Perobahan dimensi hasil cetakan alginat berbentuk balok

• Main Author: Sumadhi Sastrodihardjo
• Format: Article
• Language: English
• Published: Hasanuddin University 2008-04-01
• Series: Journal of Dentomaxillofacial Science
• Subjects: Impression, dimensional changes.
• Online Access: http://jdmfs.org/index.php/jdmfs/article/view/195

There are several causal possibilities developing dimensional changes on impression such as type of impression materials used, impression taking technique, bulk of impression material or size of impression tray. In this study investigation was done on the size of impression material used to elucidate the possibilities role of impression material in gaining dimensional changes of impression. Rectangle shape alginate impressions were made in 29.57 mm length, 19.45 mm width and 9.67 mm thickness mold of metal master die covered by glass plate and dimensional changes are measured on alginate impression itself. Then data were analyzed with T-test (paired samples test)to compare dimension changing between alginat height and dimension changing on length and width. Measured results show the dimensional changes occur 3.16% ± 0.63% on length side, 3.35% ± 0.42% on width side and 10.87% ± 1.01% on thickness side, respectively. There are significantly differences of dimensional changes on thick ness side covered by glass plate compared with dimensional changes on length and width sides surrounding by metal of master die.