title: [Assessment of application of computerized local anesthetic delivery system in periodontal ligament injection].
abstract: OBJECTIVE
  To assess the pain intensity and anesthetic effect in peridontal ligament injection using the computerized local anesthetic delivery system made by Milestone company in USA.
  
  
  METHODS
  40 cases were selected,and comparing the periodontal ligament injection through using the computerized local anesthetic delivery with traditional manul local anesthesia.
  
  
  RESULTS
  By using the computerized local anesthetic delivery system the pain in peridontal ligament injection was significantly less than traditional methods. There was no difference in anesthetic effect when teeth were extracted.
  
  
  CONCLUSIONS
  The peridontal ligament injection usually as an adjunctive anesthesia method could attain good anesthetic effect and would have a wide application by using the computerized local anesthetic delivery system.
authors.affiliation: Department of Oral and Maxillofacial, Ninth People's Hospital, Shanghai Second Medical University, Shanghai 200011, China.
authors.forename: C Y
authors.initials: CY
authors.lastname: Xue
authors.forename: W
authors.initials: W
authors.lastname: Guo
authors.forename: W J
authors.initials: WJ
authors.lastname: Zhang
authors.forename: Y
authors.initials: Y
authors.lastname: Wang