Tonello Diego Luiz, Ladewig Victor de Miranda, Guedes Fábio Pinto, Ferreira Conti Ana Cláudia de Castro, Almeida-Pedrin Renata Rodrigues, Capelozza-Filho Leopoldino
Department of Orthodontics, Sagrado Coração University, Bauru, São Paulo, Brazil.
Department of Orthodontics, Sagrado Coração University, Bauru, São Paulo, Brazil.
Am J Orthod Dentofacial Orthop. 2017 Jul;152(1):42-48. doi: 10.1016/j.ajodo.2016.11.028.
We used cone-beam computed tomography to evaluate the maturation stages of the midpalatal sutures in children aged 11 to 15 years old. Maxillary expansion is successful for most patients in this age group, so we sought to identify the status of suture maturation in these subjects to use as a comparison for the prognosis of rapid maxillary expansion in older patients.
Tomographic images in axial sections of the midpalatal sutures from 84 children (40 boys, 44 girls; ages, 11-15 years) were classified using a scale denoting the maturation stage of the midpalatal suture (A, B, C, D, and E). The chi-square test was applied to evaluate suture stages by sex and age groups.
Stage A was observed in only one 11-year-old girl. Stage B was present at all ages but was more prevalent in those less than 13 years of age. Stage C was the most prevalent in all evaluated ages. Stages D and E showed low prevalence rates. There were higher prevalences of the early stages of maturation in boys.
The results of this study, which showed dominant prevalence of stage C, suggest that conventional, nonsurgical rapid maxillary expansion performed in patients over 15 years old is justified by a satisfactory prognosis when assessment of the sutural status indicates stage C.
我们使用锥形束计算机断层扫描来评估11至15岁儿童中腭缝的成熟阶段。上颌骨扩弓对该年龄组的大多数患者来说是成功的，因此我们试图确定这些受试者中腭缝成熟的状态，以便作为老年患者快速上颌骨扩弓预后的比较。
使用表示中腭缝成熟阶段（A、B、C、D和E）的量表对84名儿童（40名男孩，44名女孩；年龄11至15岁）中腭缝轴向断层图像进行分类。应用卡方检验按性别和年龄组评估缝阶段。
仅在一名11岁女孩中观察到A期。B期在所有年龄段均有出现，但在13岁以下儿童中更为普遍。C期在所有评估年龄中最为普遍。D期和E期的患病率较低。男孩中成熟早期的患病率较高。
本研究结果显示C期占主导地位，表明当缝合状态评估显示为C期时，对15岁以上患者进行传统的非手术快速上颌骨扩弓具有令人满意的预后，是合理的。
