Bond strength of restorative materials to hydroxyapatite inserts and dimensional changes of insert-containing restorations during polymerization
Samo za registrovane korisnike
2015
Autori
Ležaja, MajaVeljović, Đorđe

Manojlović, Dragica
Milošević, Miloš
Mitrović, Nenad

Janaćković, Đorđe
Miletić, Vesna

Članak u časopisu (Objavljena verzija)

Metapodaci
Prikaz svih podataka o dokumentuApstrakt
Objective. To determine the shear bond strength (SBS) between synthetic controlled porous hydroxyapatite (HAP) inserts and restorative materials and dimensional changes of insert-containing restorations during curing. Methods. Cylinder-shaped HAP inserts (4 mm in diameter, 1.6 mm thick) were cemented in dentin discs (5 mm x 1.6 mm), cut mid-coronally from human third molars, using one of the following materials: universal microhybrid composite Filtek Z250, flowable composite Filtek Ultimate or glass-ionomer Vitrebond (all 3M ESPE). SBS of the same materials to HAP inserts was tested in a universal testing machine. Three-dimensional digital image correlation system Aramis (GOM) was used to measure strains and displacements. Data were statistically analyzed using one-way ANOVA with Tukey's post-test (alpha = 0.05). Results. SBS of restorative materials to HAP inserts ranged between 12.2 +/- 2.1 MPa (Filtek Z250) and 0.7 +/- 0.4 MPa (Filtek Z250 without an adhesive). The 'total-etch' appr...oach of adhesive application significantly increased SBS of both Filtek Z250 (12.2 +/- 2.1 MPa) and Filtek Ultimate flowable (9.5 +/- 2.5 MPa) compared to the 'self-etch' approach (8.2 +/- 1.6 MPa and 4.4 +/- 0.9 MPa, respectively) (p lt 0.05). HAP inserts reduced polymerization shrinkage to below 0.5% as well as displacements in the central region of the restorations. Peripheral shrinkage of restorative materials was similar with and without HAP inserts as were displacements of Filtek Z250 and Vitrebond. Significance. Replacing major part of dentin clinically, especially in large cavities, HAP inserts may shorten clinical working time, improve dimensional stability of the restoration by reducing central shrinkage and displacements and provide adhesive bonding to universal composites following a 'total-etch' approach.
Ključne reči:
Hydroxyapatite / Inserts / Bond strength / Polymerization shrinkage / Dentin / Composite / Glass-ionomer / AdhesiveIzvor:
Dental Materials, 2015, 31, 2, 171-181Izdavač:
- Elsevier Sci Ltd, Oxford
Finansiranje / projekti:
- Razvoj i primena metoda i materijala za monitoring novih zagađujućih i toksičnih organskih materija i teških metala (RS-172007)
- Sinteza, razvoj tehnologija dobijanja i primena nanostrukturnih multifunkcionalnih materijala definisanih svojstava (RS-45019)
- Razvoj savremenih metoda dijagnostike i ispitivanja mašinskih struktura (RS-35040)
DOI: 10.1016/j.dental.2014.11.017
ISSN: 0109-5641
PubMed: 25541508
WoS: 000349759400017
Scopus: 2-s2.0-84920937564
Kolekcije
Institucija/grupa
Stomatološki fakultetTY - JOUR AU - Ležaja, Maja AU - Veljović, Đorđe AU - Manojlović, Dragica AU - Milošević, Miloš AU - Mitrović, Nenad AU - Janaćković, Đorđe AU - Miletić, Vesna PY - 2015 UR - https://smile.stomf.bg.ac.rs/handle/123456789/1962 AB - Objective. To determine the shear bond strength (SBS) between synthetic controlled porous hydroxyapatite (HAP) inserts and restorative materials and dimensional changes of insert-containing restorations during curing. Methods. Cylinder-shaped HAP inserts (4 mm in diameter, 1.6 mm thick) were cemented in dentin discs (5 mm x 1.6 mm), cut mid-coronally from human third molars, using one of the following materials: universal microhybrid composite Filtek Z250, flowable composite Filtek Ultimate or glass-ionomer Vitrebond (all 3M ESPE). SBS of the same materials to HAP inserts was tested in a universal testing machine. Three-dimensional digital image correlation system Aramis (GOM) was used to measure strains and displacements. Data were statistically analyzed using one-way ANOVA with Tukey's post-test (alpha = 0.05). Results. SBS of restorative materials to HAP inserts ranged between 12.2 +/- 2.1 MPa (Filtek Z250) and 0.7 +/- 0.4 MPa (Filtek Z250 without an adhesive). The 'total-etch' approach of adhesive application significantly increased SBS of both Filtek Z250 (12.2 +/- 2.1 MPa) and Filtek Ultimate flowable (9.5 +/- 