Experimental studies of composite shrinkage of dental restorations

Shu Fen Chuang, Pin Sheng Huang, Terry Yuan Fang Chen, Lo Hao Huang, Ko Chih Su, Chi Han Chang

研究成果: Conference contribution

摘要

Dental composites are light-curable resin-based materials with an inherent defect of polymerization shrinkage which may cause tooth deflection and debonding of restorations. The shrinkage behaviors of dental composites under four different light curing regimens were investigated by using digital image correlation (DIC) method. Experimental results showed that the shrinkage in unbonded restorations has the greatest shrinkage strain on the top surface. The bonded restorations did not show a typical centripetal shrinkage patterns as their unbonded restorations, and had greater downward displacements. Vertical curing at regular intensity caused the greatest shrinkage strain. Low-intensity curing reduced overall shrinkage at cervical margin, but did not prevent debonding after storage. Oblique curing caused asymmetric shrinkage with less deformation at tooth-shielded side and reduced shrinkage due to the attenuated polymerization rate rather than guided shrinkage direction. This studies may provide useful information for clinical usage, and further stress analysis by numerical methods.

原文English
主出版物標題6th International Conference on the Development of Biomedical Engineering in Vietnam, BME6
編輯Toi Vo Van, Thanh An Nguyen Le, Thang Nguyen Duc
發行者Springer Verlag
頁面65-68
頁數4
ISBN(列印)9789811043604
DOIs
出版狀態Published - 2018 一月 1
事件6th International Conference on the Development of Biomedical Engineering in Vietnam, BME 2016 - Ho Chi Minh, Viet Nam
持續時間: 2016 六月 272016 六月 29

出版系列

名字IFMBE Proceedings
63
ISSN(列印)1680-0737

Other

Other6th International Conference on the Development of Biomedical Engineering in Vietnam, BME 2016
國家Viet Nam
城市Ho Chi Minh
期間16-06-2716-06-29

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Biomedical Engineering

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  • 引用此

    Chuang, S. F., Huang, P. S., Chen, T. Y. F., Huang, L. H., Su, K. C., & Chang, C. H. (2018). Experimental studies of composite shrinkage of dental restorations. 於 T. Vo Van, T. A. Nguyen Le, & T. Nguyen Duc (編輯), 6th International Conference on the Development of Biomedical Engineering in Vietnam, BME6 (頁 65-68). (IFMBE Proceedings; 卷 63). Springer Verlag. https://doi.org/10.1007/978-981-10-4361-1_11