Shi Mengru, Chen Shijie, Liu Haiwen, Cai Gengbin, Gong Zhuohong, Shi Jiamin, Gao Guangqi, Chen Zhuofan, Liu Quan, Chen Zetao
Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China.
Guangdong Research Center for Dental and Cranial Rehabilitation and Material Engineering, Guangzhou, China.
J Prosthodont Res. 2025 Aug 20;69(3):321-330. doi: 10.2186/jpr.JPR_D_23_00299. Epub 2025 Jan 4.
The basal bone of the anterior maxilla plays a crucial role in maintaining primary stability of immediate implants. However, no consensus exists on the relationship between basal bone width and immediate implant success, unlike for basal bone length. This study presents a clinical scheme to predict the primary stability of immediate implants using the basal bone width.
Cone-beam computed tomography (CBCT) images were acquired from 1000 patients to determine the quantitative characteristics of the basal bone of the anterior maxilla. Basal bone dimensions, including the length and width along the tooth and bone axes, and immediate implant-related hard tissue indices, were measured on the sagittal sections. Descriptive statistics, frequency, multiple correlation, and canonical correlation analyses were performed.
Basal bone indices were significantly greater in men than in women and exhibited different patterns of change with increasing age. Canonical correlation analyses revealed that the basal bone indices, especially basal bone width, correlated with other immediate implant-related indicators, among which the total width of the basal bone at 2 mm apical to the apex (Apical-2mm) exhibited the greatest contribution. Apical-2mm was positively correlated with the coronal bone dimensions, apical bone dimensions, basal bone length, and angulation.
The basal bone width of the maxillary anterior tooth may reflect the distribution of other implant-related anatomical indices, which may provide an additional reference for predicting the primary stability of an immediate implant.
上颌前部的基骨在维持即刻种植体的初期稳定性方面起着关键作用。然而，与基骨长度不同，关于基骨宽度与即刻种植成功之间的关系尚无共识。本研究提出了一种利用基骨宽度预测即刻种植体初期稳定性的临床方案。
从1000例患者获取锥形束计算机断层扫描（CBCT）图像，以确定上颌前部基骨的定量特征。在矢状面上测量基骨尺寸，包括沿牙齿和骨轴的长度和宽度，以及与即刻种植相关的硬组织指标。进行描述性统计、频率分析、多重相关分析和典型相关分析。
男性的基骨指标显著高于女性，且随着年龄增长呈现出不同的变化模式。典型相关分析显示，基骨指标，尤其是基骨宽度，与其他即刻种植相关指标相关，其中根尖下方2mm处基骨的总宽度（根尖下2mm）贡献最大。根尖下2mm与冠部骨尺寸、根尖部骨尺寸、基骨长度和角度呈正相关。
上颌前牙的基骨宽度可能反映其他种植相关解剖指标的分布情况，这可为预测即刻种植体的初期稳定性提供额外参考。
