Department of Periodontology, Semmelweis University, Szentkirályi Street 47, Budapest, 1088, Hungary.
Empresa de Base Technológica Internacional de Canarias, S.L., Alcalde Jose Ramirez Bethencourt Avenue 17 Las Palmas De Gran Canaria, 35004, Las Palmas De Gran Canaria, Spain.
BMC Oral Health. 2023 Feb 22;23(1):118. doi: 10.1186/s12903-023-02797-3.
To analyze morphological, volumetric, and linear hard tissue changes following horizontal ridge augmentation using a three-dimensional radiographic method.
As part of a larger ongoing prospective study, 10 lower lateral surgical sites were selected for evaluation. Horizontal ridge deficiencies were treated with guided bone regeneration (GBR) using a split-thickness flap design and a resorbable collagen barrier membrane. Following the segmentation of baseline and 6-month follow-up cone-beam computed tomography scans, volumetric, linear, and morphological hard tissue changes and the efficacy of the augmentation were assessed (expressed by the volume-to-surface ratio).
Volumetric hard tissue gain averaged 605.32 ± 380.68 mm. An average of 238.48 ± 127.82 mm hard tissue loss was also detected at the lingual aspect of the surgical area. Horizontal hard tissue gain averaged 3.00 ± 1.45 mm. Midcrestal vertical hard tissue loss averaged 1.18 ± 0.81 mm. The volume-to-surface ratio averaged 1.19 ± 0.52 mm/mm. The three-dimensional analysis showed slight lingual or crestal hard tissue resorption in all cases. In certain instances, the greatest extent of hard tissue gain was observed 2-3 mm apical to the initial level of the marginal crest.
With the applied method, previously unreported aspects of hard tissue changes following horizontal GBR could be examined. Midcrestal bone resorption was demonstrated, most likely caused by increased osteoclast activity following the elevation of the periosteum. The volume-to-surface ratio expressed the efficacy of the procedure independent of the size of the surgical area.
使用三维放射学方法分析水平骨增量后形态学、体积和线性硬组织的变化。
作为一项正在进行的大型前瞻性研究的一部分，选择了 10 个下颌外侧手术部位进行评估。采用分层皮瓣设计和可吸收胶原屏障膜的引导骨再生（GBR）技术治疗水平骨缺损。在对基线和 6 个月的锥形束计算机断层扫描进行分割后，评估了体积、线性和形态硬组织的变化以及增强的效果（用体积/表面积比表示）。
体积硬组织平均增加 605.32±380.68mm。在手术区舌侧也检测到平均 238.48±127.82mm的硬组织损失。水平硬组织平均增加 3.00±1.45mm。中颊嵴垂直硬组织损失平均为 1.18±0.81mm。体积/表面积比平均为 1.19±0.52mm/mm。三维分析显示所有病例均有轻微的舌侧或颊嵴硬组织吸收。在某些情况下，在最初边缘嵴水平的根尖 2-3mm 处观察到最大程度的硬组织增加。
应用该方法可以检查水平 GBR 后硬组织变化的以前未报道的方面。证明了中颊嵴骨吸收，这很可能是由于骨膜抬起后破骨细胞活性增加所致。体积/表面积比独立于手术区域的大小表示了手术的效果。
