title: Non-destructive assessment of cavity wall adaptation of class V composite restoration using swept-source optical coherence tomography.
abstract: The purpose of this study was to evaluate gap formations under class V restoration using swept-source optical coherence tomography (SS-OCT). Wedge-shaped cavities were prepared on the buccal surface of 40 extracted premolar teeth at 2 locations; 1) cemento-enamel junction (CEJ) with enamel and cementum margin and 2) root surfaces with cementum margin. The cavity was treated with Clearfil S(3) Bond, restored with Clearfil Majesty and polished with abrasive disks. The specimens were kept in water at 37°C for 24 hours and subjected to a thermocycling procedure. Gap formations at the tooth-restoration interface were measured with SS-OCT image and conventional dye leakage under a microscope. There was no effect of the locations of the cavity and the margins of the cavity on the gap formation. Therefore, a significant effect of the observational methods was observed. The gap formation was 0.89±0.48 mm with the SS-OCT, and the gap formation was 0.34±0.41 mm with the dye leakage. The observation with SS-OCT demonstrated a greater degree of gap formation than the observation with dye leakage.
authors.affiliation: Department of Operative Dentistry, Faculty of Dentistry, Mahidol University, 6 Yothi Street, Rajthevi, Bangkok, Thailand. dtpse@mahidol.ac.th
authors.forename: Pisol
authors.initials: P
authors.lastname: Senawongse
authors.forename: Pong
authors.initials: P
authors.lastname: Pongprueksa
authors.forename: Choltacha
authors.initials: C
authors.lastname: Harnirattisai
authors.forename: Yasunori
authors.initials: Y
authors.lastname: Sumi
authors.forename: Masayuki
authors.initials: M
authors.lastname: Otsuki
authors.forename: Yasushi
authors.initials: Y
authors.lastname: Shimada
authors.forename: Junji
authors.initials: J
authors.lastname: Tagami
mesh_terms: D001641:Bicuspid / Q000033:anatomy & histology; D003188:Composite Resins / Q000737:chemistry*; D003737:Dental Cavity Preparation / Q000145:classification*; D003739:Dental Cementum / Q000033:anatomy & histology; D003743:Dental Enamel / Q000033:anatomy & histology; D003763:Dental Leakage / Q000145:classification; D018772:Dental Marginal Adaptation; D003764:Dental Materials / Q000737:chemistry*; D003775:Dental Polishing / Q000295:instrumentation; D017220:Dentin-Bonding Agents / Q000737:chemistry; D005456:Fluorescent Dyes; D006801:Humans; D019279:Resin Cements / Q000737:chemistry; D012235:Rhodamines; D013499:Surface Properties; D013696:Temperature; D013997:Time Factors; D041623:Tomography, Optical Coherence / Q000379:methods*; D019237:Tooth Cervix / Q000033:anatomy & histology; D014092:Tooth Root / Q000033:anatomy & histology; D014867:Water / Q000737:chemistry
chemical_list: C505694:Clearfil S3 Bond; D003188:Composite Resins; D003764:Dental Materials; D017220:Dentin-Bonding Agents; D005456:Fluorescent Dyes; D019279:Resin Cements; D012235:Rhodamines; C541508:clearfil majesty; D014867:Water; C022027:lissamine rhodamine B