Allahbakhshi Hanif, Vafaee Fariborz, Lotfazar Mehrdad, Ahangary Ahmad Hasan, Khoshhal Masoumeh, Fotovat Farnoush
Department of Prosthodontics, Faculty of Dentistry, Kashan University of Medical Sciences, Kashan, Iran.
Department of Prosthodontics, Faculty of Dentistry, Hamadan University of Medical Sciences, Hamadan, Iran.
J Dent Res Dent Clin Dent Prospects. 2017 Spring;11(2):78-83. doi: 10.15171/joddd.2017.015. Epub 2017 Jun 21.
Delayed loading is one of the concerns in implant patients. Immediate loading can solve the problem and make patients more satisfied. The present study aimed to compare the removal torque of maxi implants under different loading (immediate and delayed) patterns. This split-mouth experimental study included 2 dogs. Impressions were made and then all the premolars were extracted under general anesthesia. After a three-month healing period, 3 implants were inserted in each quadrant (a total of 12 implants). Anterior and posterior implants (the case group) were splinted by an acrylic temporary bridge in order to make the middle implants (the control group) off the occlusion. The dogs were sacrificed after 6 weeks and bone blocks were submitted for removal torque test. Data were analyzed with ANOVA (P<0.05). Mean torque values for the cases and control groups were 46.82±25.58 and 59.88±15.19, respectively (P=0.582; not significant). It may be concluded that immediate loading does not reduce the reverse torque values of maxi implants. This supports the advantages of immediate loading for maxi implants.
延迟加载是种植患者所关注的问题之一。即刻加载可以解决这个问题并使患者更满意。本研究旨在比较不同加载（即刻和延迟）模式下maxi种植体的拆除扭矩。这项双侧对照实验研究纳入了2只犬。制取印模后，在全身麻醉下拔除所有前磨牙。经过三个月的愈合期后，在每个象限植入3枚种植体（共12枚种植体）。前位和后位种植体（病例组）通过丙烯酸临时桥进行夹板固定，以使中间的种植体（对照组）脱离咬合。6周后处死犬只，取出骨块进行拆除扭矩测试。数据采用方差分析进行分析（P<0.05）。病例组和对照组的平均扭矩值分别为46.82±25.58和59.88±15.19（P=0.582；无显著性差异）。可以得出结论，即刻加载不会降低maxi种植体的反向扭矩值。这支持了maxi种植体即刻加载的优势。
