Biomedical subjects

S S Gavriushin

Publications and source records attributed to S S Gavriushin.

6 recordsLinked to original sources

PubMed2002

[Planning of orthodontic treatment in patients with maxillary dentition defects using mathematical methods].

Stress-deformed status of bone tissue in the implantation zone was studied. The relationship between the level of strain in the spongy and cortical layers of the bone and spatial location of the implant in the jaw and its geometrical parameters is demonstrated. Numerical analysis of the level of bone tissue stress was carried out on the basis of experimentally created three-dimensional solid-body model of the maxilla. The process of changes in the distribution of tensions during different phases of mastication was investigated. The potentialities of numerical analysis in the planning of orthodontic treatment of patients with dentition defects making use of implants are demonstrated.

Dental Implantation, Endosseous↗

PubMed1998

[A biomechanical study of dental implants using a method for 3-dimensional volumetric mathematical modelling].

Biomechanics of the dental implants introduced into alveoli immediately after tooth extraction has been investigated. The programme ANSYS has been used. Three-dimension volume mathematical models were calculated, with the help of which the tense-deformed state of the supportive biological tissues has been investigated in the area of direct implantation. On the grounds of the results obtained a conclusion has been made that there is an essential improvement of the load distribution under investigation of the inner bone modified biologically designed implants for direct implantation.

Alveolar Process↗

PubMed1998

[The features of using intraosseous implants with intramobile elements].

Functional features of type Brånemark implants are compared with those of type IMZ implants. The problem of determining optimal stiffness characteristics of type IMZ implants has been solved by means of linear programming. The conclusion was made on considerable improvement in distribution of loads when type IMZ osseointegrated implants are used as supporting elements in the denture.

Bite Force↗

PubMed1997

[The enhancement of the efficacy of patient orthodontic treatment based on the mathematical modelling of prospective implant designs].

Opportunities to increase prosthetic treatment efficiency by means of applying osseointegrated implants of traditional and prospective types are analysed. A technique of mathematical modelling of the interaction between implants and jaw bone is exposed. The numerical model and applied program, developed on the basis of finite element method, enabling to analyse a stress strain state of the bone and to determine extreme safe loads on implants are described. It is shown, that the most loaded zone is a layer of the compact bone directly contiguous to the neck of the implant. That is in good agreement with the results of clinical research, according to which just this zone has the highest percentage of complications. Methods for further optimisation of implants and prosthetic structures for the purpose to perfect the techniques of prosthetic treatment are discussed.

Computer Simulation↗

PubMedDate not supplied

[The mathematical modelling of orthodontic designs supported on endosseous implants].

The priority problems in orthodontic treatment of denture total defects, making use of intraosseous implants, are discussed. The study was aimed at estimation of the optimal number of implants and sites of implantation, choice of a rational orthodontic design permitting the distribution of the masticatory load in proportion with the supporting tissue potentialities. The desired effect is achieved via estimation of the mathematical model of the denture design supported by intraosseous implants.

Biomechanical Phenomena↗

PubMedDate not supplied

[The use of mathematical modelling in improving the orthodontic treatment of end defects of the dental arches].

Mathematical modelling allowed to use specially designed software package for calculation of the necessary number of variants of dimensions of denture carcass while planning the orthodontic treatment. This could be done for each patient individually, thus ensuring the correct choice of orthodontic technique to replace the end defects of the dentition.

Computer Simulation↗