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Published on: November 4, 2025
The relationship between tongue-base position and craniofacial morphology in preschool children
Naoko Niikuni1, Ichiro Nakajima, Morito Akasaka
1Department of Pediatric Dentistry, School of Dentistry, Nihon University, Tokyo, Japan. niikuni@dent.nihon-u.ac.jp
Insights
Tongue-base position influences craniofacial growth in preschool children. This study found correlations between tongue posture and facial development, impacting maxillo-mandibular growth even at a young age.
Area of Science:
- Pediatric Dentistry
- Craniofacial Morphology
- Orthodontics
Background:
- Tongue-base position is a critical factor in craniofacial development.
- Understanding early influences on jaw growth is essential for timely intervention.
Purpose of the Study:
- To investigate the association between tongue-base position and craniofacial morphology in preschool children.
- To determine if age and sex influence these relationships.
Main Methods:
- Lateral cephalometric radiographs were used to analyze craniofacial structures.
- Measurements included posterior facial height, nasal floor length, mandibular corpus length, and tongue-base position.
- Statistical analysis was performed to identify correlations.
Main Results:
- No significant sex-based differences were observed in the measurements.
- Tongue-base position, posterior facial height, nasal floor length, and mandibular corpus length all showed positive correlations with age.
- Tongue-base position was significantly correlated with maxillary position, vertical mandibular rotation, and nasopharyngeal airway space.
Conclusions:
- Tongue-base position significantly influences maxillo-mandibular growth in preschool children.
- Early identification of tongue posture can aid in predicting and managing craniofacial development.
- These findings highlight the importance of evaluating tongue posture in pediatric dental assessments.
Abstract:
The association between tongue-base position and craniofacial morphology was investigated in 35 preschool children (17 girls and 18 boys), 3 to 6 years of age, by the lateral cephalometric radiographs. There was no statistical difference in the measurements of those between girls and boys. Posterior facial height, nasal floor length, mandibular corpus length and tongue-base position were positively correlated with age, and tongue-base position was correlated with maxillary position, vertical mandibular rotation and the nasopharyngeal airway space. The results of this study showed that tongue-base position influenced maxillo-mandibular growth even in young preschool children.
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