title: [Study on conversion degree of double bonds of dental composites by Fourier transform infrared spectroscope].
abstract: Conversion degrees (CDs) of double bonds of 8 dental composites were measured by Fourier transform infrared spectroscope. Also, effects of disc-sampling method and film-sampling method on CD were compared. The results showed that CDs of 8 composites ranged from 45% to 75%. CDs of visible-light-cured (VLC) composites were higher than those of chemically-cured (CC) ones. In VLC composites, those with hybrid fillers had higher CDs than those with superfine fillers. In VLC composites, CDs obtained by disc-sampling method were higher than by film-sampling method; in CC composites, there were no differences between CDs obtained by both sampling methods.
authors.affiliation: Stomatological Department of No. 359 Hospital of PLA, Zhenjiang 212001.
authors.forename: J
authors.initials: J
authors.lastname: Wang
authors.forename: D
authors.initials: D
authors.lastname: Cheng
authors.forename: C
authors.initials: C
authors.lastname: Shi
mesh_terms: D003188:Composite Resins / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared
chemical_list: D003188:Composite Resins