Treatment Outcome of Mineral Trioxide Aggregate: Repair of Root Perforations

By Mente J, Hage N, Pfefferle T, Koch MJ, Geletneky B, Dreyhaupt J, Martin N, Staehle HJ.

Date: 04/2011
Journal: JOE

Purpose: to evaluate endodontically treated teeth with root perforations which were repaired exclusively with MTA, in order to determine MTA treatment success 

N= 21 teeth 


•Root perforation repaired using MTA with at least 1 year between tx and follow up included

•Teeth had been treated using RD and conventional RCT

Repair process: defect carefully irrigated and dried if necessary, MTA applied to the site when bleeding controlled, obturation (cold lateral, WV and injectable GP)

•Pre- and intraoperative information pertaining to clinical variables were gathered.

•Follow-up examinations performed at different time intervals ranging from 12 to 65 months after treatment, with a median follow-up period of 33 months. PAI score assessed.

•A case was classified as ‘‘healed’’- No indication of apical periodontitis (PAI <2), no radiolucency adjacent to the perforation site, no continuing root resorption, no clinical signs and symptoms, and no loss of function. Outcome was classified as ‘‘diseased’’- clinical signs and symptoms, apical periodontitis (PAI >3), radiolucency adjacent to the perforation site, or signs of continuing root resorption. 

None of the treating dentists were endodontists

Most highlighted Results:  

•An overall rate of 86% healed. 

•Differences were recorded relating the outcome to the recorded pre, intra, and postoperative variables but were none significant.  (Fig.)

Clinical significance:

MTA provide a biocompatible and long- term effective seal for root perforations in all parts of the root.