Advanced Search

Home > Journals > Minerva Stomatologica > Past Issues > Minerva Stomatologica 2002 September;51(9) > Minerva Stomatologica 2002 September;51(9):371-6

ISSUES AND ARTICLES   MOST READ   eTOC

CURRENT ISSUEMINERVA STOMATOLOGICA

A Journal on Dentistry and Maxillofacial Surgery

Official Journal of the Italian Society of Odontostomatology and Maxillofacial Surgery
Indexed/Abstracted in: CAB, EMBASE, Index to Dental Literature, PubMed/MEDLINE, Scopus, Emerging Sources Citation Index

Frequency: Bi-Monthly

ISSN 0926-4970

Online ISSN 1827-174X

 

Minerva Stomatologica 2002 September;51(9):371-6

    ORIGINAL ARTICLES

In vitro evaluation of the chromatic stability in composites of new generation

De Lillo A., Lombardo S., Chiadò Cutin D., Pirri F., Carossa S.

Background. Ultraviolet light exposure produces chromatic changes in composites used for esthetic restoration. The aim of the study was to compare the chromatic changes induced by accelerated aging in two composites of new generation: Tetric Ceram and Diamond Crown.
Methods. Five samples were prepared for each composite, each divided into two pieces, one exposed to accelerated aging obtained by ultraviolet-light exposure for 24 hours, and one maintained in dark. Thereafter, the samples were lighted by a light beam and the percentage of reflected light was assessed. The distribution of the levels of red, green and blue was assessed using a camera connected to a PC with a software for image processing.
Results. For both the composites, the values of the three colors were significantly lower in the samples artificially aged (p<0.0001). The values concerning to the Tetric Ceram were significantly lower than those of Diamond Crown (p<0.0001). The latter showed aging-induced variation significantly smaller than the former.
Conclusions. Both the composites showed significant chromatic variations after 24 hours artificial aging. Diamond Crown showed significantly better stability.

language: Italian


FULL TEXT  REPRINTS

top of page