Division of Oral Radiology, Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil; Department of Dental Materials and Prosthodontics, School of Dentistry, University of São Paulo, Ribeirão Preto, SP, Brazil.
Department of Oral Radiology, School of Dentistry, Federal University of Alfenas, Alfenas, Minas Gerais, Brazil.
Int Orthod. 2022 Jun;20(2):100636. doi: 10.1016/j.ortho.2022.100636. Epub 2022 May 20.
To assess the influence of sagittal and vertical skeletal patterns, and sex in the angulation and relationship between the maxillary central incisors and the nasopalatine canal.
Cone-beam computed tomography (CBCT) exams of 172 patients were classified into sagittal (class I, II, and III) and vertical skeletal patterns (mesofacial, brachyfacial and dolichofacial). Hard palate-nasopalatine canal and hard palate-long axis of maxillary central incisors angles were measured in sagittal reconstructions. The obtained angles were used to calculate the angulation between maxillary central incisors and nasopalatine canal by triangle geometric relationship. Analysis of variance (multi-way ANOVA) and Tukey post-hoc test were used for data analysis (α=5%).
Sagittal and vertical skeletal patterns, and sex presented a low influence on the angulation of maxillary central incisors and nasopalatine canal. Dolichofacial class II women showed the greatest hard palate-nasopalatine canal angulations (P<0.05) and maxillary central incisors and nasopalatine canal angulations (P<0.05). Mesofacial class II and III men presented the lowest maxillary central incisors and nasopalatine canal angulations (P<0.05).
The sagittal and vertical skeletal patterns, and sex have a low influence on the angulation of the maxillary central incisors and the nasopalatine canal.
评估矢状和垂直骨骼模式以及性别的影响，在上颌中切牙与鼻腭管的角度和关系中。
对 172 名患者的锥形束计算机断层扫描（CBCT）检查进行分类，分为矢状（I、II 和 III 类）和垂直骨骼模式（中面型、短面型和长面型）。在矢状重建中测量硬腭-鼻腭管和硬腭上颌中切牙长轴的角度。通过三角形几何关系计算获得的角度来计算上颌中切牙与鼻腭管之间的角度。采用方差分析（多因素方差分析）和 Tukey 事后检验进行数据分析（α=5%）。
矢状和垂直骨骼模式以及性别对上颌中切牙和鼻腭管的角度影响较小。长面型 II 类女性的硬腭-鼻腭管角度最大（P<0.05），上颌中切牙与鼻腭管的角度也最大（P<0.05）。中面型 II 类和 III 类男性的上颌中切牙与鼻腭管的角度最小（P<0.05）。
矢状和垂直骨骼模式以及性别对上颌中切牙与鼻腭管的角度影响较小。
