Neves Leniana Santos, Pinzan Arnaldo, Janson Guilherme, Canuto Conceição Eunice, de Freitas Marcos Roberto, Cançado Rodrigo Hermont
Department of Orthodontics, Bauru Dental School, University of Sao Paulo, Brazil.
Am J Orthod Dentofacial Orthop. 2005 Nov;128(5):619-23. doi: 10.1016/j.ajodo.2004.05.026.
The purpose of this research was to compare the maturation stage of permanent teeth in subjects with vertical and horizontal growth patterns.
Lateral cephalograms of 256 subjects were reviewed, and subjects were classified according to facial growth pattern. The 30 subjects with the greatest predominance of vertical growth and the 30 with the greatest predominance of horizontal growth were selected; these subjects comprised the vertical and horizontal groups, respectively. Panoramic radiographs of the subjects obtained at 8 years of age were used to evaluate the maturation of the permanent teeth, expressed by the dental age. Comparisons between groups were made with independent t tests.
A statistically significant difference was noted between the dental ages of the vertical and horizontal groups, with the vertical group having a more advanced dental age.
Subjects with vertical growth patterns should be expected to mature dentally earlier than horizontal growers.
本研究的目的是比较具有垂直生长模式和水平生长模式的受试者恒牙的成熟阶段。
回顾了256名受试者的头颅侧位片，并根据面部生长模式对受试者进行分类。选择垂直生长占主导的30名受试者和水平生长占主导的30名受试者；这些受试者分别组成垂直组和水平组。使用8岁时获得的受试者全景X线片来评估恒牙的成熟度，以牙龄表示。组间比较采用独立t检验。
垂直组和水平组的牙龄之间存在统计学上的显著差异，垂直组的牙龄更超前。
预计具有垂直生长模式的受试者在牙齿方面比水平生长的受试者成熟得更早。
