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Comparison of the resin-dentin interface in primary and permanent teeth
1Department of Pedodontics, Faculty of Dentistry, University of Gazi, Turkey.
The Journal of Clinical Pediatric Dentistry
|October 31, 1998
Summary
The hybrid layer, crucial for dental restorations, is significantly thicker in primary teeth compared to permanent teeth. This finding holds true regardless of whether a multi-step or single-component Syntac bonding system is used.
Area of Science:
- Dentistry
- Dental Materials Science
- Adhesive Dentistry
Background:
- The hybrid layer is a critical interface in dental restorations, formed during the bonding process between tooth structure and restorative materials.
- Understanding factors influencing hybrid layer thickness, such as tooth type and bonding system, is essential for optimizing restoration longevity and clinical success.
Purpose of the Study:
- To compare the hybrid layer thickness in primary versus permanent teeth.
- To evaluate the influence of two different Syntac bonding systems (multi-step and single-component) on hybrid layer formation.
Main Methods:
- Fourteen primary molars and 14 permanent bicuspids were divided into four groups.
- Teeth were restored using either the Syntac multi-step or Syntac Single Component bonding system.
- Hybrid layer thickness was assessed using Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM).
Main Results:
- A significantly greater hybrid layer thickness was observed in primary teeth compared to permanent teeth (p < 0.05).
- No statistically significant difference in hybrid layer thickness was found between the Syntac multi-step and Syntac Single Component bonding systems (p < 0.05).
Conclusions:
- Primary teeth exhibit a thicker hybrid layer than permanent teeth when using Syntac bonding systems.
- Both Syntac bonding systems produced comparable hybrid layer thicknesses, suggesting tooth type is a more influential factor than the specific Syntac formulation tested.