PMID- 29515053 OWN - NLM STAT- MEDLINE DCOM- 20181211 LR - 20181211 IS - 1881-1361 (Electronic) IS - 0287-4547 (Linking) VI - 37 IP - 2 DP - 2018 Mar 30 TI - Enamel margins resealing by low-viscosity resin infiltration. PG - 350-357 LID - 10.4012/dmj.2017-153 [doi] AB - This study evaluated low-viscosity resin potential as enamel marginal gap sealant for existing composite restoration. Standard restorations with marginal gaps were created in bovine teeth; gaps were resealed using G-Bond Plus (GB, GC, Tokyo, Japan) or Icon (ICN, DMG, Hamburg, Germany) with or without HCl pretreatment (n=8). Swept-source optical coherence tomography (SS-OCT) images were taken before and after resealing of the margin and thermal cycling to calculate enamel marginal gap extent. Cross-sectional microscopy was performed to confirm SS-OCT findings. SS-OCT showed remarkable reduction of backscatter signal at enamel margins after application of the low-viscosity resin. Enamel margin resealing significantly decreased gap and there was a significant difference between ICN (regardless of HCl pretreatment) and GB, while thermal cycling increased gaps (p<0.05). The low-viscosity resin could effectively infiltrate micro-gaps at enamel margins and improve sealing of an existing composite restoration. Resin infiltration is a viable option for resealing intact restorations with open margins. FAU - Espigares, Jorge AU - Espigares J AD - Cariology and Operative Dentistry Department, Division of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University. FAU - Hayashi, Juri AU - Hayashi J AD - Cariology and Operative Dentistry Department, Division of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University. FAU - Shimada, Yasushi AU - Shimada Y AD - Department of Operative Dentistry, Graduate School of Medicine and Dentistry, Okayama University. FAU - Tagami, Junji AU - Tagami J AD - Cariology and Operative Dentistry Department, Division of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University. FAU - Sadr, Alireza AU - Sadr A AD - Biomimetics Biomaterials Biophotonics Biomechanics & Technology (B4T) laboratory, Department of Restorative Dentistry, University of Washington School of Dentistry. LA - eng PT - Journal Article DEP - 20180306 PL - Japan TA - Dent Mater J JT - Dental materials journal JID - 8309299 RN - 0 (Composite Resins) RN - 0 (G-Bond) RN - 0 (Methacrylates) RN - 0 (Resins, Synthetic) RN - 0 (icon infiltrant) MH - Acid Etching, Dental MH - Animals MH - Cattle MH - Composite Resins/*chemistry MH - Dental Enamel/*drug effects MH - *Dental Marginal Adaptation MH - *Dental Restoration, Permanent MH - In Vitro Techniques MH - Methacrylates MH - Microscopy, Confocal MH - Microscopy, Electron, Scanning MH - Resins, Synthetic MH - Tomography, Optical Coherence MH - Viscosity OTO - NOTNLM OT - Hydrochloric acid OT - Resealing OT - Resin infiltration OT - SS-OCT EDAT- 2018/03/09 06:00 MHDA- 2018/12/12 06:00 CRDT- 2018/03/09 06:00 PHST- 2018/03/09 06:00 [pubmed] PHST- 2018/12/12 06:00 [medline] PHST- 2018/03/09 06:00 [entrez] AID - 10.4012/dmj.2017-153 [doi] PST - ppublish SO - Dent Mater J. 2018 Mar 30;37(2):350-357. doi: 10.4012/dmj.2017-153. Epub 2018 Mar 6.