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Titolo:
Microleakage of adhesive restorative materials
Autore:
Gladys, S; Van Meerbeek, B; Lambrechts, P; Vanherle, G;
Indirizzi:
Catholic Univ Louvain, Sch Dent Oral Pathol & Maxillofacial Surg, Dept Operat Dent & Dent Mat, B-3000 Leuven, Belgium Catholic Univ Louvain Leuven Belgium B-3000 Mat, B-3000 Leuven, Belgium
Titolo Testata:
AMERICAN JOURNAL OF DENTISTRY
fascicolo: 3, volume: 14, anno: 2001,
pagine: 170 - 176
SICI:
0894-8275(200106)14:3<170:MOARM>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
GLASS-IONOMER CEMENT; DENTIN BOND STRENGTH; MARGINAL LEAKAGE; COMPOSITE RESIN; STRESS; CONTRACTION; SHRINKAGE; INVITRO;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
59
Recensione:
Indirizzi per estratti:
Indirizzo: Gladys, S Catholic Univ Louvain, Sch Dent Oral Pathol & Maxillofacial Surg, Dept Operat Dent & Dent Mat, Kapucijnenvoer 7, B-3000 Leuven, Belgium Catholic Univ Louvain Kapucijnenvoer 7 Leuven Belgium B-3000 um
Citazione:
S. Gladys et al., "Microleakage of adhesive restorative materials", AM J DENT, 14(3), 2001, pp. 170-176

Abstract

Purpose : To compare the marginal sealing ability of two conventional and one polyacid-modified resin-based composite, and two conventional and threeresin-modified glass-ionomers in conventional cylindrical box cavities following a silver-staining microleakage evaluation method. Materials and Methods: In 80 freshly extracted and caries-free human third molars, three standardized cylindrical butt-joint cavities were prepared: the first cavity incoronal enamel, the second at the cemento-enamel junction (CEJ) and the third completely in root cementum. A control group of 10 additional teeth waschosen. After the cavities were restored randomly using the eight restorative materials tested, the specimens were first stored in distilled water at37 degreesC for 7 days and then thermocycled (500 cycles). Thereafter, thespecimens were centrifuged for 10 min in plastic bottles containing 50 wt%silver nitrate aqueous solution. The degree of microleakage was recorded at four different depths along the restoration margins using an optical stereomicroscope equipped with a measuring gauge. Results: None of the tested systems prevented microleakage completely, but the extent of leakage decreased towards the bottom of the restorations. The resin-modified glass-ionomers performed better than the conventional resin-based composites and conventional glass-ionomers.

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Documento generato il 24/06/18 alle ore 17:06:28