Immediate placement refers to the placement of an implant into a tooth socket at the time of extraction; early placement refers to the placement of an implant after substantial gingival healing, but before any clinically significant bone fill occurs within the socket. This study evaluated the success and survival rates of implants following immediate and early placement. 50 implants were placed in 36 patients. 26 immediate (group I) and 24 early placements (group II) were performed. Pain or tenderness with function, mobility, radiographic bone loss from initial surgery and exudate history were evaluated. Mean vertical bone loss in the immediate placement group was 0.55 mm and 0.80 mm in the early placement group. The survival rate for the immediate placement group was 96.16% with 51.6 months follow-up and in the early placement group was 100% with 61.9 months follow-up. The results of this study suggest that although the success and survival rates of early placed implants were a little higher and the follow up period was longer than immediately placed implants, the difference was not remarkable. In conclusion, both implant insertion techniques are safe and reliable procedures with considerably high survival rates.

译文

:立即放置是指拔出时将植入物放置在牙槽中;早期放置是指在基本的牙龈愈合之后但在窝内发生任何临床上显着的骨填充之前的植入物放置。这项研究评估了立即和早期放置后植入物的成功率和存活率。在36例患者中放置了50个植入物。进行了26例即刻(I组)和24例早期放置(II组)。评估疼痛或压痛以及功能,活动性,初次手术的影像学骨丢失和渗出液病史。立即放置组的平均垂直骨丢失为0.55 mm,早期放置组为0.80 mm。立即安置组的生存率为96.16%,随访时间为51.6个月,早期安置组的生存率为100%,随访时间为61.9个月。这项研究的结果表明,尽管早期放置的植入物的成功率和存活率比立即放置的植入物更高,并且随访时间更长,但差异并不明显。总之,两种植入物插入技术都是安全可靠的方法,具有很高的生存率。

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