Document Details Document Type : Article In Journal  Document Title : Noise level of dental handpieees and laboratory engines Noise level of dental handpieees and laboratory engines   Document Language : English  Abstract : Impaired hearing in dental practitioners has been the subject of various investiga- tions. Although individual age and susceptibility can play a signincant rola, the intensity of the noise, distance from The noise source, and total duration of the noise are the important factors in hearing. In this study the noise levels of different handpieees and laboratory engines were evaluated. Handpiece noise measurements were made while instruments were running free and during operation with various cutting tools. These measurements were performed with two kinds of noise- measuring equipment; (1) a precision sound level meter and (2) a noise recording and analyzing circuit. The results indicated that (1) there were significant differ- ences among the noise levels of the various dental engines used, (2) the low-speed, angled-design handpiece has the lowest noise level, whereas the laboratory engine has the highest, (3) the noise level increases during cutting was compared with noncutting , and (4) there was no significant difference between the two methods of measurement. (J PROSTHET DENT 1993;70:356-60.)  ISSN : 0  Journal Name : The Journal Of Prosthetic Dentistry  Volume : 70  Issue Number : 4  Publishing Year : 1993 AH 1993 AD  Article Type : Article  Added Date : Saturday, June 21, 2008  Researchers Researcher Name (Arabic) Researcher Name (English) Researcher Type Dr Grade Email سلمى باحنان Bahnnan, Salma Investigator Doctorate Sbahnnan@kau.edu.sa أحمد عبد الحميد Abed El-Hamid, Ahmed Researcher Doctorate   Files File Name Type Description  Noise level of dental handpieees and laboratory engines.pdf pdf   Back To Researches Page