Elsevier

Journal of Endodontics

Volume 25, Issue 3, March 1999, Pages 192-196
Journal of Endodontics

Effect of matrix placement on furcation perforation repair*

https://doi.org/10.1016/S0099-2399(99)80141-1Get rights and content

Furcation perforations are a serious complication during endodontic treatment, and a matrix to aid placement of repair material has been recommended. This study tested the sealing ability of amalgam and Ketac silver placed with and without plaster of Paris as a matrix. A bacterial penetration technique was used to test the seal. Perforations created in the pulpal floor of extracted human mandibular molars were repaired as follows: group 1, amalgam; group 2, amalgam plus plaster as a matrix; group 3, Ketac silver; and group 4, Ketac silver plus plaster (17 teeth/group). Leakage was measured by placing bacteria (Streptococcus sobrinus) in the pulp chamber, and recording the time taken for bacterial growth in a medium bathing the root surface. A plaster of Paris matrix improved the seal with amalgam, but not with Ketac silver. Ketac silver provided the best seal, but all materials showed complete leakage within 22 days.

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*

This study was supported by a grant from Australian Society of Endodontology, Australia.

1

Dr. Jantarat is a postgraduate student, School of Dental Science, University of Melbourne, Victoria, Australia.

2

Dr. Dashper is a research fellow, School of Dental Science, University of Melbourne Victoria, Australia.

3

Dr. Messer is a professor of Restorative Dentistry, School of Dental Science, University of Melbourne Victona, Australia.

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