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Class I and II composite resin restorations: 4-year clinical follow up
1Department of Pedodontics, Postgraduate Dental Education Center, Orebro, Sweden.
Swedish Dental Journal
|January 1, 1989
Abstract:
The clinical properties and longevity of two posterior composite materials were studied during a 4-year period. 137 Class I and II restorations in 65 patients were evaluated directly using USPHS criteria. Araldite casts were used to categorize quantitatively the amount of occlusal wear according to the Leinfelder method. No differences could be found between the two materials regarding clinical properties and failure rate. The overall success rate was high (84%). The average occlusal deterioration after 4 years was about 140 microns.