Incidence of Endodontic Implantitis and Implant Endodontitis Occurring with Single-tooth Implants: A Retrospective Study

By Laird B, DDS, Hermsen M, Gound T, Al Salleeh F, Byarlay M, Vogt M and Marx D

Date: 09/2009
Journal: JOE


Purpose: to determine success and survival rates for implants and teeth adjacent to implants and the incidence of endodontic implantitis (E-I) and implant endodontitis (I-E) 

N= 233 single-tooth implants


1.Sigle tooth implants having a minimum 9-month recall with an acceptable postimplant placement radiograph and recall-visit radiograph. (2000-2005) 2.Subjects who had implant removal or surgical intervention or endodontic involvement of adjacent teeth before the 9-month recall.

For comparison:  (group A, implants with no adjacent teeth)

(group B, implants with adjacent teeth that did not have endodontic treatment)

   (group C, implants with adjacent teeth that had endodontic treatment)

•All pre- and postoperative radiographs in group C were filed in folders for further evaluation.

•All these radio- graphs were read by three endodontists (assigning PAI scores to each tooth).

•All failures were further analyzed by the three calibrated evaluators to estimate the probability that I-E or E-I was involved in the failure.

Most highlighted Results:  

1.Table 1.

2.None of the implant survival rates were statistically different.

3.None of the implants or adjacent teeth in group B were considered to have E-I or I-E, one of the implants in group C had E-I and two of the adjacent teeth may have had I-E.

Clinical significance:

•Endodontically treated teeth adjacent to single-tooth implants are usually successful and should be maintained.