TY  - JOUR
AU  - Papacchini, Federica
AU  - Radović, Ivana
AU  - Magni, Elisa
AU  - Goracci, Cecilia
AU  - Monticelli, Francesca
AU  - Chieffi, Nicoletta
AU  - Polimeni, Antonella
AU  - Ferrari, Marco
PY  - 2008
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1396
AB  - Purpose: To evaluate the effect of different intermediate resin agents on composite-to-composite microtensile bond strength (mu TBS). Methods: Composite disks (8 x 4 mm) of Gradia Direct Anterior (N= 15) and Filtek Supreme XT (N=15), stored in a saline solution at 37 degrees C for I month, were sandblasted (Microetcher, 50 mu m-Al2O3), cleaned (35% H3PO4), and randomly divided into five groups (N=3) according to the intermediate agent applied. Two flowable composites (Gradia LoFlo; Filtek Supreme XT Flow) and two adhesives (Adper Scotchbond 1XT, Scotchbond Multi-Purpose) were used. As a control, no intermediate agent was applied., Each disk was incrementally repaired (W mm) with the same resin as the respective substrate. By serially cutting each repaired specimen, multiple sticks of about 0.8 mm(2) in cross-section were obtained and loaded in tension until failure at a cross-head speed of 0.5 mm/minute. Data were statistically analyzed. Failure mode was examined by stereo- and scanning electron-microscopy (SEM). Additional specimens were prepared to morphologically evaluate the composite-to-composite interfacial quality by SEM analysis. Results: Composite substrate and intermediate agent were significant factors (Two-way ANOVA, P lt  0.001). Bond strengths achieved with Gradia Direct Anterior were higher than Hick Supreme XT. The application of flowable composites resulted in statistically superior mu TBS than adhesives and control (Tukey test, P lt  0.001). Failure mode was predominantly cohesive (flowable composites), cohesive/adhesive (adhesives) and adhesive (no treatment). Flowable composites and adhesives showed a good interfacial quality.
PB  - Mosher and Linder, Inc
T2  - American Journal of Dentistry
T1  - Flowable composites as intermediate agents without adhesive application in resin composite repair
VL  - 21
IS  - 1
SP  - 53
EP  - 58
UR  - https://hdl.handle.net/21.15107/rcub_smile_1396
ER  - 

@article{
author = "Papacchini, Federica and Radović, Ivana and Magni, Elisa and Goracci, Cecilia and Monticelli, Francesca and Chieffi, Nicoletta and Polimeni, Antonella and Ferrari, Marco",
year = "2008",
abstract = "Purpose: To evaluate the effect of different intermediate resin agents on composite-to-composite microtensile bond strength (mu TBS). Methods: Composite disks (8 x 4 mm) of Gradia Direct Anterior (N= 15) and Filtek Supreme XT (N=15), stored in a saline solution at 37 degrees C for I month, were sandblasted (Microetcher, 50 mu m-Al2O3), cleaned (35% H3PO4), and randomly divided into five groups (N=3) according to the intermediate agent applied. Two flowable composites (Gradia LoFlo; Filtek Supreme XT Flow) and two adhesives (Adper Scotchbond 1XT, Scotchbond Multi-Purpose) were used. As a control, no intermediate agent was applied., Each disk was incrementally repaired (W mm) with the same resin as the respective substrate. By serially cutting each repaired specimen, multiple sticks of about 0.8 mm(2) in cross-section were obtained and loaded in tension until failure at a cross-head speed of 0.5 mm/minute. Data were statistically analyzed. Failure mode was examined by stereo- and scanning electron-microscopy (SEM). Additional specimens were prepared to morphologically evaluate the composite-to-composite interfacial quality by SEM analysis. Results: Composite substrate and intermediate agent were significant factors (Two-way ANOVA, P lt  0.001). Bond strengths achieved with Gradia Direct Anterior were higher than Hick Supreme XT. The application of flowable composites resulted in statistically superior mu TBS than adhesives and control (Tukey test, P lt  0.001). Failure mode was predominantly cohesive (flowable composites), cohesive/adhesive (adhesives) and adhesive (no treatment). Flowable composites and adhesives showed a good interfacial quality.",
publisher = "Mosher and Linder, Inc",
journal = "American Journal of Dentistry",
title = "Flowable composites as intermediate agents without adhesive application in resin composite repair",
volume = "21",
number = "1",
pages = "53-58",
url = "https://hdl.handle.net/21.15107/rcub_smile_1396"
}

