Maximal Mouth Opening in Infants: A Single-Group Prospective Cohort Study.
Journal
Journal of oral and maxillofacial surgery : official journal of the American Association of Oral and Maxillofacial Surgeons
ISSN: 1531-5053
Titre abrégé: J Oral Maxillofac Surg
Pays: United States
ID NLM: 8206428
Informations de publication
Date de publication:
20 Jan 2024
20 Jan 2024
Historique:
received:
01
08
2023
revised:
11
01
2024
accepted:
15
01
2024
medline:
10
2
2024
pubmed:
10
2
2024
entrez:
9
2
2024
Statut:
aheadofprint
Résumé
Detection of mandibular range of motion variations in infants may allow for early diagnosis of pathologic conditions to the temporomandibular joint. The purpose of this study was to determine the normal ranges for maximal mouth opening (MMO) in healthy infants under 12 months of age. A single-group prospective cohort study of consecutive patients below 12 months of age was conducted in an outpatient setting at the Florida Craniofacial Institute in Tampa, Florida. Patients were excluded if they had trismus, presented with signs of obstructive sleep apnea, suffered a facial fracture, or were diagnosed with a craniofacial syndrome. Age (in months) at the time of presentation, measured as a continuous variable. The main outcome variable was MMO. This was measured by placing a thumb and forefinger in the infant's mouth and applies slight pressure to encourage MMO. In older infants with erupted central incisors, MMO was measured from the gingival margins. The covariates were sex, race, and gestational age. Findings were presented as means with 95% confidence intervals. A multivariate linear regression analysis was conducted to evaluate changes in MMO with increasing age. The sample was composed of 151 infants with a mean age of 5.2 months (95% confidence interval [CI] 4.8 to 5.6), and 33% were female. The mean MMO was 32.1 mm (95% CI 31.5 to 32.7). Results of the linear regression analysis showed MMO to significantly increase with increasing age, increasing at a mean rate of approximately 1 mm per month (coefficient 1.06, 95% CI 0.88 to 1.23, P < .001). In neonates <1 month of age, the mean MMO was 22.0 mm (95% CI 20.4 to 23.6), compared to a mean of 36.7 mm (95% CI 34.8 to 38.6) in infants 11 months of age. The results of this study provide normative data of the association of age with MMO, which may be of value in assessing for infants with jaw mobility disorders.
Sections du résumé
BACKGROUND
BACKGROUND
Detection of mandibular range of motion variations in infants may allow for early diagnosis of pathologic conditions to the temporomandibular joint.
PURPOSE
OBJECTIVE
The purpose of this study was to determine the normal ranges for maximal mouth opening (MMO) in healthy infants under 12 months of age.
STUDY DESIGN, SETTING, SAMPLE
UNASSIGNED
A single-group prospective cohort study of consecutive patients below 12 months of age was conducted in an outpatient setting at the Florida Craniofacial Institute in Tampa, Florida. Patients were excluded if they had trismus, presented with signs of obstructive sleep apnea, suffered a facial fracture, or were diagnosed with a craniofacial syndrome.
PREDICTOR/EXPOSURE/INDEPENDENT VARIABLE
UNASSIGNED
Age (in months) at the time of presentation, measured as a continuous variable.
MAIN OUTCOME VARIABLE(S)
UNASSIGNED
The main outcome variable was MMO. This was measured by placing a thumb and forefinger in the infant's mouth and applies slight pressure to encourage MMO. In older infants with erupted central incisors, MMO was measured from the gingival margins.
COVARIATES
UNASSIGNED
The covariates were sex, race, and gestational age.
ANALYSES
METHODS
Findings were presented as means with 95% confidence intervals. A multivariate linear regression analysis was conducted to evaluate changes in MMO with increasing age.
RESULTS
RESULTS
The sample was composed of 151 infants with a mean age of 5.2 months (95% confidence interval [CI] 4.8 to 5.6), and 33% were female. The mean MMO was 32.1 mm (95% CI 31.5 to 32.7). Results of the linear regression analysis showed MMO to significantly increase with increasing age, increasing at a mean rate of approximately 1 mm per month (coefficient 1.06, 95% CI 0.88 to 1.23, P < .001). In neonates <1 month of age, the mean MMO was 22.0 mm (95% CI 20.4 to 23.6), compared to a mean of 36.7 mm (95% CI 34.8 to 38.6) in infants 11 months of age.
CONCLUSIONS AND RELEVANCE
CONCLUSIONS
The results of this study provide normative data of the association of age with MMO, which may be of value in assessing for infants with jaw mobility disorders.
Identifiants
pubmed: 38336351
pii: S0278-2391(24)00062-4
doi: 10.1016/j.joms.2024.01.013
pii:
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Informations de copyright
Copyright © 2024. Published by Elsevier Inc.