title: The effect of various occlusal reduction levels on postoperative pain in teeth with symptomatic apical periodontitis using computerized analysis: a prospective, randomized, double-blind study.
abstract: OBJECTIVE
  The objective of this study was to evaluate the effect of various occlusal reduction levels on the postoperative pain in teeth diagnosed as symptomatic apical periodontitis by using a computerized analysis system.
  
  
  METHODS
  Thirty-nine molar teeth with symptomatic apical periodontitis were included. After the root canal preparation and filling was performed, the subjects were divided into three groups according to the level of occlusal reduction determined by using T-Scan (T-Scan III for Windows, Tekscan Inc., South Boston, MA) as follows: (1) no reduction (control), (2) semi-reduction, and (3) full-reduction groups. Preoperative and postoperative pain levels using visual analogue scale, percussion pain, and analgesic intake were recorded for each subject. The data were evaluated statistically using two-way analysis of variance and Holm-Sidak post hoc tests at a 95 % confidence level (P = 0.05).
  
  
  RESULTS
  There was no significant difference between the groups in terms of occlusal reduction (P > 0.005).
  
  
  CONCLUSIONS
  Within the limitation of the present study, there were no significant differences among the no reduction, semi-reduction, and full-reduction groups at 1, 3, 5, and 7 days in terms of postoperative pain levels.
  
  
  CONCLUSIONS
  Occlusal reduction, determined using a computerized analysis system, did not influence the postoperative pain in teeth diagnosed as symptomatic apical periodontitis.
authors.affiliation: Department of Endodontics, Faculty of Dentistry, Ataturk University, Erzurum, 35620, Turkey. dt_hakan82@hotmail.com.
authors.forename: Hakan
authors.initials: H
authors.lastname: Arslan
authors.affiliation: Department of Endodontics, Faculty of Dentistry, Ataturk University, Erzurum, 35620, Turkey.
authors.forename: Fatih
authors.initials: F
authors.lastname: Seckin
authors.affiliation: Department of Prosthodontics, Faculty of Dentistry, Ataturk University, Erzurum, Turkey.
authors.forename: Duygu
authors.initials: D
authors.lastname: Kurklu
authors.affiliation: Department of Endodontics, Faculty of Dentistry, Ataturk University, Erzurum, 35620, Turkey.
authors.forename: Ertugrul
authors.initials: E
authors.lastname: Karatas
authors.affiliation: Department of Prosthodontics, Faculty of Dentistry, Ataturk University, Erzurum, Turkey.
authors.forename: Nuran
authors.initials: N
authors.lastname: Yanikoglu
authors.affiliation: Department of Endodontics, Faculty of Dentistry, Izmir Katip Celebi University, Izmir, Turkey.
authors.forename: Ismail Davut
authors.initials: ID
authors.lastname: Capar
mesh_terms: D000293:Adolescent; D000328:Adult; D000700:Analgesics / Q000008:administration & dosage; D004311:Double-Blind Method; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D008963:Molar / Q000601:surgery*; D019558:Occlusal Adjustment; D010147:Pain Measurement; D010149:Postoperative Pain / Q000517:prevention & control*; D010485:Periapical Periodontitis / Q000601:surgery*; D010865:Pilot Projects; D011446:Prospective Studies; D012390:Root Canal Therapy; D014421:Turkey
chemical_list: D000700:Analgesics
keywords: Computerized analysis; Endodontic treatment; Occlusal reduction; Postoperative pain; Root canal treatment; T-Scan