Papacchini, F., Radović, I., Magni, E., Goracci, C., Monticelli, F., Chieffi, N., Polimeni, A.,& Ferrari, M.. (2008). Flowable composites as intermediate agents without adhesive application in resin composite repair. in American Journal of Dentistry
Mosher and Linder, Inc., 21(1), 53-58.
https://hdl.handle.net/21.15107/rcub_smile_1396

Papacchini F, Radović I, Magni E, Goracci C, Monticelli F, Chieffi N, Polimeni A, Ferrari M. Flowable composites as intermediate agents without adhesive application in resin composite repair. in American Journal of Dentistry. 2008;21(1):53-58.
https://hdl.handle.net/21.15107/rcub_smile_1396 .

Papacchini, Federica, Radović, Ivana, Magni, Elisa, Goracci, Cecilia, Monticelli, Francesca, Chieffi, Nicoletta, Polimeni, Antonella, Ferrari, Marco, "Flowable composites as intermediate agents without adhesive application in resin composite repair" in American Journal of Dentistry, 21, no. 1 (2008):53-58,
https://hdl.handle.net/21.15107/rcub_smile_1396 .

TY  - JOUR
AU  - Papacchini, Federica
AU  - Monticelli, Francesca
AU  - Hasa, Irida
AU  - Radović, Ivana
AU  - Fabianelli, Andrea
AU  - Polimeni, Antonella
AU  - Ferrari, Marco
PY  - 2007
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1362
AB  - Purpose: To evaluate the effect of different silane agents and air-drying temperatures on the repair strength of a microfilled hybrid composite. Materials and Methods: Composite cylinders (8 x 4 mm) of Gradia Direct Anterior (GC, N = 36), stored in a saline solution at 37 degrees C for 1 month, were sandblasted (50-mu m aluminium oxide), cleaned (35% phosphoric acid) and randomly divided into six groups (n = 6). Two prehydrolyzed silane primers (Monobond-S, lvoclar-Vivadent, Porcelain Primer, Bisco), a non prehydrolyzed silane primer (Porcelain Liner M, Sun Medical) and three silane/adhesive coupling agents (Porcelain Bond Activator-PBA/Clearfil New Bond, PBA/Clearfil SE Bond, PBA/Clearfil Tri-S Bond, Kuraray) were investigated. Siiane-coated surfaces were air dried at two different temperatures (23 degrees C and 38 degrees C) and repairs (8 x 8 mm) were fabricated (Gradia Direct Anterior). Unrepaired composite cylinders (8 x 8 mm, n = 6) were used as control to evaluate the cohesive strength of the material. Microtensile bond strength measurements (mu TBS) were performed. Results: The silane agent applied (p  lt  0.001), the airdrying temperature (p  lt  0.001) and their interaction (p  lt  0.001) were significant factors (two-way ANOVA, Tukey test; p  lt  0.05). Silane primers achieved inferior mu TBS when air dried at 23 degrees C as compared to silane/adhesive blends. Warm air-drying was significantly beneficial to composite repairs mediated by silane primers. Comparable results were achieved by silane/adhesive couplings at 23 degrees C and 38 degrees C. At 38 degrees C all the intermediate agents resulted in repair mu TBS that were comparable to the 24-h cohesive strength of the composite (one-way ANOVA, Dunnett t-tests; p  lt  0.05). Conclusion: The chemical interactions between silane primers and compozite substrate may be optimized through warm airdrying. Silane/adhesive couplings were not influenced by the air drying temperature.
T2  - Journal of Adhesive Dentistry
T1  - Effect of air-drying temperature on the effectiveness of silane primers and coupling blends in the repair of a microhybrid resin composite
VL  - 9
IS  - 4
SP  - 391
EP  - 397
UR  - https://hdl.handle.net/21.15107/rcub_smile_1362
ER  - 

