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Effects of Periodontal Treatment on Glycated Hemoglobin A Levels in Patients with Type 2 Diabetes: A Meta-Analysis of Randomized Clinical Trials
J Dent Hyg Sci 2018;18:137-46
Published online June 30, 2018;  https://doi.org/10.17135/jdhs.2018.18.3.137
© 2018 Korean Society of Dental Hygiene Science.

So-Hyun Son and Eun-Sun Lee1,†

Department of Dental Hygiene, Shingu College, Seongnam 13174,
1Department of Dental Hygiene, Kyungbok University, Pocheon 11138, Korea
Correspondence to: Eun-Sun Lee
Department of Dental Hygiene, Kyungbok University, 154 Sinpyeong-ro, Sinbuk-myeon, Pocheon 11138, Korea
Tel: +82-31-531-9901, Fax: +82-31-531-9908, E-mail: charity34@hanmail.net, ORCID: https://orcid.org/0000-0002-3431-3932
Received March 14, 2018; Revised April 16, 2018; Accepted May 10, 2018.
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
This systematic review aimed to investigate the effects of periodontal treatment on glycated hemoglobin A (HbA1c) levels in patients with type 2 diabetes who develop periodontal disease. The search of the MEDLINE, Embase, CINAHL, and Cochrane Library databases was completed on April 8, 2018. The study design was based on randomized clinical trials. Scaling and root planing was performed for the test group, whereas no periodontal treatment or simple oral training was performed for the control group. The main outcome variable was the change in HbA1c levels. We used the Review Manager statistical analysis software for the quantitative analysis of selected documents. Meta-analysis was performed using the inverse variance estimation method of the fixed-effect model to estimate the effects of periodontal treatment on HbA1c levels in patients with type 2 diabetes. A total of 1,011 documents were searched using search strategies, and 10 documents were included in the meta-analysis. The meta-analysis of the selected literature showed that periodontal treatment significantly reduced the HbA1c levels in patients with type 2 diabetes who develop periodontal disease (mean difference, −0.34; 95% confidence interval, −0.43 to –0.26; p<0.001). This study aimed to investigate the effects of periodontal treatment on HbA1c levels, which can be used as a basis for the increasing management of diabetic complications. To improve the quality of life and reduce the burden of medical expenses for patients with diabetes, periodontal disease management through nonsurgical periodontal treatment, such as scaling and root planing, is necessary.
Keywords : Dental scaling, Glycated hemoglobin A, Meta-analysis, Periodontal diseases, Type 2 diabetes mellitus


June 2018, 18 (3)
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