Authors : Zahra Moshiri, Ghodratollah Roshanaei, Fariborz Vafaei and Mahdi Kadkhodazadeh
Abstract: The purpose of this study was to compare the heat generated from implant drilling using two stainless steel and one ceramic drill. A total of 60 fresh bovine femoral cortical bone samples were used in this study. A constant drill load of 2.0 kg was applied throughout the drilling procedures via a drilling rig at a speed of 1,500 rpm. Three different implant drill types (two stainless steel and one ceramic) were evaluated. Heat was measured with type K thermocouple from 3 different depths. Data were subjected to be three way analysis of variance by newman-koolz multiple comparisons procedure. The significance level was set a priori at 0.05. The mean maximum temperature at the depths of 3, 6 and 9 mm using Drill b (Ø 4.3 ceramic drill (SPI VECTO; Thommen Medical, Waldenburg, Switzerland) were 35.7, 36.7 and 35.3°C so with Drill b mean maximum temperature was higher in 6 mm and lower in 9 mm. The mean maximum temperature at the depths of 3, 6 and 9 mm using Drill c (Ø 4.3 stainless steel (SPI VECTO; Thommen Medical, Waldenburg, Switzerland) )and were 34.3, 34.4 and 33.8°C so with drill c mean maximum temperature was higher in 6 mm and lower in 9 mm. The mean maximum temperature at the depths of 3, 6 and 9 mm using Drill d (Ø 4.2 stainless steel (ITI Straumann, Basel, Switzerland)) were 34.4, 36.5 and 35.2°C so with Drill d mean maximum temperature was higher in 6 mm and lower in 3 mm. The mean maximum temperature was lowest in Drill c at 9 mm depth and it was 33.8°C and was highest for Drill b at 6 mm depth and it was 36.7°C and there was no significant difference between depths 3, 6 and 9 using different surgical drills (p = 0.056). Within the limitations of the study, although more heat was generated in the superficial part of the drilling cavity with the ceramic drill, heat modifications seemed not to be correlated with the drill type whether stainless steel or ceramic, in the deep aspect of the cavity. Further clinical studies are required to determine the effect of drill type on heat generation.
Zahra Moshiri, Ghodratollah Roshanaei, Fariborz Vafaei and Mahdi Kadkhodazadeh, 2013. Evaluation the Effect of Drill Type on Heat Generation in Implant Drilling Site. Research Journal of Medical Sciences, 7: 118-122.