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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 대한치과보철학회 The Journal of Advanced of Prosthodontics The Journal of Advanced of Prosthodontics 제11권 제3호
- 발행연도
- 2019.1
- 수록면
- 169 - 178 (10page)
이용수
초록· 키워드
오류제보하기
PURPOSE. While dental implants have displayed high success rates, poor mechanical fixation is a common complication, and their biomechanical response to occlusal loading remains poorly understood. This study aimed to develop and validate a computational model of a natural first premolar and a dental implant with matching crown morphology, and quantify their mechanical response to loading at the occlusal surface. MATERIALS AND METHODS. A finite-element model of the stomatognathic system comprising the mandible, first premolar and periodontal ligament (PDL) was developed based on a natural human tooth, and a model of a dental implant of identical occlusal geometry was also created. Occlusal loading was simulated using point forces applied at seven landmarks on each crown. Model predictions were validated using strain gauge measurements acquired during loading of matched physical models of the tooth and implant assemblies. RESULTS. For the natural tooth, the maximum von-Mises stress (6.4 MPa) and maximal principal strains at the mandible (1.8 mε, -1.7 mε) were lower than those observed at the prosthetic tooth (12.5 MPa, 3.2 mε, and –4.4 mε, respectively). As occlusal load was applied more bucally relative to the tooth central axis, stress and strain magnitudes increased. CONCLUSION. Occlusal loading of the natural tooth results in lower stress-strain magnitudes in the underlying alveolar bone than those associated with a dental implant of matched occlusal anatomy. The PDL may function to mitigate axial and bending stress intensities resulting from off-centered occlusal loads. The findings may be useful in dental implant design, restoration material selection, and surgical planning.
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참고문헌 (40)
참고문헌 신청
Moraschini V / 2015 / Evaluation of survival and success rates of dental implants reported in longitudinal studies with a follow-up period of at least 10 years : a systematic review / Int J Oral Maxillofac Surg 44:377~388
Pjetursson BE / 2014 / Improvements in implant dentistry over the last decade : comparison of survival and complication rates in older and newer publications / Int J Oral Maxillofac Implants 29:308~324
Jung RE / 2008 / A systematic review of the 5-year survival and complication rates of implant-supported single crowns / Clin Oral Implants Res 19:119~130
Esposito M / 1998 / Biological factors contributing to failures of osseointegrated oral implants. (I). Success criteria and epidemiology / Eur J Oral Sci 106:527~551
Esposito M / 1998 / Biological factors contributing to failures of osseointegrated oral implants. (II). Etiopathogenesis / Eur J Oral Sci 106:721~764
Pjetursson BE / 2014 / Improvements in implant dentistry over the last decade : comparison of survival and complication rates in older and newer publications / Int J Oral Maxillofac Implants 29:308~324
Jung RE / 2008 / A systematic review of the 5-year survival and complication rates of implant-supported single crowns / Clin Oral Implants Res 19:119~130
Esposito M / 1998 / Biological factors contributing to failures of osseointegrated oral implants. (I). Success criteria and epidemiology / Eur J Oral Sci 106:527~551
Esposito M / 1998 / Biological factors contributing to failures of osseointegrated oral implants. (II). Etiopathogenesis / Eur J Oral Sci 106:721~764
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