Department of Periodontology, Semmelweis University, Szentkirályi Street 47, Budapest, 1088, Hungary.
Head Face Med. 2024 Sep 28;20(1):53. doi: 10.1186/s13005-024-00456-8.
Peri-implant soft tissue corrections are often indicated following alveolar ridge augmentation, due to the distortion of the keratinized mucosa at the area of augmentation. The objective of the current study was to evaluate the dimensional soft tissue changes following horizontal guided bone regeneration (GBR) utilizing 3D digital data.
8 mandibular surgical sites with horizontal alveolar ridge deficiencies were treated utilizing a resorbable collagen membrane and a split-thickness flap design. Baseline and 6-month follow-up cone-beam computed tomography (CBCT) scans were reconstructed as 3D virtual models and were superimposed with the corresponding intraoral scan. Linear changes of supracrestal vertical- horizontal soft tissue alterations were measured in relation to the alveolar crest at the mesial- middle- and distal aspect of the surgical area. Soft tissue dimensions were measured at baseline and at 6-month follow-up.
Preoperative supracrestal soft tissue height measured midcrestally averaged at 2.37 mm ± 0.68 mm, 2.37 mm ± 0.71 mm and 2.64 mm ± 0.87 mm at the mesial-, middle- and distal planes. Whereas postoperative supracrestal soft tissue height was measured at 2.62 mm ± 0.72 mm, 2.67 mm ± 0.67 mm and 3.69 mm ± 1.02 mm at the mesial, middle and distal planes, respectively. Supracrestal soft tissue width changed from 2.14 mm ± 0.72 mm to 2.47 mm ± 0.46 mm at the mesial, from 1.72 mm ± 0.44 mm to 2.07 mm ± 0.67 mm and from 2.15 mm ± 0.36 mm to 2.36 mm ± 0.59 mm at the mesial, middle and distal planes, respectively. Additionally the buccal horizontal displacement of supracrestal soft tissues could be observed.
The current study did not report significant supracrestal soft tissue reduction following horizontal GBR with a split-thickness flap. Even though there was a slight increase in both vertical and horizontal dimensions, differences are clinically negligible.
The trail was approved by the U.S. National Library of Medicine ( www.
gov ); trial registration number: NCT05538715; registration date: 09/09/2022.
由于在增强区域角化黏膜会发生变形，因此在牙槽嵴增强后，通常需要进行种植体周围软组织修正。本研究的目的是使用 3D 数字数据评估水平引导骨再生（GBR）后软组织的尺寸变化。
8 个下颌手术部位存在水平牙槽嵴缺陷，采用可吸收胶原膜和全厚瓣设计进行治疗。基线和 6 个月的锥形束 CT（CBCT）扫描被重建为 3D 虚拟模型，并与相应的口内扫描叠加。在手术区域的近中-中部-远中位置，测量牙槽嵴上方的超嵴垂直-水平软组织改变的线性变化。在基线和 6 个月的随访时测量软组织尺寸。
术前超嵴软组织高度在近中-中部-远中平面的测量平均值分别为 2.37mm±0.68mm、2.37mm±0.71mm 和 2.64mm±0.87mm。而术后超嵴软组织高度分别为 2.62mm±0.72mm、2.67mm±0.67mm 和 3.69mm±1.02mm。超嵴软组织宽度从近中平面的 2.14mm±0.72mm 变为 2.47mm±0.46mm，从中部平面的 1.72mm±0.44mm 变为 2.07mm±0.67mm，从远中平面的 2.15mm±0.36mm 变为 2.36mm±0.59mm。此外，还观察到超嵴软组织的颊侧水平移位。
本研究未报告在使用全厚瓣进行水平 GBR 后超嵴软组织有明显减少。尽管垂直和水平尺寸都略有增加，但差异在临床上可以忽略不计。
该试验得到美国国立医学图书馆（www.clinicaltrials.gov）的批准；试验注册号：NCT05538715；注册日期：2022 年 9 月 9 日。