@article{
author = "Papacchini, Federica and Monticelli, Francesca and Hasa, Irida and Radović, Ivana and Fabianelli, Andrea and Polimeni, Antonella and Ferrari, Marco",
year = "2007",
abstract = "Purpose: To evaluate the effect of different silane agents and air-drying temperatures on the repair strength of a microfilled hybrid composite. Materials and Methods: Composite cylinders (8 x 4 mm) of Gradia Direct Anterior (GC, N = 36), stored in a saline solution at 37 degrees C for 1 month, were sandblasted (50-mu m aluminium oxide), cleaned (35% phosphoric acid) and randomly divided into six groups (n = 6). Two prehydrolyzed silane primers (Monobond-S, lvoclar-Vivadent, Porcelain Primer, Bisco), a non prehydrolyzed silane primer (Porcelain Liner M, Sun Medical) and three silane/adhesive coupling agents (Porcelain Bond Activator-PBA/Clearfil New Bond, PBA/Clearfil SE Bond, PBA/Clearfil Tri-S Bond, Kuraray) were investigated. Siiane-coated surfaces were air dried at two different temperatures (23 degrees C and 38 degrees C) and repairs (8 x 8 mm) were fabricated (Gradia Direct Anterior). Unrepaired composite cylinders (8 x 8 mm, n = 6) were used as control to evaluate the cohesive strength of the material. Microtensile bond strength measurements (mu TBS) were performed. Results: The silane agent applied (p  lt  0.001), the airdrying temperature (p  lt  0.001) and their interaction (p  lt  0.001) were significant factors (two-way ANOVA, Tukey test; p  lt  0.05). Silane primers achieved inferior mu TBS when air dried at 23 degrees C as compared to silane/adhesive blends. Warm air-drying was significantly beneficial to composite repairs mediated by silane primers. Comparable results were achieved by silane/adhesive couplings at 23 degrees C and 38 degrees C. At 38 degrees C all the intermediate agents resulted in repair mu TBS that were comparable to the 24-h cohesive strength of the composite (one-way ANOVA, Dunnett t-tests; p  lt  0.05). Conclusion: The chemical interactions between silane primers and compozite substrate may be optimized through warm airdrying. Silane/adhesive couplings were not influenced by the air drying temperature.",
journal = "Journal of Adhesive Dentistry",
title = "Effect of air-drying temperature on the effectiveness of silane primers and coupling blends in the repair of a microhybrid resin composite",
volume = "9",
number = "4",
pages = "391-397",
url = "https://hdl.handle.net/21.15107/rcub_smile_1362"
}

Papacchini, F., Monticelli, F., Hasa, I., Radović, I., Fabianelli, A., Polimeni, A.,& Ferrari, M.. (2007). Effect of air-drying temperature on the effectiveness of silane primers and coupling blends in the repair of a microhybrid resin composite. in Journal of Adhesive Dentistry, 9(4), 391-397.
https://hdl.handle.net/21.15107/rcub_smile_1362

Papacchini F, Monticelli F, Hasa I, Radović I, Fabianelli A, Polimeni A, Ferrari M. Effect of air-drying temperature on the effectiveness of silane primers and coupling blends in the repair of a microhybrid resin composite. in Journal of Adhesive Dentistry. 2007;9(4):391-397.
https://hdl.handle.net/21.15107/rcub_smile_1362 .

