Three-year clinical performance of a compomer in stress-bearing restorations in permanent posterior teeth.
OBJECTIVE
To evaluate the 3-year clinical performance of the compomer Hytac in Class I and II cavities of permanent posterior teeth.


METHODS
53 restorations were placed in 14 patients. The compomer Hytac was used with the self-etching adhesive Hytac OSB (total bonding) without additional enamel-etching with phosphoric acid according to manufacturer's instructions. Restorations were rated at baseline and 3 years according to modified USPHS criteria in relation to tooth type (molar, premolar), size and class of cavities, isolation type (rubber dam, cotton rolls) and use of a calcium hydroxide liner. After 3 years, 39 restorations (73.6%) were available for examination. Statistical analysis was performed using Mann-Whitney U test and Fisher's exact test.


RESULTS
After 3 years, three restorations failed (7.7%). The success rate was therefore 92.3% with an average annual failure rate of 2.6%. There was no statistically significant difference (P < 0.05) found concerning neither of the USPHS criteria nor the failures between any of the restoration groups.
Department of Restorative Dentistry and Periodontology, Ludwig-Maximilians-University, Dental School, Goethe Street 70, D-80336 Munich, Germany. khuth@dent.med.uni-muenchen.de
Karin Christine
KC
Huth
Jürgen
J
Manhard
Reinhard
R
Hickel
Karl-Heinz
KH
Kunzelmann
D001641:Bicuspid / Q000473:pathology; D002126:Calcium Hydroxide / Q000627:therapeutic use; D020770:Compomers / Q000737:chemistry*; D003188:Composite Resins / Q000737:chemistry*; D032561:Cotton Fiber; D001840:Dental Bonding; D003736:Dental Cavity Lining; D003737:Dental Cavity Preparation / Q000145:classification; D019232:Dental Restoration Failure; D003793:Dental Restoration, Permanent / Q000145:classification / Q000295:instrumentation; D005500:Follow-Up Studies; D005899:Glass Ionomer Cements / Q000737:chemistry*; D006801:Humans; D008963:Molar / Q000473:pathology; D016733:Rubber Dams; D018709:Statistics, Nonparametric; D013314:Stress, Mechanical; D013499:Surface Properties
D020770:Compomers; D003188:Composite Resins; D005899:Glass Ionomer Cements; C105429:hytac; D002126:Calcium Hydroxide