Herrera-Atoche José Rubén, Medina-Mazariegos Carlos Roberto, Zúñiga-Herrera Iván Daniel, Colomé-Ruiz Gabriel Eduardo, Aguilar-Ayala Fernando Javier, Pinzón-Te Alicia Leonor, Aguilar-Pérez Fernando Javier
Orthodontic Department, School of Dentistry, Universidad Autónoma de Yucatán, Mérida, Mexico.
Paediatric Dentistry Department, School of Dentistry, Universidad Autónoma de Yucatán, Mérida, Mexico.
J Dent Sci. 2020 Sep;15(3):336-344. doi: 10.1016/j.jds.2020.03.006. Epub 2020 Apr 1.
BACKGROUND/PURPOSE: Non-formation of a tooth impacts the morphology of the alveolar bone, which may, in turn, generate an imbalance in facial growth. This retrospective case-control study aimed to determine whether observable differences exist in the facial growth of patients with dental agenesis relative to complete dentition controls. MATERIALS AND METHODS: The sample comprised 75 patients with dental agenesis, and each case was paired with two controls of the same age and gender ( = 150). All patients were measured cephalometrically (31 variables), and both groups were compared with student's - or Z-test (P < 0.05). Subsequently, ANOVA or Kruskal-Wallis tests (P < 0.05) were used to compare facial growth depending on the missing tooth's sagittal location in the dental arch (anterior or posterior agenesis); as well as its location in the affected bone (maxillary, mandibular, or both). RESULTS: Four measurements with significant differences were found, whereas ten were found in the sagittal location in the dental arch analysis. Regarding the affected bone, there were no affected variables. CONCLUSION: it was found that patients with dental agenesis show differences in the sagittal growth of the upper jaw and in the position of the lower incisor. In the studied population, these changes are strongly influenced by the sagittal location of the missing tooth, while its location in the jaws does not affect facial growth.
背景/目的:牙齿未形成会影响牙槽骨的形态,进而可能导致面部生长失衡。这项回顾性病例对照研究旨在确定牙发育不全患者相对于全牙列对照者在面部生长方面是否存在可观察到的差异。 材料与方法:样本包括75例牙发育不全患者,每个病例与两名年龄和性别相同的对照者配对(n = 150)。对所有患者进行头影测量(31个变量),两组采用学生t检验或Z检验进行比较(P < 0.05)。随后,使用方差分析或克鲁斯卡尔 - 沃利斯检验(P < 0.05)根据牙弓中缺失牙的矢状位置(前部或后部发育不全)以及其在受影响骨(上颌骨、下颌骨或两者)中的位置来比较面部生长情况。 结果:发现四项测量存在显著差异,而在牙弓矢状位置分析中发现十项存在显著差异。关于受影响的骨,没有发现受影响的变量。 结论:发现牙发育不全患者在上颌矢状生长和下切牙位置方面存在差异。在研究人群中,这些变化受缺失牙矢状位置的强烈影响,而其在颌骨中的位置不影响面部生长。
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