title: Influence of glass-ionomer cement on the interface and setting reaction of mineral trioxide aggregate when used as a furcal repair material using laser Raman spectroscopic analysis.
abstract: The prolonged setting time of mineral trioxide aggregate (MTA) is the main disadvantage of this material. This study analyzes the influence of glass-ionomer cement on the setting of MTA using laser Raman spectroscopy (LRS). Forty hollow glass molds were taken in which MTA was placed. In Group I specimens, MTA was layered with glass-ionomer cement after 45 minutes. Similar procedures were done for Groups II and III at 4 hours and 3 days, respectively. No glass ionomer was added in Group IV, which were then considered as control samples. Each sample was scanned at various time intervals. At each time interval, the interface between MTA and glass-ionomer cement was also scanned (excluding Group IV). The spectral analysis proved that placement of glass-ionomer cement over MTA after 45 minutes did not affect its setting reaction and calcium salts may be formed in the interface of these two materials.
authors.affiliation: Department of Conservative Dentistry and Endodontics, Meenakshi Dental College, Maduravoyal, Chennai-95, Tamil Nadu, India. nandini_80@hotmail.com
authors.forename: Suresh
authors.initials: S
authors.lastname: Nandini
authors.forename: Suma
authors.initials: S
authors.lastname: Ballal
authors.forename: Deivanayagam
authors.initials: D
authors.lastname: Kandaswamy
mesh_terms: D017607:Aluminum Compounds / Q000737:chemistry* / Q000627:therapeutic use; D017610:Calcium Compounds / Q000737:chemistry* / Q000627:therapeutic use; D002126:Calcium Hydroxide / Q000032:analysis; D004338:Drug Combinations; D005899:Glass Ionomer Cements / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry* / Q000627:therapeutic use; D012117:Resins, Synthetic / Q000737:chemistry*; D012387:Root Canal Filling Materials / Q000737:chemistry* / Q000627:therapeutic use; D017640:Silicates / Q000032:analysis / Q000737:chemistry* / Q000627:therapeutic use; D013059:Spectrum Analysis, Raman / Q000379:methods; D013997:Time Factors; D018677:Tooth Injuries / Q000628:therapy*; D014092:Tooth Root / Q000293:injuries
chemical_list: D017607:Aluminum Compounds; D017610:Calcium Compounds; D004338:Drug Combinations; C079765:Fuji II LC cement; D005899:Glass Ionomer Cements; D010087:Oxides; D012117:Resins, Synthetic; D012387:Root Canal Filling Materials; D017640:Silicates; C086631:mineral trioxide aggregate; D002126:Calcium Hydroxide