The Stability of Immediate Implant Placement in Posterior Region: a Six-Month Study
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Abstract
The purpose of this study was to evaluate implant stability change during the healing period after immediate implant placement, in order to determine the appropriate time for implant loading in the posterior teeth. The hydrophilic SLA surface tapered implants were immediately placed after posterior teeth extraction. The stability of the implants was obtained using resonance frequency analysis, and presented using implant stability quotient (ISQ) values. The stability measurements were performed immediately after placement (0 week), and at 1 week, 2 weeks, 4 weeks, 8 weeks, 12 weeks and 24 weeks after implant placement, respectively. The implants achieved prosthesis after 6 months of placement. A total of 23 patients with 23 implants were included in this study. After immediate placement, all the implants had high primary stability (ISQ=74.03+5.63). The ISQ values were observed to be lowest 4 weeks after placement (71.82+6.17) before gradually increasing over the 24-week measurement period (81.59+3.94). There was a significant correlation (p<0.001) found between mean ISQ and time. The present study demonstrates that implant stability change is correlated with time, with all the immediate implants placed in posterior teeth having high primary stability. The implant stability gradually decreased over 4 weeks, before gradually increasing until week 20, and subsequently decreasing thereafter. During the healing period, implant stability did not decrease below an ISQ 70, indicating high stability that is sufficient for immediate loading.
Article Details
บทความ ข้อมูล เนื้อหา รูปภาพ ฯลฯ ที่ได้รับการลงตีพิมพ์ในวิทยาสารทันตแพทยศาสตร์ มหาวิทยาลัยขอนแก่นถือเป็นลิขสิทธิ์เฉพาะของคณะทันตแพทยศาสตร์ มหาวิทยาลัยขอนแก่น หากบุคคลหรือหน่วยงานใดต้องการนำทั้งหมดหรือส่วนหนึ่งส่วนใดไปเผยแพร่ต่อหรือเพื่อกระทำการใด ๆ จะต้องได้รับอนุญาตเป็นลายลักษณ์อักษร จากคณะทันตแพทยศาสตร์ มหาวิทยาลัยขอนแก่นก่อนเท่านั้น
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