Purpose: to present a series of cases with longer follow-up demonstrating the response of periradicular tissues to MTA when used to repair root perforations in humans.
N= 16 cases
•A list of all of the perforation repairs completed with MTA at an endodontic residency program was obtained.
•Inclusion criteria: presence of a root perforation that had been repaired with MTA with accompanying radiographs documenting the tooth at the time of treatment and a minimum of 1 year of postoperative follow-up. •The size and location of the perforations and the existence and type of a final restoration were noted.
•Pretreatment, immediate posttreatment, and at least 1 year follow-up radiographs were evaluated in a double-blind manner .
•The results were recorded as presence or absence of a periradicular lesion. •A lesion was defined as any radiolucency adjacent to the repair site exceeding double the width of a normal periodontal ligament space. •Periodontal pocket measurements were noted from the follow-up examination.
Most highlighted Results: •Seven of these patients presented with radiolucent lesions at the time of repair . •All of the cases with evidence of preoperative radiolucency demonstrated resolution at the follow-up appointment.
MTA provides an effective seal of root perforations and shows promise in improving the prognosis of perforated teeth that would otherwise be compromised.