The relationship between IL-1 gene polymorphism and marginal bone loss around dental implants.

Purpose: Early marginal bone loss around dental implants has been found during the bone healing period before stage II surgery despite a lack of apparent cause, and the etiology of this bone loss is unclear. This study was designed to investigate whether interleukin-1 gene polymorphism is associated with the marginal bone loss around the implants before stage II.

Materials And Methods: One hundred forty-three implants were placed in 59 patients.

[Comparative evaluation of the tiled abutment teeth restored with or without fixed bridge on stress distribution by anisotropic finite element method].

Objective: To compare the tilted abutment teeth restored with or without fixed bridge on stress distribution by anisotropic finite element method when the vertical and the oblique loads are simulated.

Methods: Three-dimensional finite element model was constructed by using SCT image reconstruction technique, self-programming and ANSYS software with the anisotropic elasticity data. The static loads were simulated according to the restored and unrestored situation.

[Analysis of the movement of long axis and the distribution of principal stress in abutment tooth retained by conical telescope].

Objective: To study the movement of long axis and the distribution of principal stress in the abutment teeth in removable partial denture which is retained by use of conical telescope.

Methods: An ideal three dimensional finite element model was constructed by using SCT image reconstruction technique, self-programming and ANSYS software. The static loads were applied.