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Clinical Evaluation of Indirect Particle‐Filled Composite Resin CAD/CAM Partial Crowns after 24 Months
Author(s) -
Zimmermann Moritz,
Koller Christina,
Reymus Marcel,
Mehl Albert,
Hickel Reinhard
Publication year - 2018
Publication title -
journal of prosthodontics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.902
H-Index - 60
eISSN - 1532-849X
pISSN - 1059-941X
DOI - 10.1111/jopr.12582
Subject(s) - cerec , wilcoxon signed rank test , dentistry , crown (dentistry) , medicine , composite number , orthodontics , resin composite , cad , materials science , composite material , mann–whitney u test , engineering drawing , engineering , ceramic
Abstract Purpose Resin‐based CAD/CAM compound materials might be promising for single‐tooth restorations. Insufficient clinical data are available for this new material class. The purpose of this study was to describe initial clinical in vivo results for indirect particle‐filled composite resin CAD/CAM restorations after 24 months. Materials and Methods Indirect particle‐filled composite resin restorations were fabricated with a CAD/CAM method (CEREC Bluecam intraoral scanner, CEREC MCXL milling unit) by calibrated dental students. Forty‐two partial crown restorations were seated adhesively in 30 patients with caries lesions or insufficient restorations (baseline). Strict inclusion criteria were defined for the patient collective. Follow‐up evaluation comprised 40 restorations after 12 months and 33 restorations after 24 months. Evaluation criteria were modified FDI criteria with grades (1) to (5). Rating with FDI criteria (5) was defined as clinical failure. Statistical analysis was performed with Wilcoxon‐Test ( p < 0.05). Results The success rate of indirect particle‐filled composite resin CAD/CAM restorations after 12 months was 95.0% with two debondings observed. The cumulative success rate for indirect particle‐filled composite resin CAD/CAM restorations after 24 months was 85.7% with two tooth fractures and one debonding. Statistically significant differences were found for baseline and 24‐month follow‐up evaluation for anatomic form and marginal adaptation criterion examined in respect to FDI criteria guidelines (Wilcoxon‐Test, p < 0.05). Conclusions This study demonstrates particle‐filled composite resin CAD/CAM restorations having a clinical success rate of 85.7% after 24 months. Adhesive bonding procedures need to be ensured carefully. A longer clinical evaluation period is necessary to draw further conclusions.