Class 5 composite resin restorations: margin configurations and the distance from the CEJ.
In: Operative dentistry, Jg. 18 (1993-11-01), Heft 6, S. 246-50
academicJournal
Zugriff:
An in vitro study of 60 teeth examined the cervical microleakage of class 5 composite resin restorations in regard to preparation design and location from the cementoenamel junction (CEJ). Four groups of 15 teeth each were prepared for a class 5 composite resin restoration with the cervical margins finished as follows: a butt joint margin placed less than 1 mm from the CEJ, a beveled margin placed less than 1 mm from the CEJ, a butt joint placed greater than 1.5 mm from the CEJ, and a beveled margin placed greater than 1.5 mm from the CEJ. The teeth were acid etched, treated with an enamel bonding agent, and restored with a microfilled composite resin, and then sectioned for further analysis. The sectioned specimens were evaluated for cervical microleakage by Ca45 autoradiography. The butt joint margins placed less than 1 mm from the CEJ had significantly more microleakage than the other groups, indicating that all enamel margins of a class 5 composite resin restoration should be beveled to decrease microleakage regardless of their location relative to the cementoenamel junction.
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Class 5 composite resin restorations: margin configurations and the distance from the CEJ.
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Autor/in / Beteiligte Person: | Hall, LH ; Cochran, MA ; Swartz, ML |
Zeitschrift: | Operative dentistry, Jg. 18 (1993-11-01), Heft 6, S. 246-50 |
Veröffentlichung: | Seattle, Univ. of Washington, School of Dentistry., 1993 |
Medientyp: | academicJournal |
ISSN: | 0361-7734 (print) |
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