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Marginal adaptation of the Concept inlay system
J C Mitchem1, P C Wagner, J L Ferracane
1Department of Biomaterials and Biomechanics, Oregon Health Sciences University, Portland.
American Journal of Dentistry
|October 1, 1994
Summary
The Concept inlay system shows good marginal fit in most dental cavity preparations. Some margins, particularly in MOD cavities, had slightly larger gaps but overall restorations fit well.
Area of Science:
- Restorative Dentistry
- Dental Materials Science
- Biomaterials
Background:
- Accurate marginal fit of dental restorations is crucial for long-term success and preventing secondary caries.
- Composite inlay systems offer a conservative alternative to full coverage restorations.
- Evaluating the clinical performance of new inlay systems is essential.
Purpose of the Study:
- To assess the marginal fit of the Concept inlay system.
- To evaluate fit in three clinically relevant cavity preparations: occlusal, mesio-occlusal (MO), and mesio-occluso-distal (MOD).
Main Methods:
- Concept inlays were fabricated and adjusted.
- Inlays were seated on master dies.
- Marginal discrepancies were measured and evaluated.
Main Results:
- Most margins showed gaps within the 20-45 micron range.
- The distal margin of MO and buccal/lingual margins of MOD preparations exhibited larger discrepancies (approx. 80 and 70 microns, respectively).
- These larger gaps were statistically significant compared to the 20-45 micron range.
Conclusions:
- The heat and pressure-cured composite inlay system demonstrates a generally close marginal fit.
- Minor discrepancies were observed in specific margins, particularly in MOD preparations.
- The system is capable of producing reasonably well-fitting restorations for clinical use.