Sujan Kambhampati1, Vaddavalli Subhash2, Chellagulla Vijay3, Aruna Das4. 1. Department of Prosthodontics, Dental College & Hospital, Azamgarh, Uttar Pradesh, India. 2. Department of Orthodontics & Dento-facial Orthopedics, M N R Dental College, Hyderabad, Andhra Pradesh, India. 3. Department of Orthodontics & Dento-facial Orthopedics, Dental College& Hospital, Azamagarh, UttarPradesh, India. 4. Department of Oral Medicine & Radiology, Dental College, Azamgarh, Utttar Pradesh, India.
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. MATERIALS & 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. CONCLUSION: 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.
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. MATERIALS & 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. CONCLUSION: 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.
Entities:
Keywords:
Dimensional changes; polyvinylsiloxanes; profile projector; storage temperature