The stress distribution in the fixed denture of edentulous maxilla supported by six implants
10.3969/j.issn.1001-3733.2016.05.014
- VernacularTitle:6颗种植体支持的上颌无牙颌固定义齿应力分布研究
- Author:
Haidong DONG
;
Chunbo TANG
;
Chuwei ZHOU
;
Yulin SUN
- Keywords:
Dental implant;
Stress distribution;
Bone-to-implant interface;
Three-dimensional finite element
- From:
Journal of Practical Stomatology
2016;32(5):659-663
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To analyze the stress distribution in the fixed denture of edentulous maxilla supported by 6 implants at different implant position.Methods:The skull of a volunteer with total anodontia and moderate alveolar bone absorption was scanned by CBCT.Computer software,Abaqus 6.9,Geomagic Studio 12,and Mimics10.01,were applied for data processing and reconstruction of a 3D finite element model of implant-supported fixed denture with 6 implants in different location;and then,the stress distribution was analisized.Results:3D finite element model of edentulous maxillary implant-supported fixed bridge with good geometric similarity was established.The implant neck bone interface stress value of the distal of the implant fixed bridge at the molar area,the stress concentration area,was the maximum.The main stresses were compressive in the cortical bone adjacent to the mesial or the distal implants.The shift of the denture decreased from anterior to posterior.In model Ⅰ (implants at 13,15,17,23,25 and 27) distal cantilever was not used and the stress distribution was the evenest.Conclusion:The implant position at 13,15,17,23,25 and 27 of edentulous maxillary 6-implants-supported fixed bridge was the best for the stress distribution among the 8 models.
