Finite element analysis of implant-embedded maxilla model from CT data: Comparison with the conventional model
スポンサーリンク
概要
- 論文の詳細を見る
Purpose: There are no entire maxillary finite element analysis models available, as a base of reference for the dimensions of conventional segment finite element analysis models. The objectives of this study were: (1) to construct a maxillary model derived from a human skull and to investigate the strain distribution around a posterior implant embedded in it; (2) to investigate the usability of conventional segment maxillary models.Methods: CT DICOM data of a human dried skull maxilla was imported into the Mesh Generation Tools (ANSYS AI environment) and a computer-generated implant-abutment unit was bicortically embedded into it. In this Large model, Von Mises strains under axial and buccolingual loads were then calculated by a finite element program. Moreover, two simplified maxillary segments (Simplified models) were computer-generated and their Von Mises strains were similarly calculated.Results: Although absolute values differed markedly, strain distribution patterns in the cortical bone were similar to those in the Simplified models: high Von Mises strains in the cortical bone concentrated in the sinus floor around the implant apex under axial load, and in the alveolar crest around the implant neck under buccolingual load.Conclusions: The simplified and segmented three-dimensional finite element models of the human maxilla showed the same locations of the highest equivalent strains as the full maxilla model created from CT DICOM data. If absolute strain values are not of interest, the Simplified models could be used in strain analyses of simulated posterior maxilla for diagnostic suggestions in implant placement.
- 社団法人 日本補綴歯科学会の論文
著者
-
Hayashi Takafumi
Division Of Oral And Maxillofacial Radiology Department Of Tissue Regeneration And Reconstruction Ni
-
Nomura Shuichi
Division of Comprehensive Prosthodontics, Course for Oral Health Science, Niigata University Graduate School of Medical and Dental Sciences
-
Kitamura Eriko
Division of Bio-Prosthodontics, Department of Oral Health Science, Niigata University Graduate School of Medical and Dental Sciences
-
Okumura Nobuaki
Temporomandibular Joint Clinic, Niigata University Medical and Dental Hospital
-
Stegaroiu Roxana
Division of Oral Science for Health Promotion, Department of Oral Health and Welfare, Niigata University Graduate School of Medical and Dental Sciences
-
Nishiyama Hideyoshi
Division of Oral and Maxillofacial Radiology, Department of Oral Health Science, Niigata University Graduate School of Medical and Dental Sciences
-
Kurokawa Kouichi
Division of Oral Science for Health Promotion, Department of Oral Health and Welfare, Niigata University Graduate School of Medical and Dental Sciences
関連論文
- The Prevalence of Erosive Osseous Changes of the Articular Eminence in the Temporomandibular Joint in Patients with mandibular Prognathism without Internal Derangement; MR and Helical CT Findings
- The Articular Disc Position Relative to the Mandibular Condyle in Patients with Skeletal Class III Malocclusion on MRI
- Mucoepidermoid Carcinoma in Children : Report of a case and review of literature
- Dentigerous Cyst Associated with a Supernumerary Malformed Tooth : Report of a case and a clinicopathologic review
- Influence of Maxillary Cortical Bone Thickness, Implant Design and Diameter on Stress around Implants : A 3-dimensional Finite Element Analysis
- Effect of Post Type and Cyclic Loading on the Failure Resistance of Restored Teeth
- The Usefulness of Follow-Up Sonography in the Detection of Subsequent Cervical Lymph Node Metastasis in Patients with Stage I/II Tongue Carcinoma
- Application of ultrasonography in dentistry
- Finite element analysis of implant-embedded maxilla model from CT data: Comparison with the conventional model
- Immediate implant loading following computer-guided surgery
- Influence of maxillary cortical bone thickness, implant design and implant diameter on stress around implants: A three-dimensional finite element analysis