Enhancing guided bone regeneration with cross-linked collagen-conjugated xenogeneic bone blocks and membrane fixation: A preclinical in vivo study

IF 4.8 1区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE Clinical Oral Implants Research Pub Date : 2024-06-05 DOI:10.1111/clr.14309

Yin-Zhe An, Young Woo Song, Daniel S. Thoma, Franz J. Strauss, Jung-Seok Lee

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Abstract

Objective

To determine whether combining cross-linked (CL) collagen-integrated xenogeneic bone blocks stabilized with the fixation of resorbable collagen membranes (CM) can enhance guided bone regeneration (GBR) in the overaugmented calvarial defect model.

Materials and Methods

Four circular defects with a diameter of 8 mm were prepared in the calvarium of 13 rabbits. Defects were randomly assigned to receive one of the following treatments: (i) non-cross-linked (NCL) porcine-derived collagen-embedded bone block covered by a CM without fixation (NCL + unfix group); (ii) NCL bone block covered by CM with fixation using bone-tack (NCL + fix group); (iii) cross-linked (CL) porcine-derived collagen-embedded bone block covered by CM without fixation (CL + unfix group); and (iv) CL bone block covered by CM with fixation using bone-tack fixation (CL + fix group). The efficacy of GBR was assessed through histological and molecular analyses after 2 and 8 weeks.

Results

At 2 weeks, there were no significant differences in histologically measured areas of newly formed bone among the groups. At 8 weeks, however, the CL + fix group exhibited a larger area of new bone (5.08 ± 1.09 mm², mean ± standard deviation) compared to the NCL + unfix (1.62 ± 0.42 mm²; p < .0083), NCL + fix (3.97 ± 1.39 mm²) and CL + unfix (2.55 ± 1.04 mm²) groups. Additionally, the expression levels of tumour necrosis factor-alpha, fibroblast growth factor-2, vascular endothelial growth factor, osteocalcin and calcitonin receptor were significantly higher in the CL + fix group compared to the other three groups (p < .0083).

Conclusion

Cross-linked bone blocks stabilized with collagen membrane fixation can significantly enhance GBR.

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利用交联胶原共轭异种骨块和膜固定增强引导性骨再生：临床前体内研究。

目的确定结合交联（CL）胶原整合异种骨块与可吸收胶原膜（CM）固定是否能在过度增大的腓骨缺损模型中增强引导骨再生（GBR）：在 13 只兔子的腓骨上制备了四个直径为 8 毫米的圆形缺损。缺损处被随机分配接受以下处理之一：(i) 非交联（NCL）孔源胶原嵌入骨块，由 CM 覆盖，无固定（NCL + unfix 组）；(ii) NCL 骨块，由 CM 覆盖，使用骨钉固定（NCL + fix 组）；(iii)交联（CL）孔源胶原嵌入骨块，由 CM 覆盖，无固定（CL + unfix 组）；(iv)CL 骨块，由 CM 覆盖，使用骨钉固定（CL + fix 组）。2 周和 8 周后，通过组织学和分子分析评估 GBR 的疗效：结果：2 周后，经组织学测量，各组新形成骨的面积无明显差异。但在 8 周时，与 NCL + 未固定组（1.62 ± 0.42 mm2; p 2）和 CL + 未固定组（2.55 ± 1.04 mm2）相比，CL + 固定组的新骨面积更大（5.08 ± 1.09 mm2，平均值 ± 标准差）。此外，与其他三组相比，CL + 固定组的肿瘤坏死因子-α、成纤维细胞生长因子-2、血管内皮生长因子、骨钙素和降钙素受体的表达水平显著较高（p 结论通过胶原膜固定稳定的交联骨块可显著提高 GBR。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.