Association between the Temporomandibular Joint Morphology and Chewing Pattern.

Diagnostics (Basel)

Department of Orthodontic Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8510, Japan.

Published: June 2023

AI Article Synopsis

  • The study explored the relationship between the structure of the temporomandibular joint (TMJ) and different chewing patterns while taking into account factors like skeletal morphology, age, sex, and symptoms of temporomandibular disorder (TMD).
  • A total of 102 TMJs from 80 patients aged 16-40 were analyzed using advanced imaging and patient records, with linear regression analyses identifying correlations between TMJ morphology and chewing styles.
  • Results showed that specific measurements of the mandibular condyle's shape were significantly linked to chewing patterns, indicating that TMJ morphology may influence both skeletal structure and chewing function.

Article Abstract

This study aimed to investigate whether the morphology of the temporomandibular joint (TMJ) is associated with chewing patterns while considering skeletal morphology, sex, age, and symptoms of temporomandibular disorder (TMD). A cross-sectional observational study of 102 TMJs of 80 patients (age 16-40 years) was performed using pretreatment records of cone-beam computed tomography imaging of the TMJ, mandibular kinesiographic records of gum chewing, lateral and posteroanterior cephalometric radiographs, patient history, and pretreatment questionnaires. To select appropriate TMJ measurements, linear regression analyses were performed using TMJ measurements as dependent variables and chewing patterns as the independent variable with adjustment for other covariates, including Nasion-B plane (SNB) angle, Frankfort-mandibular plane angle (FMA), amount of lateral mandibular shift, sex, age, and symptoms of TMD. In multiple linear regression models adjusted for other covariates, the length of the horizontal short axis of the condyle and radius of the condyle at 135° from the medial pole were significantly ( < 0.05) associated with the chewing patterns in the frontal plane on the working side. "Non-bilateral grinding" displayed a more rounded shape of the mandibular condyle. Conversely, "bilateral grinding" exhibited a flatter shape in the anteroposterior aspect. These findings suggest that the mandibular condyle morphology might be related to skeletal and masticatory function, including chewing patterns.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10340140PMC
http://dx.doi.org/10.3390/diagnostics13132177DOI Listing

Publication Analysis

Top Keywords

chewing patterns
16
temporomandibular joint
8
associated chewing
8
sex age
8
age symptoms
8
tmj measurements
8
linear regression
8
mandibular condyle
8
chewing
6
association temporomandibular
4

Similar Publications

Phytobezoars are indigestible organic matter that forms organized masses in the gastrointestinal tract. Seeds reported causing bezoars include sunflower seeds, watermelon seeds, and wild banana seeds. Cocoa seeds causing bezoar have not been reported.

View Article and Find Full Text PDF

Purpose: to characterize mastication and electrical activation of the masseter and anterior temporalis muscles in children and adolescents with osteogenesis imperfecta (OI), and relate results to guided occlusion and occlusal interference.

Methods: This observational, analytical cross-sectional study included 22 subjects divided into mild OI (MOI) (type 1) (n=15) and moderate-to-severe OI (MSOI) (types 3, 4, and 5) (n=7) groups. The Orofacial Myofunctional Evaluation with Scores (OMES) form was used to evaluate the clinical aspects of mastication.

View Article and Find Full Text PDF

Infants' Exposure to Toxic Trace Elements in Teethers.

Biol Trace Elem Res

January 2025

College of Arts & Sciences, American University of Kuwait, P.O. Box 3323, 13034, Safat, Kuwait.

Infants are particularly vulnerable to exposure to toxic trace elements due to their developmental stage and behaviors such as mouthing and chewing on toys. Chemical exposure to heavy metals in infants' toys is a significant concern as it poses a threat to their health and well-being. Therefore, quality control measures are essential to prevent infants' exposure to potentially harmful metals.

View Article and Find Full Text PDF

Background: Although varieties in chewing patterns are essential for the transformation of food in mouth and thereby its sensorial perception, there are few reports that show the effect of chewing frequency on food oral processing and its properties.

Objective: The current study tested whether consciously controlled chewing frequency influences the oral processing of habitually consumed foods and their sensory analysis.

Method: Chewing behaviour was analysed during the mastication of mushed potato samples by 20 participants in two separate test sessions, in which they were instructed to chew the sample in their habitual manner (free chewing test) or follow a preprogrammed video animation displayed on a screen, wich guided them to maintain a constant chewing frequency (F-const chewing test).

View Article and Find Full Text PDF

Associations of lifestyle factors with oral cancer risk: An umbrella review.

J Stomatol Oral Maxillofac Surg

January 2025

Department of Gastrointestinal Surgery, Second Affiliated Hospital of Kunming Medical University / Second Faculty of Clinical Medicine, Kunming Medical University, Kunming 650101, China.

Background: Oral cancer is a common head and neck cancer malignancy that seriously affects patients' quality of life and increases the health care burden. Moreover, there is a lack of comprehensive reviews of previous research on factors associated with oral cancer. The aim of the current umbrella review was to provide a comprehensive and systematic summary of relevant studies, to grade the quality of evidence of relevant studies, and to provide guidance for the prevention of oral cancer.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!