Thermal hazards in mastoid surgery: an evaluation of instruments and irrigation techniques.
Study of the mechanical properties of three commonly used mastoid drills disclosed major differences in their power and potential for heat production. Based on available information regarding heat tolerance of neural tissue, all drills were found capable of producing hazardous temperature elevations. After testing several irrigation techniques, continuous and copious suction irrigation was found to be most effective in preventing bone heating.
D001696:Biomechanical Phenomena; D001831:Body Temperature; D007758:Ear, Inner / Q000502:physiology; D005154:Facial Nerve / Q000502:physiology; D006358:Hot Temperature; D006801:Humans; D008416:Mastoid / Q000601:surgery*; D013396:Suction / Q000379:methods*; D013525:Surgical Instruments / Q000009:adverse effects*; D007507:Therapeutic Irrigation / Q000379:methods*