2.5 MPa) compared to the 'self-etch' approach (8.2 +/- 1.6 MPa and 4.4 +/- 0.9 MPa, respectively) (p lt 0.05). HAP inserts reduced polymerization shrinkage to below 0.5% as well as displacements in the central region of the restorations. Peripheral shrinkage of restorative materials was similar with and without HAP inserts as were displacements of Filtek Z250 and Vitrebond. Significance. Replacing major part of dentin clinically, especially in large cavities, HAP inserts may shorten clinical working time, improve dimensional stability of the restoration by reducing central shrinkage and displacements and provide adhesive bonding to universal composites following a 'total-etch' approach. PB - Elsevier Sci Ltd, Oxford T2 - Dental Materials T1 - Bond strength of restorative materials to hydroxyapatite inserts and dimensional changes of insert-containing restorations during polymerization VL - 31 IS - 2 SP - 171 EP - 181 DO - 10.1016/j.dental.2014.11.017 ER -
@article{ author = "Ležaja, Maja and Veljović, Đorđe and Manojlović, Dragica and Milošević, Miloš and Mitrović, Nenad and Janaćković, Đorđe and Miletić, Vesna", year = "2015", abstract = "Objective. To determine the shear bond strength (SBS) between synthetic controlled porous hydroxyapatite (HAP) inserts and restorative materials and dimensional changes of insert-containing restorations during curing. Methods. Cylinder-shaped HAP inserts (4 mm in diameter, 1.6 mm thick) were cemented in dentin discs (5 mm x 1.6 mm), cut mid-coronally from human third molars, using one of the following materials: universal microhybrid composite Filtek Z250, flowable composite Filtek Ultimate or glass-ionomer Vitrebond (all 3M ESPE). SBS of the same materials to HAP inserts was tested in a universal testing machine. Three-dimensional digital image correlation system Aramis (GOM) was used to measure strains and displacements. Data were statistically analyzed using one-way ANOVA with Tukey's post-test (alpha = 0.05). Results. SBS of restorative materials to HAP inserts ranged between 12.2 +/- 2.1 MPa (Filtek Z250) and 0.7 +/- 0.4 MPa (Filtek Z250 without an adhesive). The 'total-etch' approach of adhesive application significantly increased SBS of both Filtek Z250 (12.2 +/- 2.1 MPa) and Filtek Ultimate flowable (9.5 +/- 2.5 MPa) compared to the 'self-etch' approach (8.2 +/- 1.6 MPa and 4.4 +/- 0.9 MPa, respectively) (p lt 0.05). HAP inserts reduced polymerization shrinkage to below 0.5% as well as displacements in the central region of the restorations. Peripheral shrinkage of restorative materials was similar with and without HAP inserts as were displacements of Filtek Z250 and Vitrebond. Significance. Replacing major part of dentin clinically, especially in large cavities, HAP inserts may shorten clinical working time, improve dimensional stability of the restoration by reducing central shrinkage and displacements and provide adhesive bonding to universal composites following a 'total-etch' approach.", publisher = "Elsevier Sci Ltd, Oxford", journal = "Dental Materials", title = "Bond strength of restorative materials to hydroxyapatite inserts and dimensional changes of insert-containing restorations during polymerization", volume = "31", number = "2", pages = "171-181", doi = "10.1016/j.dental.2014.11.017" }
Ležaja, M., Veljović, Đ., Manojlović, D., Milošević, M., Mitrović, N., Janaćković, Đ.,& Miletić, V.. (2015). Bond strength of restorative materials to hydroxyapatite inserts and dimensional changes of insert-containing restorations during polymerization. in Dental Materials Elsevier Sci Ltd, Oxford., 31(2), 171-181. https://doi.org/10.1016/j.dental.2014.11.017
Ležaja M, Veljović Đ, Manojlović D, Milošević M, Mitrović N, Janaćković Đ, Miletić V. Bond strength of restorative materials to hydroxyapatite inserts and dimensional changes of insert-containing restorations during polymerization. in Dental Materials. 2015;31(2):171-181. doi:10.1016/j.dental.2014.11.017 .
Ležaja, Maja, Veljović, Đorđe, Manojlović, Dragica, Milošević, Miloš, Mitrović, Nenad, Janaćković, Đorđe, Miletić, Vesna, "Bond strength of restorative materials to hydroxyapatite inserts and dimensional changes of insert-containing restorations during polymerization" in Dental Materials, 31, no. 2 (2015):171-181, https://doi.org/10.1016/j.dental.2014.11.017 . .