Singhal Parul, Jaswal Oshin, Thakur Seema
Department of Pediatric and Preventive Dentistry, HP Government Dental College & Hospital, Shimla, Himachal Pradesh, India.
Int J Clin Pediatr Dent. 2024 Apr;17(4):417-424. doi: 10.5005/jp-journals-10005-2839.
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.
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.
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.
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.
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.
错牙合畸形是正常生物变异的一种表现,定义为牙齿排列不齐或上下牙弓之间咬合不正确。本研究旨在评估喜马偕尔邦西姆拉市学童下颌尖牙间乳牙列、混合牙列和恒牙列情况。
本横断面研究对来自符合纳入标准学校的1392名4至18岁儿童进行。灌注牙模,并根据牙列阶段进一步划分,即乳牙列、混合牙列和恒牙列阶段。使用数字游标卡尺在牙模上测量下颌牙弓宽度——切牙间宽度和尖牙间宽度。
发现随着切牙间宽度从乳牙列增加到混合牙列,以及恒牙列中男性和女性之间存在统计学显著差异。尖牙间宽度从乳牙列到混合牙列显著增加,从混合牙列到恒牙列阶段逐渐增加。
本研究发现,下颌牙弓中切牙间和尖牙间宽度从乳牙列到恒牙列有显著增加。
Singhal P, Jaswal O, Thakur S. 牙列三个不同阶段的下颌切牙间和尖牙间宽度:一项横断面研究。《国际临床儿科牙科学杂志》2024;17(4):417 - 424。