INFLUENCE OF TEMPRATURE MOISTURE AND TIME ON DIMENSIONAL CHANGE OF STONE TYPE IV

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SAHEBI S.M.; ROCNI SH.

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Paper Information

Journal: Journal of Dental Medicine Year:2004 | Volume:17 | Issue:2 (39) Page(s): 94-100

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Title

INFLUENCE OF TEMPRATURE MOISTURE AND TIME ON DIMENSIONAL CHANGE OF STONE TYPE IV

Author(s)

SAHEBI S.M. | ROCNI SH. | Issue Writer Certificate

Keywords

DIMENSIONAL CHANGEQ2

EXPANSIONQ2

IMPRESSIONQ3

Abstract

Statement of Problem: Different temperature and moisture around Iran and wide usage of stone type IV in dental laboratories in our country were the reasons for us for doing this study. Purpose: In this survey the effect of temperature, moisture and time on DIMENSIONAL CHANGE of dental stone type IV (Velmix) were investigated. Materials and Methods: In this experimental study cube shape Metal models (10×10×10 mm) was made for Taking IMPRESSION. We used special tray, which has ten holes (15×20×25 mm) and made IMPRESSION with condensational silicone in two-step procedure, and poured it with stone type IV. Stone cubes were divided to different groups. 3 groups holed in fix moisture and variable tempraure and 5 groups in fix temperature and variable moisture. After 2 hours, 24 hours and one-week dimension of stone cubes were measured. Then analysis was done with ANOVA and dauncan.Results: The following conclusions were achieved:1-Time has no effect on DIMENSIONAL CHANGEs.2-Tempreture and moisture has some effect on DIMENSIONAL CHANGEs in stone IV.Increasing of temperature result in stone contraction and increasing in moisture result in stone EXPANSION. Conclusion: The best temperature for least DIMENSIONAL CHANGE is 20°C and the best moisture for a least DIMENSIONAL CHANGE is 30%.

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APA: Copy

SAHEBI, S.M., & ROCNI, SH.. (2004). INFLUENCE OF TEMPRATURE MOISTURE AND TIME ON DIMENSIONAL CHANGE OF STONE TYPE IV. JOURNAL OF DENTAL MEDICINE, 17(2 (39)), 94-100. SID. https://sid.ir/paper/25606/en

Vancouver: Copy

SAHEBI S.M., ROCNI SH.. INFLUENCE OF TEMPRATURE MOISTURE AND TIME ON DIMENSIONAL CHANGE OF STONE TYPE IV. JOURNAL OF DENTAL MEDICINE[Internet]. 2004;17(2 (39)):94-100. Available from: https://sid.ir/paper/25606/en

IEEE: Copy

S.M. SAHEBI, and SH. ROCNI, “INFLUENCE OF TEMPRATURE MOISTURE AND TIME ON DIMENSIONAL CHANGE OF STONE TYPE IV,” JOURNAL OF DENTAL MEDICINE, vol. 17, no. 2 (39), pp. 94–100, 2004, [Online]. Available: https://sid.ir/paper/25606/en

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