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VOLUME 18 , ISSUE 5 ( May, 2017 ) > List of Articles


Apical Periodontitis and Endodontic Treatment in Patients with Type II Diabetes Mellitus: Comparative Cross-sectional Survey

Leena Alsomadi

Citation Information : Alsomadi L. Apical Periodontitis and Endodontic Treatment in Patients with Type II Diabetes Mellitus: Comparative Cross-sectional Survey. J Contemp Dent Pract 2017; 18 (5):358-362.

DOI: 10.5005/jp-journals-10024-2046

Published Online: 01-08-2017

Copyright Statement:  Copyright © 2017; The Author(s).



The aims of this study were to investigate the prevalence of apical periodontitis (AP) in diabetes mellitus (DM) patients compared with nondiabetic patients and to examine the effect of glycemic control on the prevalence of AP.

Materials and methods

Radiographs of a group of DM patients were compared with those of a matched nondiabetic group to identify AP. The diabetic group was subdivided according to the level of glycemic control into two subgroups: A well-controlled DM and a poorly controlled DM. The periapical index score was used to assess the periapical status. All groups were compared in regard to the presence of AP lesions, the number of endodontically treated teeth (ET), and the percentage of failure of endodontically treated teeth (AP/ET ratio). Statistical Package for the Social Sciences (SPSS version 20.0, Chicago, Illinois, USA) was used for all the analyses; p ≤ 0.05 was considered as statistically significant.


The prevalence of AP was higher in diabetic group than in the nondiabetic group (13.5 vs 11.9% respectively). Diabetic group had more teeth with endodontic treatment ET compared with nondiabetic group (4.18 vs 1.82% respectively); this difference was statistically significant (p = 0.001) along with higher AP/ET ratio (27.7 vs 19.3 respectively). The poorly controlled DM group had a higher prevalence of AP lesions compared with the well-controlled DM group (18.29 vs 9.21 respectively). This difference was statistically significant (p = 0.001); they also had a higher percentage of ET (5.55 vs 3.13% respectively) and AP/ ET ratio (32.0 vs 21.8% respectively).


This survey demonstrates a higher prevalence of AP in DM patients compared with nondiabetic group, with an increased prevalence of persistent chronic AP. Compared with a well-controlled diabetic group, a poor glycemic control may be associated with a higher prevalence of AP and increased rate of endodontic failures.

Clinical significance

Counseling diabetic patients, particularly those with poor glycemic control, about the risk of failure of endodontic treatment can be part of planning management, which could include refereeing diabetic patients who need endodontic treatment for consultant care.

How to cite this article

Smadi L. Apical Periodontitis and Endodontic Treatment in Patients with Type II Diabetes Mellitus: Comparative Cross-sectional Survey. J Contemp Dent Pract 2017;18(5):358-362.

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