Association between periodontitis and temporomandibular joint disorders

Abstract Background Periodontitis (PD) may affect temporomandibular joint disorders (TMD) and TMD may influence PD in previous observational studies. Nevertheless, these studies were prone to confounders and reverse causation, leading to incorrect conclusions about causality and direction of associa...

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Main Authors: Shaotai Wang, Huan Jiang, Huichuan Qi, Danfeng Luo, Tianyuan Qiu, Min Hu
Format: Article
Language:English
Published: BMC 2023-08-01
Series:Arthritis Research & Therapy
Subjects:
Online Access:https://doi.org/10.1186/s13075-023-03129-0
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author Shaotai Wang
Huan Jiang
Huichuan Qi
Danfeng Luo
Tianyuan Qiu
Min Hu
author_facet Shaotai Wang
Huan Jiang
Huichuan Qi
Danfeng Luo
Tianyuan Qiu
Min Hu
author_sort Shaotai Wang
collection DOAJ
description Abstract Background Periodontitis (PD) may affect temporomandibular joint disorders (TMD) and TMD may influence PD in previous observational studies. Nevertheless, these studies were prone to confounders and reverse causation, leading to incorrect conclusions about causality and direction of association. This research investigates the associations between PD and TMD employing bidirectional two-sample Mendelian randomization (MR) analysis. Methods Single-nucleotide polymorphisms (SNPs) related to PD (p < 5 × 10−6) were selected from a genome-wide association study (GWAS) from the Gene-Lifestyle Interaction in the Dental Endpoints (GLIDE) consortium, and related these to SNPs from FinnGen and UK Biobank (UKB) consortia, and vice versa. We implemented the standard inverse variance weighted (IVW), weighted median (WM), MR-Egger regression, and MR-PRESSO methods to estimate the potential causality between PD and TMD. Sensitive tests were conducted using robust MR methods. Results from FinnGen and UKB were combined using the fixed model. Results PD did not appear to causally affect TMD. Additionally, the reverse MR analysis did not reveal a significant causal effect of TMD on PD. The results of other MR methods were similar to those of the IVW method. Sensitivity analyses addressed no potential pleiotropy in MR estimations. Results from the meta-analysis were consistent with the above-mentioned consequences. Conclusion This research does not support a causal relationship between PD and TMD. PD does not appear to worsen TMD directly, and vice versa.
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spelling doaj.art-f35bcd42c8df442ebf7e238eec7014bb2023-11-26T13:54:49ZengBMCArthritis Research & Therapy1478-63622023-08-012511610.1186/s13075-023-03129-0Association between periodontitis and temporomandibular joint disordersShaotai Wang0Huan Jiang1Huichuan Qi2Danfeng Luo3Tianyuan Qiu4Min Hu5Department of Orthodontics, Hospital of Stomatology, Jilin UniversityDepartment of Orthodontics, Hospital of Stomatology, Jilin UniversityDepartment of Orthodontics, Hospital of Stomatology, Jilin UniversityDepartment of Orthodontics, Hospital of Stomatology, Jilin UniversityDepartment of Orthodontics, Hospital of Stomatology, Jilin UniversityDepartment of Orthodontics, Hospital of Stomatology, Jilin UniversityAbstract Background Periodontitis (PD) may affect temporomandibular joint disorders (TMD) and TMD may influence PD in previous observational studies. Nevertheless, these studies were prone to confounders and reverse causation, leading to incorrect conclusions about causality and direction of association. This research investigates the associations between PD and TMD employing bidirectional two-sample Mendelian randomization (MR) analysis. Methods Single-nucleotide polymorphisms (SNPs) related to PD (p < 5 × 10−6) were selected from a genome-wide association study (GWAS) from the Gene-Lifestyle Interaction in the Dental Endpoints (GLIDE) consortium, and related these to SNPs from FinnGen and UK Biobank (UKB) consortia, and vice versa. We implemented the standard inverse variance weighted (IVW), weighted median (WM), MR-Egger regression, and MR-PRESSO methods to estimate the potential causality between PD and TMD. Sensitive tests were conducted using robust MR methods. Results from FinnGen and UKB were combined using the fixed model. Results PD did not appear to causally affect TMD. Additionally, the reverse MR analysis did not reveal a significant causal effect of TMD on PD. The results of other MR methods were similar to those of the IVW method. Sensitivity analyses addressed no potential pleiotropy in MR estimations. Results from the meta-analysis were consistent with the above-mentioned consequences. Conclusion This research does not support a causal relationship between PD and TMD. PD does not appear to worsen TMD directly, and vice versa.https://doi.org/10.1186/s13075-023-03129-0PeriodontitisTemporomandibular joint disordersMendelian randomization
spellingShingle Shaotai Wang
Huan Jiang
Huichuan Qi
Danfeng Luo
Tianyuan Qiu
Min Hu
Association between periodontitis and temporomandibular joint disorders
Arthritis Research & Therapy
Periodontitis
Temporomandibular joint disorders
Mendelian randomization
title Association between periodontitis and temporomandibular joint disorders
title_full Association between periodontitis and temporomandibular joint disorders
title_fullStr Association between periodontitis and temporomandibular joint disorders
title_full_unstemmed Association between periodontitis and temporomandibular joint disorders
title_short Association between periodontitis and temporomandibular joint disorders
title_sort association between periodontitis and temporomandibular joint disorders
topic Periodontitis
Temporomandibular joint disorders
Mendelian randomization
url https://doi.org/10.1186/s13075-023-03129-0
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