Abstract | OBJECTIVES: This ongoing prospective study evaluates the clinical performance of an ORMOCER restorative material (Definite; Degussa) in combination with a self-conditioning adhesive ( Etch & Prime 3.0; Degussa). METHOD AND MATERIALS: Three hundred fifty-six restorations (48 Class I, 150 Class II, 63 Class III, 32 Class IV, and 63 Class V) in 117 patients (17 to 65 years) were placed by 5 operators at 5 centers. Fillings were placed with cotton roll isolation using clear matrix bands for Classes III and IV and metal matrix bands for Class II restorations. Follow-ups took place after 6, 12, and 24 months whereby modified Ryge criteria were recorded. With 33 randomly selected Class I and II restorations, measurements of occlusal wear (3-dimensional laser scanner) and marginal analyses (scanning electron microscope) were done using replicas. RESULTS: At 24 months, 307 restorations were available for evaluation. The cumulative number of losses in the 5 cavity classes (I, II, III, IV, and V) and the percentages of scores for the clinical parameters in the 4 categories (Alfa, Beta, Charlie, and Delta) of the retained restorations were loss (1/ 6/ -/ 2/ 7), marginal integrity (93.1/ 6.9/-/-), marginal discoloration (73.5/ 25.5/ 1/ -), anatomic form (82.8/17.2/-/-), and fracture (93.1/ 6.9/-/ -). Marginal analysis showed 48.7% "continuous margin" initially and 13.2% at 24 months (difference statistically significant, a = 0.05). Occlusal wear at 24 months was 12.3 Microm for premolars and 21.4 Microm for molars. CONCLUSIONS: The overall clinical performance of the ORMOCER restorative over 24 months was acceptable with concerns related to marginal quality and to retention of Class V restorations.
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Authors | Michael Rosin, Christian Schwahn, Bernd Kordass, Corinna Konschake, Uwe Greese, Dirk Teichmann, Axel Hartmann, Georg Meyer |
Journal | Quintessence international (Berlin, Germany : 1985)
(Quintessence Int)
Vol. 38
Issue 6
Pg. e306-15
(Jun 2007)
ISSN: 1936-7163 [Electronic] Germany |
PMID | 17625618
(Publication Type: Evaluation Study, Journal Article, Multicenter Study, Research Support, Non-U.S. Gov't)
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Chemical References |
- Dental Materials
- Organically Modified Ceramics
- Silanes
|
Topics |
- Adolescent
- Adult
- Aged
- Ceramics
(chemistry)
- Dental Marginal Adaptation
- Dental Materials
(chemistry)
- Dental Prosthesis Retention
(statistics & numerical data)
- Dental Restoration Failure
- Dental Restoration Wear
(statistics & numerical data)
- Humans
- Lasers
- Middle Aged
- Organically Modified Ceramics
- Prospective Studies
- Silanes
(chemistry)
- Statistics, Nonparametric
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