title: Piezoelectric ultrasonic bone surgery system in the extraction surgery of supernumerary teeth.
abstract: BACKGROUND
  The anterior maxillary region is a common site for supernumerary teeth. The aim of this study was to compare the use of piezoelectric ultrasonic bone surgery for the extraction of supernumerary teeth and the use of traditional method using bone chisels.
  
  
  METHODS
  60 patients with supernumerary anterior maxillary teeth were considered in this study. They were randomly divided into two groups: 1) the control group, in which the supernumerary teeth were extracted using the traditional bone chisels method; 2) the experimental group, in which the supernumerary teeth were extracted using a piezoelectric ultrasonic bone surgery system. The operative time, amount of bleeding and post-operative pain were quantified and compared; in addition, the post-operative swelling was evaluated.
  
  
  RESULTS
  We observed a significant decrease (P < 0.01) in the amount of bleeding and post-operative pain in the experimental group respect to the control group; but the operative time was significantly increased (P < 0.01) with the use of piezoelectric system. In addition, post-operative swelling resolved more quickly in the experimental group.
  
  
  CONCLUSIONS
  Although the operative time for the extraction of the maxillary anterior supernumerary teeth was longer using the piezoelectric ultrasonic bone surgery system, the amount of bleeding and the post-operative complications were less, so this system could be considered an appropriate surgical method for the extraction of supernumerary teeth.
authors.affiliation: Department of Stomatology, Longgang District Central Hospital, Affiliated of Zunyi Medical College, Shenzhen, Guangdong, China.
authors.forename: Yongbo
authors.initials: Y
authors.lastname: Gao
authors.affiliation: Zunyi Medical College, Zunyi, Guizhou, China.
authors.forename: Zhenyan
authors.initials: Z
authors.lastname: Lin
authors.affiliation: Section of Anatomy and Physiopathology, Department of Clinical and Experimental Sciences, University of Brescia, Brescia, Italy.
authors.forename: Luigi Fabrizio
authors.initials: LF
authors.lastname: Rodella
authors.affiliation: Section of Anatomy and Physiopathology, Department of Clinical and Experimental Sciences, University of Brescia, Brescia, Italy.
authors.forename: Barbara
authors.initials: B
authors.lastname: Buffoli
authors.affiliation: Department of Stomatology, Longgang District People's Hospital, Shenzhen, Guangdong, China.
authors.forename: Xifeng
authors.initials: X
authors.lastname: Wu
authors.affiliation: School of Stomatology (Prof. Yanmin Zhou), Jilin University, 1500 Qinghua Road, Changchun 130021, Jilin, China. Electronic address: zhouym62@126.com.
authors.forename: Yanmin
authors.initials: Y
authors.lastname: Zhou
mesh_terms: D000293:Adolescent; D000328:Adult; D016063:Blood Loss, Surgical; D002648:Child; D054893:Cone-Beam Computed Tomography / Q000379:methods; D004487:Edema / Q000209:etiology; D005260:Female; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods; D008297:Male; D008437:Maxilla / Q000601:surgery*; D008875:Middle Aged; D061646:Operative Time; D010147:Pain Measurement / Q000379:methods; D010149:Postoperative Pain / Q000209:etiology; D059745:Piezosurgery / Q000295:instrumentation / Q000379:methods*; D011183:Postoperative Complications; D014081:Tooth Extraction / Q000295:instrumentation / Q000379:methods*; D014096:Tooth, Supernumerary / Q000601:surgery*; D055815:Young Adult
keywords: Maxillary anterior region; Piezoelectric surgery; Supernumerary teeth