An evaluation of the use of amalgam, Cavit, and calcium hydroxide in the repair of furcation perforations

By ElDeeb M, Eldeeb M, Tabibi A, Jensen J

Date: 01/1982
Journal: JOE

Purpose:

Materials/Methods:

N=4 dogs with healthy periodontium.

-maxillary and mandibular premolar/molars; 64 perforations made.

-Performed under general anesthesia, rubber dam placed and accesses made, Cleaned and shaped with sterile saline and obturated with Cavit.

-#4 round bur used to perforate the furcation which was then rinsed with sterile saline. Heme controlled with racellets.

-4 equal groups of perforation repair materials used: amalgam, cavit, CaOH, and nothing (cotton pellet).

-occlusal amalgams placed and 3 month observation occurred clinically and xray; sacrificed dogs and histo

exam.

Results:

-possible role of bacterial contamination not investigated.

-tissue responds best in the following order:  amalgam>cavit>CaOH>nothing.

-most bone resorption and clinical exposure of furcal areas occurs within first 1-2 months and then slows.

-cavit and amalgam had a similar inflammatory response, much less than CaOH.

Clinical Significance:

Attempting to repair a perforation better than no repair.  The use of CAOH for 1 month or more results in more periodontal destruction.  Amalgam is better than Cavit for repairs.