الفهرس 
Physical Properties of MTAOnly 14 pages are availabe for public view
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Abstract
Perforations of the furcation of multi-rooted teeth are critical areas.They are especially troublesome as the inflammatory process may cause rapid and extensive destruction of the periodontal tissues that ultimately leads to a permanent communication with the oral cavity and a persistently suppurating lesion. Numerous materials have been recommended for the repair of this defect but none of them has been able to predictably reestablish the normal architecture in the perforated furcations. The inadequancy of these old repair materials can be attributed either to their inability to seal off the communication between the oral cavity and the underly biocompatibility.