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Experimental Studies of Composite Shrinkage of Dental Restorations

  • Conference paper
  • First Online:
6th International Conference on the Development of Biomedical Engineering in Vietnam (BME6) (BME 2017)

Part of the book series: IFMBE Proceedings ((IFMBE,volume 63))

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Abstract

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.

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Acknowledgements

This study was supported by Research Grant NSC-101-2320-B006-003-MY3 from the National Science Council, Taiwan.

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Authors and Affiliations

  1. Institute of Oral Medicine and Department of Stomatology, National Cheng Kung University, Tainan, Taiwan

    Shu-Fen Chuang

  2. Department of Mechanical Engineering, National Cheng Kung University, Tainan, Taiwan

    Pin-Sheng Huang, Terry Yuan-Fang Chen & Lo-Hao Huang

  3. Department of Medical Research, Taichung Veterans General Hospital, Taichung, Taiwan

    Ko-Chih Su

  4. Department of Biomedical Engineering, National Cheng Kung University, Tainan, Taiwan

    Chi-Han Chang

Authors
  1. Shu-Fen Chuang
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  2. Pin-Sheng Huang
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  3. Terry Yuan-Fang Chen
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  4. Lo-Hao Huang
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  5. Ko-Chih Su
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  6. Chi-Han Chang
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Corresponding author

Correspondence to Terry Yuan-Fang Chen .

Editor information

Editors and Affiliations

  1. Biomedical Engineering Department, Vietnam National University, Ho Chi Minh , Ho Chi Minh City, Vietnam

    Toi Vo Van

  2. Department of Biomedical Engineering, Vietnam National University, Ho Chi Minh Department of Biomedical Engineering, Ho Chi Minh City, Vietnam

    Thanh An Nguyen Le

  3. Biomedical Engineering Department, Vietnam National University, Ho Chi Minh Biomedical Engineering Department, Ho Chi Minh City, Vietnam

    Thang Nguyen Duc

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© 2018 Springer Nature Singapore Pte Ltd.

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Chuang, SF., Huang, PS., Chen, T.YF., Huang, LH., Su, KC., Chang, CH. (2018). Experimental Studies of Composite Shrinkage of Dental Restorations. In: Vo Van, T., Nguyen Le, T., Nguyen Duc, T. (eds) 6th International Conference on the Development of Biomedical Engineering in Vietnam (BME6) . BME 2017. IFMBE Proceedings, vol 63. Springer, Singapore. https://doi.org/10.1007/978-981-10-4361-1_11

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  • DOI: https://doi.org/10.1007/978-981-10-4361-1_11

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  • Publisher Name: Springer, Singapore

  • Print ISBN: 978-981-10-4360-4

  • Online ISBN: 978-981-10-4361-1

  • eBook Packages: EngineeringEngineering (R0)

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