Witoonkitvanich P, Amornsettachai P, Panyayong W, Rokaya D, Vongsirichat N, Suphangul S
Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Mahidol University, Bangkok, Thailand.
Department of Advanced General Dentistry, Faculty of Dentistry, Mahidol University, Bangkok, Thailand.
Int J Oral Maxillofac Surg. 2025 Apr;54(4):365-373. doi: 10.1016/j.ijom.2024.12.011. Epub 2025 Jan 9.
The aim of this study was to assess the stability of immediate dental implants in fresh molar extraction sockets and to compare those placed in the maxilla and mandible. This was a controlled, prospective, non-randomized clinical trial; the maxilla was the test group and the mandible was the control group. Thirty patients with an unrestorable molar tooth who needed immediate implant placement were included. The implant surgery was performed using a surgical stent and a guided surgery kit. After placement of the implant, the implant stability quotient (ISQ) was measured. A titanium customized healing abutment was inserted, and further ISQ values were obtained during 24 weeks of follow-up. The mean primary stability after immediate implant placement was >70 (73.98 ± 5.40 in the maxilla and 73.59 ± 6.74 in the mandible; P = 0.864). In the maxilla, stability was reduced at 2 weeks and 4 weeks and then increased gradually. In conclusion, immediate implant placement in the molar region with computer-guided surgery resulted in excellent implant stability. Higher mean ISQ values were obtained for the implants in the mandibular molar region when compared to the maxillary molar region (significant at 24 weeks, P = 0.018).
本研究的目的是评估新鲜磨牙拔牙窝内即刻种植体的稳定性，并比较在上颌和下颌植入的种植体。这是一项对照、前瞻性、非随机临床试验；上颌为试验组，下颌为对照组。纳入30例需要即刻种植的无法修复磨牙患者。种植手术使用手术导板和引导手术套件进行。种植体植入后，测量种植体稳定性商数（ISQ）。插入定制的钛愈合基台，并在24周的随访期间获得进一步的ISQ值。即刻种植后的平均初始稳定性>70（上颌为73.98±5.40，下颌为73.59±6.74；P = 0.864）。在上颌，稳定性在2周和4周时降低，然后逐渐增加。总之，计算机引导手术在下颌磨牙区即刻种植可获得优异的种植体稳定性。与上颌磨牙区相比，下颌磨牙区种植体的平均ISQ值更高（在24周时具有显著性差异，P = 0.018）。
