Abstract:

  Background and Aim : Considering the important role of molars in masticatory function and in order to prevent rapid residual ridge resorption in the postextraction phase, it is necessary to replace these teeth in an appropriate way as soon as possible. This study was conducted to evaluate the outcome of immediate tapered wide platform implants instead in molar sockets one year following loading in a private clinic in year 1388- 89.

  Materials &Methods : This descriptive study was carried on 12 samples of first and second molars of 10 patients with average of 46±4.71 years, which had referred on year 1387. Immediately after extraction, tapered platform implants were placed. One year following loading, the stability of implants was evaluated by means of periotest. Clinical evaluation was based on: pain, infection and pus drainage. In order to determine crestal bone changes parallel periapical radiographs were taken. Data were analyzed by t- test .

  Results : none of the samples showed pain, infection, pus drainage or continues radiolucency. The average PTV (perio test value) was-2.81±1.6 with average of -1 to -6 was indicator of no mobility in implants. The average crestal bone change was 0.22±0.01 mm.

  Conclusion : Installation of tapered wide platform implants at the time of molar extraction maybe successful with ideal case selection and proper surgical procedure.

  Keywords : success rate, survival rate, wide diameter & wide platform implants, immediate implantation.