A 4-year retrospective clinical study of Class I and Class II composite restorations.
OBJECTIVE
The purpose of this study was to determine the longevity and quality of Class I and Class II resin composite (Herculite XR) restorations placed in private practice.


METHODS
One thousand two hundred and nine Class I and Class II composite restorations with margins in enamel were evaluated clinically after periods of between 12 months and 4.5 years in clinical service by two calibrated examiners using a modified version of established criteria.


RESULTS
Of the restorations investigated 94.8% were rated as 'good' (Alpha 79.3%) or 'clinically acceptable' (Bravo 15.5%). Significantly more restorations in premolar teeth were rated as Alpha (82%) than in permanent molar teeth (77%). The survival rate after 4 years was around 87%. The 50% survival-time, calculated by extrapolation according to Weibull, was approximately 9 years.


CONCLUSIONS
It is concluded that the composite investigated is an appropriate material for the restoration of Class I and Class II lesions with margins located in enamel in premolar and permanent molar teeth.
Geurtsen
W
W
Department of Conservative Dentistry and Periodontology, Medical University Hannover, Germany.
Schoeler
U
U
D001641:Bicuspid; D003188:Composite Resins; D003743:Dental Enamel; D018772:Dental Marginal Adaptation; D019232:Dental Restoration Failure; D003793:Dental Restoration, Permanent / Q000145:classification* / Q000379:methods; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008963:Molar; D019279:Resin Cements; D012189:Retrospective Studies; D013499:Surface Properties; D013997:Time Factors
D003188:Composite Resins; D019279:Resin Cements; C065770:Herculite XR