title: Change in the pulp chamber temperature with different stripping techniques.
abstract: BACKGROUND
  The aim of this study is to evaluate the change in pulp chamber temperature during the stripping technique.
  
  
  METHODS
  Seventy-eight proximal surfaces of 39 extracted human teeth were stripped by two techniques: double-sided perforated stripping disk (PSD) and handheld stripper (HS). The teeth were divided into three groups: incisors (group 1), premolars (2), and molars (3). A J type thermocouple was inserted into the pulp chamber for temperature evaluation during the stripping procedure.
  
  
  RESULTS
  Temperature rise was observed in all groups. The average temperature increase for the incisors was 2.58°C (±0.27°C) with PSD and 1.24°C (±0.3°C) with HS; for the premolars, 2.64°C (±0.29°C) with PSD and 0.96°C (±0.39°C) with HS; and for the molars, 2.48°C (±0.38°C) with PSD and 0.92°C (±0.18°C) with HS. There was significant difference (p<0.001) in pulp temperature variation among the stripping techniques evaluated. Greater variations in the temperature were observed for the stripping technique with PSD for all groups (3.1°C in incisors and premolars, 3.2°C in molars). Stripping performed with HS had minor differences in pulp temperature (1.7°C in incisors, 1.9°C in premolars, and 1.2°C in molars) than those in PSD group. However, the temperature variation was less than the critical threshold (5.5°C) in all groups. The results for teeth group comparison showed no significant difference in the temperature variation.
  
  
  CONCLUSIONS
  The stripping technique with PSD produced significant increase in pulp temperature, with no differences between the types of teeth. However, it may not be clinically relevant, and both stripping techniques can be used safely.
authors.forename: José Carlos
authors.initials: JC
authors.lastname: d'Ornellas Pereira
authors.forename: André
authors.initials: A
authors.lastname: Weissheimer
authors.forename: Luciane Macedo
authors.initials: LM
authors.lastname: de Menezes
authors.forename: Eduardo Martinelli Santayana
authors.initials: EM
authors.lastname: de Lima
authors.affiliation: Department of Orthodontics, School of Dentistry, Centro Universitário Franciscano (UNIFRA), Santa Maria, 97015-513, Brazil. mezomo@ortodontista.com.br.
authors.forename: Maurício
authors.initials: M
authors.lastname: Mezomo
mesh_terms: D001641:Bicuspid / Q000502:physiology; D001831:Body Temperature / Q000502:physiology*; D003786:Dental Pulp Cavity / Q000502:physiology*; D019243:Enamel Microabrasion / Q000295:instrumentation* / Q000379:methods; D006801:Humans; D007180:Incisor / Q000502:physiology; D008963:Molar / Q000502:physiology; D013821:Thermometers