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Article
The Significance of Motor Speed on Heat Generation During Implant Drilling (Experimental Study on Bovine Bone)

Author: Abdul Hameed N Aldabagh
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2009 Volume: 9 Issue: 2 Pages: 303-306
Publisher: Mosul University جامعة الموصل

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Abstract

Aims: To measure the heat generated from 3 drilling speeds (1250,2000, and 2500 rpm) using the armamentarium
of ELIT implant systems. Materials and methods: Temperature was measured with
thermocouple technology in vitro using the bovine femoral cortical bone model. Intermittent drilling
was accomplished by using normal hand force that used in implant preparations. External irrigation at
40 mL/min with normal saline was used with drilling depth at a depth of 7mm and diameter 3.75. Heat
measurements were recorded after final drilling step. Results: Result showed temperature increases
related to the time of drilling and the speed of 2500 rpm accompanied with lowest temperature. Conclusions:
From a heat generation, we concluded that preparing an implant site at 2500 rpm could decrease
the risk of bone damage, which may affect the initial healing of dental implants. This may decrease
the devital zone adjacent to an implant after surgery.

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Article
The Bactericidal Effect Of Erbium, Chromium: Yttrium Scandium Gallium Garnet Laser On Contaminated SandBlasted, Large Grit, Acid-Etched Dental

Authors: Abdul Hameed N. Aldabagh --- Mohammed K. Hassouni
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2016 Volume: 16 Issue: 1 Pages: 67-76
Publisher: Mosul University جامعة الموصل

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Abstract

Aims: The purpose of this study was to estimate the bactericidal effect of erbium,chromium:yttrium scandium gallium garnet 2,780nm (Er, Cr:YSGG) on contaminated sand-blasted, large grit, acid-etched (SLA) dental implant and determine the parameter that effectively detoxify the surface of implant ailed with periimplantitis before regenerative therapy of the area. Material and Methods: Implants (3.4*10mm) with SLA surfaces fixed with Enterococcus faecalis and irradiated with Er,Cr:YSGG lasers. After laser treatments, the number of remaining colony-forming units (CFUs) counted. The entire implant surface exposed uniformly in constant time and different energies. six powers were used ( 0.25, 0.5, 0.75, 1, 1.25, 1.5watt ) at 20 Hz, water 20%, air 40% with movable motions on each thread for 30 second and in non contact mode at 2 mm distance between MZ10 tip and target with H mode. Results: laser showed total bacteria reduction on the implants irradiated with 1.5W. Significant differences between measurements in the different groups at (P<0.05) were observed, depending on the used power. Conclusions: Er,Cr:YSGGlaser can be used at above parameter safelyon implant surface as disinfection tool in treatment of peri-implantitis

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