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Handling protocol of posterior composites--part 3: matrix systems
1Restorative Dentistry, University of Western Cape. cstrydom@uwc.ac.za
Summary
Achieving ideal proximal contact in posterior composite restorations is challenging due to material limitations. Special matrix systems and techniques are needed for proper contact, especially in wide cavities.
Area of Science:
- Dentistry
- Dental Materials
Background:
- Direct posterior composite restorations face challenges in achieving ideal proximal contours and interproximal contacts.
- These limitations can lead to food impaction and periodontal disease.
Purpose of the Study:
- To address the difficulties in establishing proper proximal contacts with direct posterior composite restorations.
- To explore the need for advanced matrix systems and techniques.
Main Methods:
- The study discusses the inherent properties of composite materials and their interaction with matrix systems.
- It highlights the limitations of traditional circumferential matrices for posterior composites.
Main Results:
- Composites exhibit less internal force compared to amalgams, making them susceptible to deformation by matrix bands.
- Achieving tight contacts is possible in small-moderate cavities but requires specialized approaches for wider cavities.
Conclusions:
- Standard matrix systems are often insufficient for creating optimal proximal contacts in posterior composite restorations.
- Specialized matrix systems and wedging techniques are essential for restoring wide buccolingual cavities effectively.