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Titolo:
Orthodontic-restorative treatment of chipped or worn incisors
Autore:
Goracci, C; Gheewalla, R; Kugel, G; Ferrari, M;
Indirizzi:
Univ Siena, Sch Oral Hyg, I-53100 Siena, Italy Univ Siena Siena Italy I-53100 Siena, Sch Oral Hyg, I-53100 Siena, Italy Tufts Univ, Dept Orthodont, Boston, MA 02111 USA Tufts Univ Boston MA USA02111 Univ, Dept Orthodont, Boston, MA 02111 USA Tufts Univ, Dept Esthet Dent, Boston, MA 02111 USA Tufts Univ Boston MA USA 02111 iv, Dept Esthet Dent, Boston, MA 02111 USA Univ Siena, Dent Mat Dept, I-53100 Siena, Italy Univ Siena Siena Italy I-53100 iena, Dent Mat Dept, I-53100 Siena, Italy
Titolo Testata:
AMERICAN JOURNAL OF DENTISTRY
fascicolo: 1, volume: 14, anno: 2001,
pagine: 50 - 55
SICI:
0894-8275(200102)14:1<50:OTOCOW>2.0.ZU;2-R
Fonte:
ISI
Lingua:
ENG
Soggetto:
DENTIN-BONDING AGENTS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
16
Recensione:
Indirizzi per estratti:
Indirizzo: Ferrari, M Res Ctr Dent, Piazza Attias 19, I-57120 Livorno, Italy Res Ctr Dent Piazza Attias 19 Livorno Italy I-57120 rno, Italy
Citazione:
C. Goracci et al., "Orthodontic-restorative treatment of chipped or worn incisors", AM J DENT, 14(1), 2001, pp. 50-55

Abstract

Purpose: To evaluate the shear bond strength of esthetic adhesive restorations for worn or fractured incisal edges. Materials and Methods: On 30 human extracted incisors the edge was reduced and a bevel was prepared in the thickness of enamel. Then, the incisal edges were restored, using a different adhesive system in each of the three groups to which the sample teeth hadbeen randomly assigned. Group A: Scotchbond Multi-Purpose Plus, in combination with phosphoric acid, and Z100 as a restorative material. Group B: Scotchbond 1 after etching with phosphoric acid, Plus Z100. Group C: F2000, a compomer, in combination with its Primer/Adhesive. The differences in the bond strength values among the three groups were tested for statistical significance. Also, the resistance to load of the restored teeth was compared with that of 10 intact incisors (Group D) (controls). A statistical analysiswas performed to test the significance of the differences. Results: No statistically significant difference in shear bond strength was found between Scotchbond Multi-Purpose Plus (17.6 MPa) and Scotchbond 1 (14.8 MPa), whereas F2000 gave significantly lower bond strength values (10.1 MPa). As compared with intact incisors, the teeth restored with either Scotchbond Multi-Purpose Plus or Scotchbond 1 did not perform significantly differently underload. On the other hand, the incisors restored with F2000 gave, as compared with the controls, a resistance to loads significantly lower and of a questionable reliability from a clinical standpoint. SEM observations performed on some of the samples revealed that when phosphoric acid was used to condition the substrate, a deep and uniform demineralization of the enamel waseffected, and a mechanically retentive interlocking was created at the interface between resin and enamel. The Adhesive/Primer of F2000 was unable toproduce an equally retentive morphology.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 23/09/18 alle ore 08:53:11