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Evaluation of a new dentinal bonding system
J G Fitchie1, A D Puckett, J H Hembree
1Department of Restorative Dentistry, University of Mississippi Medical Center, School of Dentistry, Jackson 39216.
Quintessence International (Berlin, Germany : 1985)
|January 1, 1993
Summary
A new dentinal bonding system demonstrated superior performance over older agents in preventing microleakage over 60 days. This dental material shows promise for improved restoration longevity and reduced marginal gap formation.
Area of Science:
- Dental Materials Science
- Restorative Dentistry
- Biomaterials
Background:
- Dental bonding systems are crucial for restoring tooth structure and preventing microleakage.
- First-generation bonding agents have limitations in long-term marginal integrity.
- Evaluating new dentinal bonding systems is essential for advancing restorative techniques.
Purpose of the Study:
- To compare the in vitro microleakage of a novel dentinal bonding system against two first-generation bonding agents.
- To assess the long-term sealing ability of a new dental restorative material.
Main Methods:
- Simulated Class V cavities were prepared in bovine incisors.
- Teeth were restored using a new bonding system and two first-generation agents with composite resin.
- Restorations underwent thermocycling and microleakage evaluation at 24 hours and 60 days.
Main Results:
- No significant difference in microleakage was observed between materials at 24 hours.
- After 60 days, the new bonding system showed significantly less gingival margin microleakage compared to first-generation agents.
- Gingival margins showed increased leakage over time for all materials, while incisal margins remained stable.
Conclusions:
- The new dentinal bonding system offers improved long-term marginal seal compared to older agents.
- Gingival margins are more susceptible to microleakage over time in Class V restorations.
- Further research is needed to understand the factors influencing microleakage in dental restorations.