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Shrinkage of Dental Composite in Simulated Cavity Measured with Digital Image Correlation
Published on: July 21, 2014
Shrinkage Stresses Generated during Resin-Composite Applications: A Review
Luis Felipe J Schneider1, Larissa Maria Cavalcante, Nick Silikas
1Department of Restorative Dentistry, The University of Passo Fundo, Passo Fundo 99001-970, RS, Brazil.
Journal of Dental Biomechanics
|October 16, 2010
Summary
Polymerization shrinkage in dental resin composites causes stress, leading to clinical issues like marginal failure and secondary caries. This paper reviews shrinkage stresses, consequences, and recent advances in dental materials.
Area of Science:
- Dental Materials Science
- Polymer Chemistry
- Biomaterials Engineering
Background:
- Resin composites are widely used in restorative dentistry.
- Polymerization shrinkage remains a significant challenge in dental composite applications.
- Shrinkage induces stress at the tooth-restoration interface, causing clinical problems.
Purpose of the Study:
- To provide a comprehensive overview of shrinkage stresses in dental resin composites.
- To discuss the clinical consequences arising from polymerization shrinkage.
- To review recent advancements aimed at mitigating shrinkage-related issues.
Main Methods:
- Literature review of existing research on resin composite polymerization shrinkage.
- Analysis of studies detailing the mechanisms of stress development.
- Synthesis of information on clinical outcomes and material innovations.
Main Results:
- Polymerization shrinkage generates significant stress, impacting material integrity and tooth structure.
- Clinical drawbacks include marginal failure, secondary caries, staining, and post-operative sensitivity.
- Ongoing research focuses on developing low-shrinkage composites and improved application techniques.
Conclusions:
- Shrinkage stress is an inherent limitation of current dental resin composites.
- Understanding shrinkage mechanisms is crucial for improving restoration longevity.
- Further material development and clinical strategies are needed to minimize adverse effects.
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