The air turbine and hearing loss: Are dentists at risk ...
2002-12-1 · The air-turbine handpiece produced noise levels above 84 decibels in the range between 4,800 and 9,600 hertz, when operated free-running (that is, not on tooth structure). By contrast, the noise level of the belt-driven handpiece was well below levels that are harmful to hearing. Cantwell and colleagues 4 concluded that neither the dentist ...
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