Abstract
Resin cements are often used for single crown cementation due to their physical properties. Self-adhesive resin cements gained widespread due to their simplified technique compared to regular resin cement. However, there is lacking clinical evidence about the long-term behavior of this material. The aim of this prospective clinical trial was to assess the survival rates of metal-ceramic crowns cemented with self-adhesive resin cement up to six years. One hundred and twenty-nine subjects received 152 metal-ceramic crowns. The cementation procedures were standardized and performed by previously trained operators. The crowns were assessed as to primary outcome (debonding) and FDI criteria. Statistical analysis was performed using Kaplan-Meier statistics and descriptive analysis. Three failures occurred (debonding), resulting in a 97.6% survival rate. FDI criteria assessment resulted in scores 1 and 2 (acceptable clinical evaluation) for all surviving crowns. The use of self-adhesive resin cement is a feasible alternative for metal-ceramic crowns cementation, achieving high and adequate survival rates.
Highlights
The placement of a metal-ceramic crown is an established restorative option in dentistry for the restoration of vital and/or endodontically treated teeth based on its combination of strength and esthetics[1]
This study was a multicenter prospective clinical trial wherein crowns cemented with self-adhesive resin cement were evaluated
Failures By the final analysis, three crowns had failed, two of which were situated in the anterior region and one of which was situated in the pre-molar region (Figure 1); there was not a statistically significant difference in crown failure relative to tooth location
Summary
The placement of a metal-ceramic crown is an established restorative option in dentistry for the restoration of vital and/or endodontically treated teeth based on its combination of strength (metal) and esthetics (porcelain)[1] This type of restoration functions desirably, with a 5-year survival estimate of 95.6%2. Zinc phosphate cement was used in dentistry as the gold standard for cementation procedures, as it showed good clinical performance even after 10 years[6,7]. It included some negative characteristics, such as high solubility, pulp irritation, and microleakage[3].
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