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Publication year
2007Source
Dental Materials, 23, 1, (2007), pp. 2-8ISSN
Publication type
Article / Letter to editor
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Organization
Preventative Restorative Dentistry
Oral Function and Prosthetic Dentistry
Journal title
Dental Materials
Volume
vol. 23
Issue
iss. 1
Page start
p. 2
Page end
p. 8
Subject
NCEBP 7: Effective primary care and public health; UMCN 4.3: Tissue engineering and reconstructive surgeryAbstract
OBJECTIVES: The purpose of this study was to evaluate retrospectively the longevity of class I and II amalgam and composite resin restorations placed in a general practice. METHODS: Patient records of a general practice were used for collecting the data for this study. From the files longevity and reasons for failure of 2867 class I and II amalgam and composite resin restorations placed in 621 patients by two operators between 1990 and 1997 were recorded in 2002. RESULTS: 912 amalgam restorations (502 by operator 1 and 410 by operator 2) and 1955 posterior composite resin restorations (1470 by operator 1 and 485 by operator 2) were placed. One hundred and eighty-two amalgam and 259 posterior composite resin restorations failed during the observation period. The main reasons for failure of the restorations were caries (34%), endodontic treatment (12%) and fracture of the tooth (13%). Life tables calculated from the data reveal a survival for composite resin of 91.7% at 5 years and 82.2% at 10 years. For amalgam the survival is 89.6% at 5 years and 79.2% at 10 years. Cox-regression analysis resulted in a significant effect of the amount of restored surfaces on the survival of the restorations. No significant effect of operator, material as well as combination of material and operator was found. SIGNIFICANCE: In the investigated general practice, two dentists obtained comparable longevity for amalgam and composite resin restorations.
This item appears in the following Collection(s)
- Academic publications [238586]
- Electronic publications [122839]
- Faculty of Medical Sciences [90409]
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