@Article{, title={Linear setting expansion of three different types of dental stones Available in Iraqi market , a comparative study.}, author={Dr.Ghassan A. Al-Taie B.D.S., M.Sc د. غسان الطائي and Dr.Abdalbasit A. Fatihallah B.D.S., M.Sc د. عبد الباسط فضل الله and Dr. Widad A. Al-Nakkash B.D.S., M.Sc. د.وداد النقاش}, journal={MUSTANSIRIA DENTAL JOURNAL مجلة المستنصرية لطب الاسنان}, volume={3}, number={1}, pages={103-106}, year={2006}, abstract={Aims of the study: To identify the must appropriate type of dental stone produceswith minimal setting expansionMaterials and methods: Three typee of dental stone compared, two groupsproduced depending on the mixing ratio so that the setting expansion values obtainedby the aids of extensometer then compare them statistically.Results and discussion: Comparing setting expansion within each group thelowest setting expansion found in Elite model stone while the highest value in SilkyRock model, in Q.D. dental stone While comparing the two groups with each othershows no considerable changes take place due to increase in the W/P ratioConclusion: Increasing the W/P ratio to a considerable limit results in a minimalchanges in the setting expansion for Silky Rock stone, while for Q.D. dental stone &Elite model the setting expansion decreased. Heat generated from the mixture didn'taffected by the changes in W/P ratio.

} }