Vedovello Silvia Amelia Scudeler, Carvalho Ana Letícia Mello de, Carneiro Diego Patrik Alves, Meneghim Marcelo de Castro
Universidade Estadual de Campinas - Unicamp, Piracicaba Dental School, Department of Health Sciences and Child Dentistry, Piracicaba, SP, Brazil.
Universidade Estadual de Campinas - Unicamp, Piracicaba Dental School, Department of Community Dentistry, Piracicaba, SP, Brazil.
Braz Oral Res. 2025 Jan 20;39:e007. doi: 10.1590/1807-3107bor-2025.vol39.007. eCollection 2025.
This study aim was to evaluate the need for orthodontic treatment of mixed to permanent dentition using the Dental Aesthetic Index (DAI) in a 4-year follow-up. A longitudinal study was conducted with 353 children in the stages from mixed (T1) to permanent (T2) dentition. The need for orthodontic treatment was assessed using the DAI categorized into: DAI 1 (absence of malocclusion and orthodontic treatment need; DAI ≤ 25); DAI 2 (malocclusion is defined and elective orthodontic treatment is needed; DAI = 26 to 30); DAI 3 (severe malocclusion and a desirable orthodontic treatment need; DAI = 31 to 35) and DAI 4 (severe malocclusion and a mandatory orthodontic treatment need; DAI ≥ 36). The Bowker symmetry test was used to determine agreement in the categorization of DAI at T1 and T2, with a significance level of 5%. The results showed a significant disagreement in the need for orthodontic treatment between T1 and T2 (p<0.05). In 34.6% of children evaluated in T1, the same need for orthodontic treatment was maintained in T2. According to the DAI, in 60.8% of the children, the need decreased, and in 39.2% their need for orthodontic treatment increased. This preliminary longitudinal study using DAI, showed a decrease in malocclusion and need for orthodontic treatment as the dentition transitioned from mixed to permanent occurred. This finding has valuable implications for epidemiological data in orthodontics.
本研究旨在通过4年的随访，使用牙科美学指数（DAI）评估混合牙列至恒牙列正畸治疗的需求。对353名处于从混合牙列（T1）到恒牙列（T2）阶段的儿童进行了一项纵向研究。使用DAI评估正畸治疗需求，分为：DAI 1（无错颌畸形且无需正畸治疗；DAI≤25）；DAI 2（错颌畸形已明确且需要选择性正畸治疗；DAI = 26至30）；DAI 3（严重错颌畸形且需要理想的正畸治疗；DAI = 31至35）和DAI 4（严重错颌畸形且需要强制性正畸治疗；DAI≥36）。使用Bowker对称性检验确定T1和T2时DAI分类的一致性，显著性水平为5%。结果显示，T1和T2之间正畸治疗需求存在显著差异（p<0.05）。在T1评估的儿童中，34.6%在T2时维持相同的正畸治疗需求。根据DAI，60.8%的儿童需求下降，39.2%的儿童正畸治疗需求增加。这项使用DAI的初步纵向研究表明，随着牙列从混合牙列过渡到恒牙列，错颌畸形和正畸治疗需求有所减少。这一发现对正畸学的流行病学数据具有重要意义。