Papacchini, Federica, Monticelli, Francesca, Hasa, Irida, Radović, Ivana, Fabianelli, Andrea, Polimeni, Antonella, Ferrari, Marco, "Effect of air-drying temperature on the effectiveness of silane primers and coupling blends in the repair of a microhybrid resin composite" in Journal of Adhesive Dentistry, 9, no. 4 (2007):391-397,
https://hdl.handle.net/21.15107/rcub_smile_1362 .

TY  - JOUR
AU  - Magni, Elisa
AU  - Mazzitelli, Claudia
AU  - Papacchini, Federica
AU  - Radović, Ivana
AU  - Goracci, Cecilia
AU  - Coniglio, Ivanovic
AU  - Ferrari, Marco
PY  - 2007
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1359
AB  - Purpose: (1) To evaluate the interfacial strength between FRC Postec posts and three luting agents (Multilink, Variolink 11, and MultiCore Flow) following different surface treatments, and (2) to observe the effect of sandblasting (Rocatec Pre) on the surface morphology of methacrylate-based fiber posts. Materials and Methods: The posts received one of the following surface treatments: (1) sandblasting, (2) sandblasting + silanization, (3) silanization or (4) no treatment. The three luting agents were bonded to the post and the post-cement bond strength was evaluated with the microtensile test. SEM observation of sandblasted and nontreated posts was performed. Post-cement interfaces were also evaluated. Data were statistically analyzed with two-Way ANOVA with post treatment and luting agent as factors. Tukey's test was applied for post-hoc comparisons. Results: Post treatment and the interaction between type of luting agent and type of post treatment were significant factors for bond strength (p  lt  0.001). The type of luting agent did not significantly influence bond strength (p = 0.07). Sandblasting + silanization performed better than sandblasting or no treatment (p  lt  0.001). Silanization resulted in significantly higher bond strengths than no treatment (p = 0.045). No differences were detected between sandblasting + silanization and silanization. SEM observation revealed an increased surface roughness and exposure of fibers in sandblasted posts. Conclusion: Silanization was confirmed to be a reliable method for improving the bond strength of resin luting agents to fiber posts. Bond strength of resin luting agents to fiber posts was not influenced by the type of luting agent. The sandblasting procedure modified the methacrylate-based post surface texture.
T2  - Journal of Adhesive Dentistry
T1  - Adhesion between fiber posts and resin luting agents: A microtensile bond strength test and an SEM investigation following different treatments of the post surface
VL  - 9
IS  - 2
SP  - 195
EP  - 202
UR  - https://hdl.handle.net/21.15107/rcub_smile_1359
ER  - 

@article{
author = "Magni, Elisa and Mazzitelli, Claudia and Papacchini, Federica and Radović, Ivana and Goracci, Cecilia and Coniglio, Ivanovic and Ferrari, Marco",
year = "2007",
abstract = "Purpose: (1) To evaluate the interfacial strength between FRC Postec posts and three luting agents (Multilink, Variolink 11, and MultiCore Flow) following different surface treatments, and (2) to observe the effect of sandblasting (Rocatec Pre) on the surface morphology of methacrylate-based fiber posts. Materials and Methods: The posts received one of the following surface treatments: (1) sandblasting, (2) sandblasting + silanization, (3) silanization or (4) no treatment. The three luting agents were bonded to the post and the post-cement bond strength was evaluated with the microtensile test. SEM observation of sandblasted and nontreated posts was performed. Post-cement interfaces were also evaluated. Data were statistically analyzed with two-Way ANOVA with post treatment and luting agent as factors. Tukey's test was applied for post-hoc comparisons. Results: Post treatment and the interaction between type of luting agent and type of post treatment were significant factors for bond strength (p  lt  0.001). The type of luting agent did not significantly influence bond strength (p = 0.07). Sandblasting + silanization performed better than sandblasting or no treatment (p  lt  0.001). Silanization resulted in significantly higher bond strengths than no treatment (p = 0.045). No differences were detected between sandblasting + silanization and silanization. SEM observation revealed an increased surface roughness and exposure of fibers in sandblasted posts. Conclusion: Silanization was confirmed to be a reliable method for improving the bond strength of resin luting agents to fiber posts. Bond strength of resin luting agents to fiber posts was not influenced by the type of luting agent. The sandblasting procedure modified the methacrylate-based post surface texture.",
journal = "Journal of Adhesive Dentistry",
title = "Adhesion between fiber posts and resin luting agents: A microtensile bond strength test and an SEM investigation following different treatments of the post surface",
volume = "9",
number = "2",
pages = "195-202",
url = "https://hdl.handle.net/21.15107/rcub_smile_1359"
}

