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Titolo:
Role of hybridization on marginal leakage and bond strength
Autore:
Ferrari, M; Mason, PN; Vichi, A; Davidson, CL;
Indirizzi:
Univ Siena, I-53100 Siena, Italy Univ Siena Siena Italy I-53100Univ Siena, I-53100 Siena, Italy Tufts Univ, Boston, MA 02111 USA Tufts Univ Boston MA USA 02111Tufts Univ, Boston, MA 02111 USA Univ Padua, Padua, Italy Univ Padua Padua ItalyUniv Padua, Padua, Italy Univ Amsterdam, ACTA, Amsterdam, Netherlands Univ Amsterdam Amsterdam Netherlands rdam, ACTA, Amsterdam, Netherlands
Titolo Testata:
AMERICAN JOURNAL OF DENTISTRY
fascicolo: 6, volume: 13, anno: 2000,
pagine: 329 - 336
SICI:
0894-8275(200012)13:6<329:ROHOML>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Soggetto:
RESIN-DENTIN INTERDIFFUSION; IN-VIVO; ADHESIVE SYSTEMS; COMPOSITE RESIN; ETCHED DENTIN; HYBRID LAYER; ULTRASTRUCTURE; VITRO; MICROLEAKAGE; MORPHOLOGY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
41
Recensione:
Indirizzi per estratti:
Indirizzo: Ferrari, M Dent Res Ctr, Piazza Attias 19, I-57120 Livorno, Italy Dent ResCtr Piazza Attias 19 Livorno Italy I-57120 rno, Italy
Citazione:
M. Ferrari et al., "Role of hybridization on marginal leakage and bond strength", AM J DENT, 13(6), 2000, pp. 329-336

Abstract

Purpose: To evaluate whether the hybrid layer significantly contributes tothe seal of adhesive Class V restorations placed in vivo and to the bond strength obtained in vitro. Materials and Methods: 20 periodontally severelycompromised anterior teeth were selected for the leakage study. In each tooth, one round 3 mm wide V-shaped cavity with a maximum depth of 2 mm was prepared on the labial surface crossing the cementum-enamel junction. The sample teeth were randomly divided into two groups of ten samples each: in Group 1, Scotchbond Multi-Purpose Plus was applied in combination with Z-100 following the manufacturer's instructions. In Group 2 the bonding procedurewas the same as in Group 1, except that after the phosphoric acid treatment, the cavities were treated with 5% NaOCl for 2 min. Following a period ofclinical service of 60-90 days, the teeth were extracted and processed forthe leakage test. Results: At the enamel site, 30% of the samples of Group1 and 70% of the samples of Group 2 showed dye penetration. At the dentin site, 50% of the samples of Group 1 showed leakage, while all the samples of Group 2 were severely infiltrated. Statistically significant differences between the groups both for the enamel sites (P < 0.05) and for dentin-cementum sites (P < 0.001) were found. Bond strength tests, were performed on 2mm thick dentin slides of tapered Class I cavities (n = 10 in each group). The mean bond strength value obtained from cavities treated without NaOCl was 15.23 (+/-1.40) MPa and with NaOCl treatment 20.52 (+/-1.70) MPa. Statistical analysis showed significant differences (P < 0.05) between the two groups. No hybrid layer was detected on the NaOCl-treated samples by scanning electron microscopy.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 21/09/18 alle ore 08:48:27