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Published on: July 21, 2014
Optical X-ray density of composite resin luting agents
Helena G Carracho1, Ivori D da Silveira, Clarissa G Soares
1Department of Restorative Dentistry, School of Dentistry, Passo Fundo University, Brazil.
Acta Odontologica Latinoamericana : AOL
|December 15, 2011
Summary
Optical density of composite resin luting agents was assessed. RelyX ARC (RY) and C&B Cement (CB) showed similar optical density to enamel and dentin, unlike Enforce (E) and Flow it (FI).
Area of Science:
- Dental Materials Science
- Radiology
- Biomaterials
Background:
- Accurate radiographic assessment of dental restorations is crucial.
- Understanding the optical density of luting agents is essential for distinguishing them from tooth structures on radiographs.
- Composite resin luting agents vary in their composition, potentially affecting their radiographic appearance.
Purpose of the Study:
- To evaluate and compare the optical density of four composite resin luting agents: RelyX ARC (RY), Enforce (E), C&B Cement (CB), and Flow it (FI).
- To compare the optical density of these luting agents with that of natural enamel and dentin.
- To determine the distinguishability of these luting agents from dental structures at different thicknesses (2, 3, and 4 mm) on radiographs.
Main Methods:
- Four composite resin luting agents (RY, E, CB, FI) and tooth crowns were prepared in standardized thicknesses (2, 3, 4 mm).
- Digital radiographs were obtained using a Digora system for both materials and tooth samples.
- Optical density readings were taken from enamel, dentin, and each luting agent across all thicknesses, with statistical analysis (Student's t-test) performed.
Main Results:
- RelyX ARC (RY) and C&B Cement (CB) exhibited optical densities statistically similar to enamel and dentin across all tested thicknesses.
- Enforce (E) and Flow it (FI) showed statistically higher optical densities compared to enamel and dentin.
- RelyX ARC (RY) presented lower optical density values than enamel and the other tested materials.
Conclusions:
- Composite resin luting agents Enforce (E) and Flow it (FI) are radiographically distinguishable from enamel and dentin.
- Composite resin luting agents RelyX ARC (RY) and C&B Cement (CB) are not easily distinguished from natural tooth structures on radiographs.
- The findings suggest that the choice of luting agent can impact radiographic interpretation in restorative dentistry.
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