Effect of the number and inclination of implant on stress distribution for mandibular full-arch fixed prosthesis.
- Author:
Xiaoying ZHENG
1
;
Xiaomei LI
;
Zhen TANG
;
Lulu GONG
;
Dalin WANG
2
Author Information
- Publication Type:Journal Article
- MeSH: Dental Implants; Dental Prosthesis Design; Dental Prosthesis, Implant-Supported; Dental Stress Analysis; Finite Element Analysis; Mandible; Prostheses and Implants; Prosthesis Implantation
- From: Chinese Journal of Stomatology 2014;49(6):339-342
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo study the effect of implant number and inclination on stress distribution in implant and its surrounding bone with three-dimensional finite element analysis.
METHODSA special denture was made for an edentulous mandible cast to collect three-dimensional finite element data. Three three-dimensional finite element models were established as follows. Model 1: 6 paralleled implants; model 2: 4 paralleled implants; model 3: 4 implants, the two anterior implants were parallel, the two distal implants were tilted 30° distally.
RESULTSAmong the three models, the maximum stress values found in anterior implants, posterior implants, and peri-implant bone were modle 3
CONCLUSIONSWithin the limitation of this study, when implants are placed parallel, the maximum stress of the distal implant can be reduced by increasing the number of implant.When the number of implant was decreased from six to four, the maximum stress around the implant can be reduced by tilting the distal implant. This design will provide a better prostheses effect than the design with six implants does.
