PMID: 6991677Jan 1, 1980Paper

Microleakage of composite resin and amalgam core material under complete cast crowns

The Journal of Prosthetic Dentistry
T D Larson, J R Jensen

Abstract

Ninety extracted human teeth were used to compare the microleakage of composite resin over, amalgam core, and regular crown preparations under a complete cast gold crown cemented with zinc phosphate cement as determined by 2% fluorescein dye solution. Specimens were compared with and without aging after cementation in a thermal bath by cycling some of them between 4 degrees C and 60 degrees C in a 2% fluorescein dye bath and others in a similar bath held at 37 degrees C. Fluorescein dye (under ultraviolet light) demonstrated microleakage of the specimens between the crown-tooth interface and the core-tooth interface. There were no significant differences in the microleakage due to aging. The specimens held at 37 degrees C in the fluorescein dye bath showed no significant differences between the core preparations and the regular crown preparations. However, when specimens were thermally cycled between 4 degrees C and 60 degrees C, there were significant differences. With thermal cycling, the regular crown preparations were better able to resist microleakage at the crown-tooth interface than either the composite resin core or the amalgam core preparations. The results of this investigation seem to indicate a need for further eval...Continue Reading

Citations

Jul 17, 2013·Journal of Indian Prosthodontic Society·Sudhir BhandariVidya Chitre
May 12, 2010·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·Ali Abdullah Alwan Al-Maqtari, Joo Loon Lui
Apr 14, 2020·Clinical, Cosmetic and Investigational Dentistry·Mohamed A QudaihAhmed Mohamed Elmarakby
Jan 1, 1987·International Endodontic Journal·A N Stokes
Mar 1, 1994·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·P S Lund, L R Wilcox
Mar 1, 1983·Journal of Dentistry
Jul 3, 2021·BioMed Research International·T A Bakhsh, A Turkistani

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