title: Handpiece speed and postoperative outcomes in third molar surgery.
abstract: OBJECTIVE
  This study was performed to assess surgical outcomes when externally irrigated slow-speed surgical handpieces (30,000 rpm) were compared to externally irrigated high-speed handpieces (90,000 rpm) in the removal of impacted lower third molar teeth.
  
  
  METHODS
  One hundred patients with bilater ally impacted third molar s were enrolled in the study; 53 remained to completion. Each patient served as his/her own control. The experimental side was treated using a 30,000 rpm electric rotary drill incorporating irrigation, while the control side was treated using the same drill system, but with a 90,000 rpm handpiece. Drill speeds used were alternated between the right and left sides of patients to avoid bias introduced by the dominant hand of the surgeon. Patients were blinded to drill speed, and were asked to complete a standardized pain/swelling questionnaire for seven days immediately following surgery. Data was analyzed to determine differences in pain, swelling, and complications in relation to the drill type used.
  
  
  RESULTS
  No statistically significant differences were found in degree of pain, swelling, or complications when the slower drill was compared to the high-speed instrument.
  
  
  CONCLUSIONS
  The study suggests that there is no difference in postoperative outcome when impacted third molar teeth are removed with either slow- or high-speed instrumentation, and that the choice of the drill type should be determined solely by the preference of the operator.
authors.affiliation: Indiana University School of Dentistry, Department of Oral Surgery and Hospital Dentistry, USA.
authors.forename: John H
authors.initials: JH
authors.lastname: Campbell
authors.forename: R Anthony
authors.initials: RA
authors.lastname: Murray
mesh_terms: D000704:Analysis of Variance; D016009:Chi-Square Distribution; D003754:Dental High-Speed Equipment; D003755:Dental High-Speed Technique; D006801:Humans; D008964:Molar, Third / Q000601:surgery; D016017:Odds Ratio; D016037:Single-Blind Method; D011795:Surveys and Questionnaires; D014081:Tooth Extraction / Q000295:instrumentation*; D014095:Tooth, Impacted / Q000601:surgery