Rodrigues Diogo M, Petersen Rodrigo L, Montez Caroline, de Moraes José R, Ferreira Vinicius, Barboza Eliane Porto
Private practice, Niterói, Rio de Janeiro, Brazil.
Radiologist, Petersen Diagnostic Imaging Center, Niterói, Rio de Janeiro, Brazil.
J Prosthet Dent. 2023 Nov;130(5):705-714. doi: 10.1016/j.prosdent.2021.10.006. Epub 2022 Jan 7.
In a prosthetically driven treatment plan, the tomographic sagittal root position in relation to the bone housing is an important factor in the decision-making process for immediate implant placement. However, other important parameters must be considered in the bone housing of each tooth, including the alveolar ridge dimensions, the buccal and the palatal bone thickness, and the root dimensions.
The purpose of this clinical study was to evaluate the relationship between the sagittal root position of maxillary anterior teeth and the bone housing.
A total of 420 maxillary anterior teeth were analyzed in 70 participants. The tomographic scans were classified as sagittal root position classes I, II, III, and IV. Measurements included buccal and palatal bone thickness, alveolar ridge height, alveolar ridge width, apical bone height, root length, and root width. The Pearson correlation, ANOVA, and Tukey post hoc tests were used to determine statistically significant differences (α=0.05).
The sagittal root position distribution was 65.2%, 9.3%, 0.7%, and 24.8% for classes I, II, III, and IV, respectively. Bone housing measurements were significantly different in relation to the 4 sagittal root position classes (P<.05), except for alveolar ridge height. Post hoc analysis showed that, in class I, buccal bone thickness and alveolar bone height were significantly low, whereas root length and palatal bone thickness were high. The higher buccal bone thickness was found in class II, and lower alveolar ridge width and palatal bone thickness in class IV. These measurements in tooth groups were also significantly different over the sagittal root position classes (P<.05). The buccal bone thickness, palatal bone thickness, and alveolar ridge width presented different levels of correlation with alveolar ridge width over the sagittal root position classes. The buccal bone thickness and palatal bone thickness were weakly correlated in class I (r=0.163) and IV (r=0.222).
Bone housing measurements were significantly different in relation to the sagittal root position of maxillary anterior teeth.
在修复驱动的治疗计划中，断层矢状根相对于牙槽骨容纳结构的位置是即刻种植体植入决策过程中的一个重要因素。然而，每颗牙齿的牙槽骨容纳结构中还必须考虑其他重要参数，包括牙槽嵴尺寸、颊侧和腭侧骨厚度以及牙根尺寸。
本临床研究的目的是评估上颌前牙矢状根位置与牙槽骨容纳结构之间的关系。
对70名参与者的420颗上颌前牙进行了分析。断层扫描被分为矢状根位置I、II、III和IV类。测量包括颊侧和腭侧骨厚度、牙槽嵴高度、牙槽嵴宽度、根尖骨高度、牙根长度和牙根宽度。采用Pearson相关性分析、方差分析和Tukey事后检验来确定统计学上的显著差异（α=0.05）。
矢状根位置I、II、III和IV类的分布分别为65.2%、9.3%、0.7%和2（此处原文有误，应为24.8%）4.8%。除牙槽嵴高度外，与4个矢状根位置类相关的牙槽骨容纳结构测量值存在显著差异（P<0.05）。事后分析表明，在I类中，颊侧骨厚度和牙槽骨高度显著较低，而牙根长度和腭侧骨厚度较高。II类中颊侧骨厚度较高，IV类中牙槽嵴宽度和腭侧骨厚度较低。在矢状根位置类中，这些牙齿组的测量值也存在显著差异（P<0.05）。在矢状根位置类中，颊侧骨厚度、腭侧骨厚度和牙槽嵴宽度与牙槽嵴宽度呈现出不同程度的相关性。I类（r=0.163）和IV类（r=0.222）中颊侧骨厚度和腭侧骨厚度呈弱相关。
与上颌前牙矢状根位置相关的牙槽骨容纳结构测量值存在显著差异。
