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3つの異なる歯列期における下顎切歯間幅と犬歯間幅：横断的研究
Mandibular Interincisor and Intercanine Width at Three Different Stages of Dentition: A Cross-sectional Study.
PMID: 39144164
抄録
背景と目的:
不正咬合は、正常な生物学的変異の現れであり、歯並びの不正または上下歯列弓間の不正な咬合として定義される。本研究は、ヒマーチャル・プラデーシュ州シムラの小学生における下顎の犬歯間乳歯列、混合歯列、永久歯列を評価することを目的とした。
BACKGROUND AND OBJECTIVE: Malocclusion is a manifestation of normal biological variability, defined as a misalignment of the teeth or an incorrect occlusion between the upper and lower dental arches. This study aimed to evaluate the mandibular intercanine primary, mixed, and permanent dentition in school children of Shimla, Himachal Pradesh.
材料と方法:
本研究は、対象基準を満たした学校の4～18歳の児童1,392人を対象に横断研究を実施した。歯型を採取し、乳歯列期、混合歯列期、永久歯列期という歯列期に基づいてさらに分割した。下顎弓の幅は、デジタルバーニアキャリパーで測定した。
MATERIALS AND METHODS: This cross-sectional study was conducted on 1,392 children between the ages of 4 and 18 years from schools that fulfilled the inclusion criteria. The dental casts were poured and further divided based on the dentition stage, i.e., primary, mixed, and permanent dentition stages. Mandibular arch widths-interincisor and intercanine were measured on the casts by a digital vernier caliper.
結果:
切歯間幅は乳歯列期から混合歯列期にかけて、また永久歯列期では男女間で統計学的に有意な差が認められた。犬歯間幅は乳歯列期から混合歯列期にかけて有意に増加し、混合歯列期から永久歯列期にかけて徐々に増加した。
RESULTS: The statistically significant difference was found as the interincisor width increased from primary to mixed dentition and between males and females for permanent dentition. Intercanine width significantly increases from primary to mixed dentition and gradually from mixed to permanent dentition stages.
結論:
本研究により、乳歯列期から永久歯列期にかけて下歯列弓の切歯間幅および犬歯間幅が有意に増大することが明らかになった。
CONCLUSION: The present study found that there is a significant increase in interincisor and intercanine width in the lower dental arch from primary dentition to permanent dentition.
引用方法:
Singhal P, Jaswal O, Thakur S. Mandibular Interincisor and Intercanine Width at Three Different Stages of Dentition：横断的研究。Int J Clin Pediatr Dent 2024;17(4):417-424.
HOW TO CITE THIS ARTICLE: Singhal P, Jaswal O, Thakur S. Mandibular Interincisor and Intercanine Width at Three Different Stages of Dentition: A Cross-sectional Study. Int J Clin Pediatr Dent 2024;17(4):417-424.