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The effect of curing with plasma light on the shrinkage of dental restorative materials
Author(s) -
Deb S.,
Mallett R.,
Millar B.
Publication year - 2003
Publication title -
journal of oral rehabilitation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.991
H-Index - 93
eISSN - 1365-2842
pISSN - 0305-182X
DOI - 10.1046/j.1365-2842.2003.01128.x
Subject(s) - shrinkage , curing (chemistry) , polymerization , materials science , composite material , dental composite , dentistry , composite number , medicine , polymer
summary Commercially available light activated dental composites were used in this study to compare the shrinkage following curing with plasma light (Apollo95E, DMDS) and a convention halogen dental curing light (Prismetics Lite II, Dentsply). Polymerization shrinkage was determined by measuring the strain in one dimension by means of a contacting transducer. The percentage linear shrinkage were: Spectrum H = 1·84 + 0·31, P = 1·49 + 0·35*; Ana aesthetic H = 2·04 + 0·38, P = 1·85 + 0·27; Esthet.x H = 1·66 + 0·28, P = 1·69 + 0·25; Dyract AP H = 2·39 + 0·33, P = 2·18 + 0·35*; Apollo Restore H = 1·88 + 0·36, P = 1·42 + 0·33*; Surefil H = 0·88 + 0·28, P = 0·99 + 0·30 where * = significantly different, t ‐test at P < 0·05. The results suggested that there was less shrinkage when curing some, but not all, materials using the plasma light, although this could be attributed to a reduced level of polymerization.