title: Development of new photopolymerizable dental sealants.
abstract: This paper describes the results obtained in the optimization of the composition of dental sealants in relation to the nature and proportions of monomer mixtures and photoinitiating system employed. The quantification and variation of certain parameters which determine the quality of a dental sealant (such as viscosity and penetrating power, residual double bonds, solubility and absorption, volume shrinkage and certain specific mechanical properties) have resulted in the development of new formulations. The composition which has achieved the best results of all the above properties was that corresponding to the monomer mixture bis-GMA/tri(ethylene glycol) dimethacrylate (TEGDMA) 40/60 wt%, and the photoinitiating system camphorquinone (CQ) with co-initiators N,N,3,5-tetramethyaniline (TMA) or N,N-dimethyl-p-toluidine (DMPT) in the ratio 1:1. The final properties and characteristics of the obtained formulations are superior to those of commercial dental sealants currently in use.
authors.affiliation: Centro de Biomateriales, Universidad de la Habana, Cuba.
authors.forename: N
authors.initials: N
authors.lastname: Davidenko
authors.forename: M E
authors.initials: ME
authors.lastname: Cohen
authors.forename: J M
authors.initials: JM
authors.lastname: Diaz
authors.forename: R
authors.initials: R
authors.lastname: Sastre
mesh_terms: D000042:Absorption; D000814:Aniline Compounds / Q000737:chemistry / Q000528:radiation effects; D017438:Bisphenol A-Glycidyl Methacrylate / Q000737:chemistry* / Q000528:radiation effects; D003188:Composite Resins / Q000737:chemistry / Q000528:radiation effects; D003720:Densitometry; D004548:Elasticity; D008027:Light; D000432:Methanol / Q000737:chemistry; D017319:Photosensitizing Agents / Q000737:chemistry*; D010895:Pit and Fissure Sealants / Q000737:chemistry*; D011092:Polyethylene Glycols / Q000737:chemistry* / Q000528:radiation effects; D011108:Polymers / Q000528:radiation effects*; D011109:Polymethacrylic Acids / Q000737:chemistry* / Q000528:radiation effects; D012995:Solubility; D017550:Spectroscopy, Fourier Transform Infrared; D013314:Stress, Mechanical; D013729:Terpenes / Q000737:chemistry / Q000528:radiation effects; D014052:Toluidines / Q000737:chemistry / Q000528:radiation effects; D014783:Viscosity
chemical_list: D000814:Aniline Compounds; D003188:Composite Resins; D017319:Photosensitizing Agents; D010895:Pit and Fissure Sealants; D011108:Polymers; D011109:Polymethacrylic Acids; D013729:Terpenes; D014052:Toluidines; C020946:triethylene glycol dimethacrylate; D011092:Polyethylene Glycols; D017438:Bisphenol A-Glycidyl Methacrylate; C048339:camphoroquinone; C015835:dimethyl-4-toluidine; C021313:methylaniline; D000432:Methanol