Magni, E., Mazzitelli, C., Papacchini, F., Radović, I., Goracci, C., Coniglio, I.,& Ferrari, M.. (2007). Adhesion between fiber posts and resin luting agents: A microtensile bond strength test and an SEM investigation following different treatments of the post surface. in Journal of Adhesive Dentistry, 9(2), 195-202.
https://hdl.handle.net/21.15107/rcub_smile_1359

Magni E, Mazzitelli C, Papacchini F, Radović I, Goracci C, Coniglio I, Ferrari M. Adhesion between fiber posts and resin luting agents: A microtensile bond strength test and an SEM investigation following different treatments of the post surface. in Journal of Adhesive Dentistry. 2007;9(2):195-202.
https://hdl.handle.net/21.15107/rcub_smile_1359 .

Magni, Elisa, Mazzitelli, Claudia, Papacchini, Federica, Radović, Ivana, Goracci, Cecilia, Coniglio, Ivanovic, Ferrari, Marco, "Adhesion between fiber posts and resin luting agents: A microtensile bond strength test and an SEM investigation following different treatments of the post surface" in Journal of Adhesive Dentistry, 9, no. 2 (2007):195-202,
https://hdl.handle.net/21.15107/rcub_smile_1359 .

TY  - JOUR
AU  - Radović, Ivana
AU  - Monticelli, Francesca
AU  - Papacchini, Federica
AU  - Magni, Elisa
AU  - Cury, Alvaro Hafiz
AU  - Vulićević, Zoran
AU  - Ferrari, Marco
PY  - 2007
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1335
AB  - Objectives: Although fiber posts luted in root canals are not directly exposed to oral fluids, water storage is considered as in vitro accelerated aging test for bonded interfaces. The aim of the study was to evaluate the influence of accelerated water aging on fiber post-resin composite adhesion. Methods: Forty fiber posts (DT Light Post, RTD) were randomly divided into two main groups, according to the surface treatment performed. Group 1: XPBond adhesive (Dentsply Caulk); Group II: sandblasting (Rocatec-Pre, 3M ESPE) and XPBond. Dual-cured resin cement (Calibra, Dentsply Caulk) and flowable composite (X-Flow, Dentsply Caulk) were applied on the posts to produce cylindrical specimens. The bond strength at the interface between post and cement/composite was measured with the microtensile test according to the non-trimming technique. Half of the sticks were tested immediately for bond strength, while in the other half testing was performed after 1 month of water storage at 37 degrees C. Post-cement/composite interfaces were evaluated under SEM prior and after water aging. Statistical analysis was performed using the Kruskal-Wallis ANOVA followed by Dunn's multiple range test (P  lt  0.05). Results: Immediate bond strength was higher on sandblasted posts. After water aging the two post surface treatments resulted comparable in bond strength. Resin cement achieved higher bond strength to fiber posts than flowable composite. Water aging significantly reduced bond strength. Conclusions: Sandblasting followed by adhesive coating may improve immediate post-resin bond strength in comparison to adhesive alone. However, fiber post-resin bond strength mediated by hydrophilic adhesive tends to decrease after water aging.
PB  - Elsevier Sci Ltd, Oxford
T2  - