title: Effect of temperature changes on the dimensional stability of elastomeric impression materials.
abstract: BACKGROUND
  The purpose of this study was to evaluate the changed dimensions of dies obtained from impressions made with different combinations of addition sillicones which were subjected to variations in storage temperature.
  
  
  METHODS
  45 die stone models were obtained of 45 impressions of which 15 each were stored at three different storage temperatures(25°C, 37°C and 42°C). 15 impressions each were made using one impression technique. The measurements of the dies made from the impressions were measured with the help of Profile Projector with a accuracy of 0.001mm.
  
  
  RESULTS
  The results were statistically analyzed. The results indicated the significant decrease in dimensions when the storage temperature reduced from the mouth temperature. As compared to this there was a marginal increase in overall dimensions of all variables when storage temperature increased.
  
  
  CONCLUSIONS
  More changes were seen in putty/light body combination followed by monophase and least in heavy/light body combination. How to cite the article: Kambhampati S, Subhash V, Vijay C, Das A. Effect of temperature changes on the dimensional stability of elastomeric impression materials. J Int Oral Health 2014;6(1):12-9.
authors.affiliation: Department of Prosthodontics, Dental College & Hospital, Azamgarh, Uttar Pradesh, India.
authors.forename: Sujan
authors.initials: S
authors.lastname: Kambhampati
authors.affiliation: Department of Orthodontics & Dento-facial Orthopedics, M N R Dental College, Hyderabad, Andhra Pradesh, India.
authors.forename: Vaddavalli
authors.initials: V
authors.lastname: Subhash
authors.affiliation: Department of Orthodontics & Dento-facial Orthopedics, Dental College& Hospital, Azamagarh, UttarPradesh, India.
authors.forename: Chellagulla
authors.initials: C
authors.lastname: Vijay
authors.affiliation: Department of Oral Medicine & Radiology, Dental College, Azamgarh, Utttar Pradesh, India.
authors.forename: Aruna
authors.initials: A
authors.lastname: Das
keywords: Dimensional changes; polyvinylsiloxanes; profile projector; storage temperature