:instrumentation*; D010510:Periodontal Diseases / Q000503:physiopathology*; D010519:Periodontium / Q000503:physiopathology*