Influence of guided bone regeneration on marginal bone loss of implants in the mandible posterior region: a 10-year retrospective cohort study
10.3760/cma.j.cn112144-20211007-00456
- VernacularTitle:引导骨再生对下颌后牙种植体边缘骨吸收影响的十年回顾性队列研究
- Author:
Rui YANG
1
;
Sijia ZHANG
;
Shuang SONG
;
Xiangdong LIU
;
Guoqiang ZHAO
;
Jian ZHENG
;
Wenshuang ZHAO
;
Yingliang SONG
Author Information
1. 第四军医大学口腔医学院口腔种植科 军事口腔医学国家重点实验室 口腔疾病国家临床医学研究中心 陕西省口腔生物工程技术研究中心，西安 710032
- Keywords:
Dental implantation;
Alveolar bone loss;
Cohort studies;
Follow-up studies;
Guided bone regeneration
- From:
Chinese Journal of Stomatology
2021;56(12):1211-1216
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the effect of guided bone regeneration (GBR) on marginal bone loss (MBL) in the region of the mandibular posterior tooth by using a retrospective cohort study, in order to provide reference for clinical practice.Methods:The research subjects were patients who received dental implants from October 2008 to June 2011 in the region of the mandibular posterior tooth at the Department of Oral Implantology, School of Stomatology, The Fourth Military Medical University. According to whether GBR was performed or not and the time of implant insertion, the patients were divided into the controls group (patients without bone grafting), simultaneous GBR implantation group, and delayed GBR implantation group. On this basis, the MBL was measured according to radiographs by comparing the marginal bone level from that of immediate postoperation 10 years ago. General data was collected and compared among groups, including modified plaque index (mPI), modified sulcus bleeding index (mSBI), probing depth (PD), and gingival papilla height.Results:The controls group (patients without bone grafting), implantation group, and delayed GBR implantation group followed 58, 76, 26 implants in 26, 32, 13 patients aging at (46.5±9.9), (45.5±10.7), (58.3±6.4) respectively. The duration of the follow-up was (11.2±0.7), (11.1±0.8), (11.1±0.9) years respectively. The 10-year implant survival rate was 100% (58/58), 100% (76/76), 100% (26/26). The MBL was (0.91±0.28), (0.84±0.27), (1.01±0.27) mm respectively. The MBL difference of patients with simultaneous GBR implantation and delayed GBR implantation showed statistical significance ( P<0.05), but these two groups showed no statistical significance compared with the controls group ( P>0.05). The mPI, mSBI, PD, and gingival papilla height of the three groups all had no significance on statistics ( P>0.05). Conclusions:It can be concluded that there is no difference in long-term marginal bone resorption between simultaneous and delayed implantation with or without GBR (using autologous blood mixed with granular bone meal) in the posterior mandibular area.
