title: Optical properties of paint-on resins for shade modification of crown and bridge resins--light transmittance characteristics--.
abstract: The purpose of this study was to examine the light transmittance characteristics of the paint-on resins for shade modification. Three shades of paint-on resin, one crown and bridge resin, and human enamel were used. Specimens with four different thicknesses (75-150 microm) were prepared. The light transmittances including its wavelength distribution and diffusion characteristics were measured. The color values and the color differences among thicknesses of specimens were also determined. The light transmittance values of the paint-on resins ranged from 60.3% to 88.3% at 100 microm thickness, which were lower or nearly equal in comparison with the crown and bridge resin and enamel. Although differences in the wavelength distribution of transmittance among materials were found at lower wavelengths, all materials showed similar diffusion characteristics. The thin layer of paint-on resin effectively changed the color of restorative resin. The paint-on resin may be an effective material for the modification of the color appearance matching required.
authors: Department of Biomaterials Science, Field of Oral and Maxillofacial Rehabilitation, Course for Developmental Therapeutics, Kagoshima University Graduate School of Medical and Dental Sciences 8-35-1 Sakuragaoka, Kagoshima 890-8544, Japan.
authors: Hiroyuki
authors: H
authors: Arikawa
authors: Takahito
authors: T
authors: Kanie
authors: Koichi
authors: K
authors: Fujii
authors: Tetsuya
authors: T
authors: Homma
authors: Hideo
authors: H
authors: Takahashi
authors: Seiji
authors: S
authors: Ban
mesh_terms: D003116:Color; D003188:Composite Resins / Q000737:chemistry*; D003442:Crowns; D003743:Dental Enamel / Q000033:anatomy & histology; D017267:Dental Prosthesis Design; D003779:Denture Design; D003829:Denture, Partial; D006801:Humans; D008027:Light; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry; D055095:Optics and Photonics; D011092:Polyethylene Glycols / Q000737:chemistry; D011109:Polymethacrylic Acids / Q000737:chemistry; D011140:Polyurethanes / Q000737:chemistry; D019279:Resin Cements / Q000737:chemistry; D012821:Silanes / Q000737:chemistry; D013499:Surface Properties
chemical_list: D003188:Composite Resins; D008689:Methacrylates; D011109:Polymethacrylic Acids; D011140:Polyurethanes; D019279:Resin Cements; D012821:Silanes; C029824:urethane dimethacrylate luting resin; C020946:triethylene glycol dimethacrylate; D011092:Polyethylene Glycols; C057365:Dentacolor