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Is there a relationship between the presence of external root resorption in second molars adjacent to impacted mandibular third molars with awake bruxism and masticatory muscle activity?
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Journal Article
Is there a relationship between the presence of external root resorption in second molars adjacent to impacted mandibular third molars with awake bruxism and masticatory muscle activity?
2024
Overview
Objectives
This study aimed to assess whether awake bruxism and masticatory muscle activity could be related to external root resorption (ERR) in second molars adjacent to impacted mandibular third molars.
Materials and methods
Sixty patients, with requests for a cone-beam, computed tomography, were divided into two groups: ERR (patients with ERR in the second molar,
n
= 30), and control group (
n
= 30). Awake bruxism was assessed through the Oral Behaviors Checklist (OBC) and an ecological momentary assessment (EMA). Surface electromyography (EMG) was used to assess the masseter and anterior temporal muscle function. Normality and homogeneity of variances were demonstrated. Descriptive analysis was performed, using the T-test and Chi-square test to compare the characteristics of the groups. A multiple regression model was performed.
Results
The ERR group presented more non-functional oral activities related to awake bruxism than the control group, according to OBC (
p
= 0.027) and EMA (
p
= 0.035). In addition, the ERR group had higher EMG activity than the control group in rest and isotonic protocols (
p
< 0.05).
Conclusions
Awake bruxism and greater masticatory muscle activity seem to be related to the presence of ERR in second molars adjacent to impacted mandibular third molars.
Clinical relevance
The results of the present study can reinforce the theory that triggering ERR in the second molars adjacent to impacted mandibular third molars may be related to mechanical forces coming from the masticatory function.
Publisher
Springer Berlin Heidelberg,Springer Nature B.V
Subject
/ Cone-Beam Computed Tomography
/ Female
/ Humans
/ Male
/ Mandible
/ Mandible - diagnostic imaging
/ Masticatory Muscles - physiopathology
/ Medicine
/ Molar, Third - diagnostic imaging
/ Molar, Third - physiopathology
/ Molars
/ Root Resorption - diagnostic imaging
/ Root Resorption - physiopathology
/ Teeth
