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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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기사명 저자명 페이지 원문 목차
Influence of implant-abutment connection structure on peri-implant bone level in a second molar : a 1-year randomized controlled trial Jin-Cheol Kim, Jungwon Lee, Sungtae Kim, Ki-Tae Koo, Hae-Young Kim, In-Sung Luke Yeo p.147-154

Simulated occlusal adjustments and their effects on zirconia and antagonist artificial enamel Najm Mohsen Alfrisany, Babak Shokati, Laura Eva Tam, Grace Mendonca De Souza p.162-168

A study of fracture loads and fracture characteristics of teeth Chang-Yong Sheen, Jin-Keun Dong, William Arthur Brantley, David Seungho Han p.187-192

Comparison of different impression techniques for edentulous jaws using three-dimensional analysis Sua Jung, Chan Park, Hong-So Yang, Hyun-Pil Lim, Kwi-Dug Yun, Zhai Ying, Sang-Won Park p.179-186

A simple and effective method for addition silicone impression disinfection Maria João Azevedo, Inês Correia, Ana Portela, Benedita Sampaio-Maia p.155-161

Load response of the natural tooth and dental implant : a comparative biomechanics study Dale Robinson, Luis Aguilar, Andrea Gatti, Jaafar Abduo, Peter Vee Sin Lee, David Ackland p.169-178

참고문헌 (40건) : 자료제공( 네이버학술정보 )

참고문헌 목록에 대한 테이블로 번호, 참고문헌, 국회도서관 소장유무로 구성되어 있습니다.
번호 참고문헌 국회도서관 소장유무
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37 Rungsiyakull P, Rungsiyakull C, Appleyard R, Li Q, Swain M, Klineberg I. Loading of a single implant in simulated bone. Int J Prosthodont 2011;24:140-3. 미소장
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