Biomaterial Database

[Scanning electron microscopy of marginal fitting of composite resin fillings]. 1999

M Székely, and I Bocskay

Orvosi és Gyógyszerészeti Egyetem, Fogorvosi Kar, Fogászati Propedeutika és Anyagtan Tanszék.

The aim of the present in vitro study was to evaluate the marginal gap formation of composite restorations. Class V. cavities were prepared on the buccal surfaces of 30 human teeth and restored with Prime & Bond 2.1 (Spectrum TPH and Syntac Single-Component) Tetric. The specimens were examined by scanning electron microscope (SEM). By measurement of marginal gap dimensions this study aimed at comparing the marginal fitting and bonding potentials of current generation composite resins and adhesive systems. The data were analyzed by a two-sample t-test. No significant differences were detected (p < 0.001) between the two groups. The specimens showed very narrow gaps of 0-5 microns thickness and 60% of the composite fillings presented gap-free attachment to enamel. These results may have significant implications related to clinical longevity of composite restorations.

UI	MeSH Term	Description	Entries
D008854	Microscopy, Electron	Microscopy using an electron beam, instead of light, to visualize the sample, thereby allowing much greater magnification. The interactions of ELECTRONS with specimens are used to provide information about the fine structure of that specimen. In TRANSMISSION ELECTRON MICROSCOPY the reactions of the electrons that are transmitted through the specimen are imaged. In SCANNING ELECTRON MICROSCOPY an electron beam falls at a non-normal angle on the specimen and the image is derived from the reactions occurring above the plane of the specimen.	Electron Microscopy
D003188	Composite Resins	Synthetic resins, containing an inert filler, that are widely used in dentistry.	Composite Resin,Resin, Composite,Resins, Composite
D003793	Dental Restoration, Permanent	A restoration designed to remain in service for not less than 20 to 30 years, usually made of gold casting, cohesive gold, or amalgam. (Jablonski, Dictionary of Dentistry, 1992)	Dental Fillings, Permanent,Dental Filling, Permanent,Dental Permanent Filling,Dental Permanent Fillings,Dental Restorations, Permanent,Filling, Dental Permanent,Filling, Permanent Dental,Fillings, Dental Permanent,Fillings, Permanent Dental,Permanent Dental Filling,Permanent Dental Fillings,Permanent Dental Restoration,Permanent Dental Restorations,Permanent Filling, Dental,Permanent Fillings, Dental,Restoration, Permanent Dental,Restorations, Permanent Dental
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D066298	In Vitro Techniques	Methods to study reactions or processes taking place in an artificial environment outside the living organism.	In Vitro Test,In Vitro Testing,In Vitro Tests,In Vitro as Topic,In Vitro,In Vitro Technique,In Vitro Testings,Technique, In Vitro,Techniques, In Vitro,Test, In Vitro,Testing, In Vitro,Testings, In Vitro,Tests, In Vitro,Vitro Testing, In