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Marginal Fit Metal-Ceramic and In-Ceram Single Crown Cement retained in Implant-supported Abutments
Valdimar S Valente1, Carlos E Francischone2, C D Vilarinho Soares de Moura1
1Department of Prosthodontics and Restorative Dentistry Federal University of Piaui (UFPI), Teresina, Piaui, Brazil.
The Journal of Contemporary Dental Practice
|December 15, 2016
Summary
The cementing procedure negatively impacts the marginal fit of implant-supported crowns. Metal-ceramic crowns offer superior cervical adaptation compared to In-Ceram crowns, crucial for restoration longevity.
Area of Science:
- Dental materials science
- Prosthodontics
- Biomaterials engineering
Background:
- Cervical fit of implant-supported crowns is critical for gum health and restoration longevity.
- Evaluating the impact of cementation on marginal adaptation is essential for clinical success.
Purpose of the Study:
- To assess the cervical fit of metal-ceramic and In-Ceram implant-supported crowns.
- To compare the marginal adaptation before and after cementation.
Main Methods:
- Twenty implant-supported crowns (10 metal-ceramic, 10 In-Ceram) were evaluated.
- Marginal adaptation was measured using a comparison microscope (±1 μm) before and after cementation with zinc phosphate cement.
Main Results:
- Cervical misalignment increased after cementation for both crown types.
- Metal-ceramic crowns demonstrated significantly better marginal adaptation than In-Ceram crowns, both pre- and post-cementation.
Conclusions:
- The cementation process adversely affects the marginal fit of implant-supported crowns.
- Metal-ceramic crowns provide superior marginal adaptation compared to In-Ceram crowns.
- Maintaining marginal integrity is vital for long-term prosthetic success and periodontal health.
