摘要
目的应用锥形束CT(CBCT)研究Bio-oss用于唇侧骨缺损种植牙的骨组织改建效果。方法选择上前牙单颗牙唇侧骨缺损种植牙患者12例,种植体植入的同期应用Bio-oss骨粉行引导骨组织再生技术,保证唇侧具有2 mm以上骨厚度,术后6、12、24个月行CBCT检查,评价唇侧骨组织的厚度以及骨改建的情况。结果术后6个月时,Bio-oss骨颗粒存在,与自体骨组织界限清晰,人工骨组织外形不规则;术后12个月时,人工骨颗粒与周边自体骨组织无明显分界,但整体呈高密度影像,无明显骨密质-骨松质界限,唇侧人工骨厚度降低35.12%;24个月时,人工骨与自体骨分界不清,形成明显的骨密质-骨松质界限,唇侧人工骨厚度降低36.73%。结论 Bio-oss人工骨在种植牙应用时骨组织量的改变主要发生在12个月内,唇侧人工骨厚度降低35.12%,24个月时可形成正常的骨密质-骨松质界限。
Objective This study aims to use cone beam CT（CBCT） analyses bone tissue remodeling following Bio-oss applied labial bone cracking for guided bone regeneration and to provide imaging guidance for guided bone regeneration techniques. Methods A total of 12 patients with labial bone cracking needed dental implant. Bio-oss was given after dental implant was implanted in the body to ensure 2 mm of labial bone thickness or more after surgery. The labial bone tissue thickness and reconstruction situations were evaluated at 6, 12, and 24 months postoperative using CBCT. Results Bio- oss bone particles existed, and clear boundaries with autologous bone tissue were observed after 6 months. The bone tissue was irregularly shaped. After 12 months, Bio-oss bone particles with surrounding bone tissue had no obvious boundaries. However, the whole Bio-oss bone tissue showed a high-density image. No obvious cortical bone-spongy bone boundaries were observed. Labial bone thickness reduced by 35.12%. Twenty-four months after implant surgery, unclear boundaries were observed between Bio-oss bone and autologous bone. Distinct cortical bone-spongy bone boundaries also existed. The labial bone thickness reduced by 36.73%. Conclusion Bone tissue changes mainly occurred within 12 months in Bio-oss bone application implant surgery. Labial bone thickness reduced by 35.12%, and normal cortical-cancellous bone boundaries were achieved after 24 months.
出处
《国际口腔医学杂志》
CAS
北大核心
2015年第4期420-422,共3页
International Journal of Stomatology
基金
深圳市龙华新区科技计划项目(20140915A1030020)
