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Effect of gap dimension on composite resin cement wear
K Kawai1, B P Isenberg, K F Leinfelder
1Department of Operative Dentistry, Osaka University, Faculty of Dentistry, Japan.
Quintessence International (Berlin, Germany : 1985)
|January 1, 1994
Summary
This study investigated composite resin luting agent wear, finding a linear relationship between wear rate and gap dimensions. Microfilled cements showed better wear resistance than hybrid types.
Area of Science:
- Dental Materials Science
- Biomaterials Engineering
Background:
- Limited data exists on the longevity of luting agents for composite resin and ceramic inlays.
- Understanding luting agent wear is crucial for inlay survival and restoration longevity.
Purpose of the Study:
- To investigate the relationship between the wear rate of composite resin luting agents and interfacial gap dimensions.
- To correlate wear rate with filler particle size in luting agents.
- To establish a method for determining the wear resistance of dental cements.
Main Methods:
- An in vitro study design was employed.
- Gap dimensions between inlay and cavity preparation were controlled.
- Linear regression analysis was used to model the relationship between wear and gap dimensions.
Main Results:
- A linear relationship was confirmed between interfacial gap dimensions and the wear rate of the composite resin luting agent.
- The inclination of the regression line served as an indicator of wear extent.
- Two hybrid cements demonstrated inferior wear resistance compared to a microfilled cement.
Conclusions:
- The wear resistance of dental cements can be quantitatively assessed by analyzing the inclination of the wear-gap regression line.
- Microfilled luting agents exhibit superior wear resistance over hybrid cements in dental applications.