The influence of bone block graft position on bone dimensional changes in staged onlay horizontal ridge augmentation: A 6-month retrospective cohort study

IF 4.8 1区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE Clinical Oral Implants Research Pub Date : 2024-05-24 DOI:10.1111/clr.14299

Qiyue Luo, Yilin Luo, Jingjing Liu, Xingmei Yang

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Abstract

Objectives

To analyze changes in bone dimensions and their modulating factor in bone dimensions 6 months after horizontal ridge augmentation using autogenous bone grafts.

Materials and methods

Thirty-eight patients with horizontally atrophic alveolar ridges of a single edentulous tooth at the maxillary anterior site were divided into two groups based on the fixation position of the bone block during ridge augmentation surgery (H₀, vertical distance from the upper edge of the bone block to the alveolar crest). Patients were classified into a crestal level (CL) group if H₀ ≤ 1 mm and a sub-crestal level (SCL) group if H₀ > 1 mm. The width and height of the alveolar ridge were recorded using CBCT both before and 6 months after the augmentation procedure.

Results

The CL group comprised 20 patients with 23 implants, whereas the SCL group comprised 18 patients with 22 implants. All the augmentation sites exhibited vertical bone resorption. Vertical bone resorption in the SCL group (1.94 ± 2.11 mm) was significantly higher than that of the CL group (0.61 ± 0.64 mm). The SCL group showed significantly lower horizontal bone gain than the CL group (SCL: 1.02 ± 2.30 mm; CL: 3.19 ± 3.17 mm) at the cervical level. Peri-implant marginal bone loss increased significantly in the SCL group (1.00 ± 2.71 mm) compared to the CL group (0.64 ± 0.40 mm).

Conclusion

The bone height decreased after horizontal ridge augmentation using autogenous onlay grafting. The fixation position of the bone block was a modulating factor. The SCL group showed more vertical bone loss, less horizontal bone gain 6 months after surgery, and more marginal bone loss after restoration.

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骨块移植位置对分期嵌体水平脊增量术中骨尺寸变化的影响：一项为期 6 个月的回顾性队列研究。

目的分析使用自体骨移植进行水平牙脊增量术 6 个月后骨尺寸的变化及其调节因素：根据牙槽嵴增量手术中骨块的固定位置（H0，骨块上缘到牙槽嵴的垂直距离），将 38 名上颌前部单颗缺牙的牙槽嵴水平萎缩患者分为两组。如果 H0 ≤ 1 毫米，则将患者分为牙槽嵴水平（CL）组；如果 H0 > 1 毫米，则将患者分为牙槽嵴下水平（SCL）组。在牙槽骨增高术前和术后 6 个月，使用 CBCT 记录牙槽嵴的宽度和高度：CL组有20名患者，23颗种植体；SCL组有18名患者，22颗种植体。所有植入部位都出现了垂直骨吸收。SCL组的垂直骨吸收（1.94 ± 2.11 mm）明显高于CL组（0.61 ± 0.64 mm）。在颈椎水平，SCL 组的水平骨增量明显低于 CL 组（SCL：1.02 ± 2.30 mm；CL：3.19 ± 3.17 mm）。与CL组（0.64 ± 0.40 mm）相比，SCL组种植体周围边缘骨量损失明显增加（1.00 ± 2.71 mm）：结论：使用自体骨块进行水平嵴增量术后，骨高度有所降低。骨块的固定位置是一个影响因素。SCL组的垂直骨量减少较多，术后6个月水平骨量增加较少，修复后边缘骨量减少较多。

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来源期刊

Clinical Oral Implants Research 医学-工程：生物医学

CiteScore

7.70

自引率

11.60%

发文量

149

审稿时长

3 months

期刊介绍： Clinical Oral Implants Research conveys scientific progress in the field of implant dentistry and its related areas to clinicians, teachers and researchers concerned with the application of this information for the benefit of patients in need of oral implants. The journal addresses itself to clinicians, general practitioners, periodontists, oral and maxillofacial surgeons and prosthodontists, as well as to teachers, academicians and scholars involved in the education of professionals and in the scientific promotion of the field of implant dentistry.