[The biomechanical behaviour of the flexible acrylic partial prosthetics].
The simulation methods constitute a modern method absolutely necessary at the forerunner stage of the practical unwinding of the research stages, outlining the precise directions for the practical application, the final results influencing the dental practice.


OBJECTIVE
Our study proposes itself to analyze through the method of the finite element the status of the tension and the deformations registered at the level of the partially extended indentured prosthetic field and at the level of the partially flexible acrylic prosthetics.


METHODS
The first step was constituted by the realization of CT followed by their scanning and the usage of the material constants. Following the tomographic computer exam at the patients submitted to the study, it was observed a resorption and an important atrophy at the level of the jaw indented crest, after a period of four months, with the flexible prosthetics type Valplast, this aspect having profound clinical and viability implications to the selected therapy solution.


RESULTS
For the 3D reconstruction of the different types of partial extended indentation the Amira universal program was used for the 3D reconstructions for any type of Tomographic Computer. Following the 3D reconstructions of the information obtained on the tomographic computer on the images it can be observed an important resorption of the jaw bone in the area of the edentulous space with an acrylic flexible prosthetics. The intrusion of the silicon material Rubber type, as a viable solution for the reduction of the absorption rate and atrophy of the partially indented prosthetics field, has results proportional to the type of the force applied and the applying of this.


CONCLUSIONS
The simulation of the real clinical situations following the contribution of the tomographic computer constitutes a highly important stage in the evaluation of the degree of resorption and atrophy at the level of the indented crests, process whose parameters are influenced by the factorial accumulation with a profound impact in the clinical result.
Gheban
E
E
Departamentul de Proteze mobile si Tehnologia protezelor dentare, Facultatea de Medicină Dentară, Universitatea de Medicină si Farmacie Gr.T. Popa Iaşi.
Forna
Norina Consuela
NC
D000180:Acrylic Resins / Q000627:therapeutic use*; D001696:Biomechanical Phenomena; D003198:Computer Simulation; D015921:Dental Implants; D017267:Dental Prosthesis Design; D003793:Dental Restoration, Permanent; D006801:Humans; D007091:Image Processing, Computer-Assisted; D021621:Imaging, Three-Dimensional; D007576:Jaw, Edentulous, Partially / Q000534:rehabilitation* / Q000601:surgery; D014014:Tissue Adhesives / Q000627:therapeutic use*; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome
D000180:Acrylic Resins; D015921:Dental Implants; D014014:Tissue Adhesives