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An Analysis of the Temporomandibular Joint Range of Motion and Related Factors in Children and Adolescents

 YounJung Park  ;  Taeyang Lee  ;  Minkyeong Seog  ;  Seong-Oh Kim  ;  Joohee Kim  ;  Jeong-Seung Kwon  ;  Chung-Min Kang 
 CHILDREN-BASEL, Vol.8(6) : 515, 2021-06 
Journal Title
Issue Date
adolescent ; child ; maximum mouth opening ; range of motion
This study was designed to establish safe guidelines for pediatric dental practice regarding temporomandibular joint (TMJ) range of motion (ROM) and mouth area (MA). A total of 438 children aged 3-15 years old of homogenous ethnicity participated in the study; the distribution of participants was approximately equal (sex; n = 15; age, n = 30). Maximum mouth opening (MMO), body height, weight, and age of each participant were recorded, and the TMJ ROM including anterior and lateral movements, MA, and mouth width were documented. Males showed higher mouth width, MMO, and MA values than females. MMO and MA increased with age, height, and weight in a statistically significant manner. MMO of 40 mm is reached by the age of 5.2 years, at a height of 105.9 cm and a weight of 18.6 kg. MMO showed a moderate correlation with age, height, weight, and mouth width, and MA moderately correlated with mouth width. Anterior and lateral movements did not show any close relation to these aforementioned factors. The findings of this study suggest that forcible mouth opening over 40 mm should be more cautiously considered, especially in children shorter than 105 cm, lighter than 18 kg and in children under 5 years old.
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Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Orofacial Pain and Oral Medicine (구강내과학교실) > 1. Journal Papers
2. College of Dentistry (치과대학) > Dept. of Pediatric Dentistry (소아치과학교실) > 1. Journal Papers
Yonsei Authors
Kang, Chung Min(강정민) ORCID logo https://orcid.org/0000-0001-7813-3741
Kwon, Jeong Seung(권정승) ORCID logo https://orcid.org/0000-0003-4584-7355
Kim, Seong Oh(김성오) ORCID logo https://orcid.org/0000-0002-8620-1377
Park, Youn-Jung(박연정) ORCID logo https://orcid.org/0000-0002-9152-7849
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