HIGHLIGHTS
SUMMARY
Over the past few years, dental materials and equipment have evolved remarkably, benefiting both dentists and patients by improving the quality of treatments and reducing treatment times. The poor dimensional stability of alginate impression materials when used alone for abutment teeth and the difficulty in reproducing margins have led to the applications of union impressions using alginate and agar for abutment teeth. Basapogu et_al reported that the dimensional accuracy of silicone impression materials had an error ranging from 0.6% to 0.2%; however, the dimensional accuracy was better than that of alginate impression . . .
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