title: The effect of cooling techniques on intrapulpal temperature during direct fabrication of provisional restorations.
abstract: In vitro measurements were made of the heat transferred to the pulp chamber during the direct fabrication of extracoronal provisional restorations. The temperature was monitored for the following four groups: (1) control--the provisional restoration was left on the tooth with no coolant used; (2) removal--the provisional restoration was removed upon initial resin polymerization; (3) in situ--the provisional restoration was left in place and cooled with an air/water spray; and (4) on/off--the provisional restoration was repeatedly removed and replaced upon initial polymerization while using an air/water spray. The intrapulpal temperature rises were as follows: control 7.08 degrees C, removal 2.39 degrees C, in situ 2.36 degrees C, and on/off 3.12 degrees C. The temperature rise for all cooling techniques was significantly lower than that of the control. No significant differences were found between the three cooling techniques.
authors.affiliation: Division of Fixed Prosthodontics, College of Dentistry, University of Saskatchewan, Saskatoon.
authors.forename: M B
authors.initials: MB
authors.lastname: Moulding
authors.forename: R W
authors.initials: RW
authors.lastname: Loney
mesh_terms: D000180:Acrylic Resins; D001831:Body Temperature; D003080:Cold Temperature; D003782:Dental Pulp; D003794:Dental Restoration, Temporary / Q000379:methods*; D006358:Hot Temperature; D006801:Humans; D007036:Hypothermia, Induced / Q000379:methods; D008768:Methylmethacrylates; D003765:Models, Dental
chemical_list: D000180:Acrylic Resins; D008768:Methylmethacrylates; C034578:Duralay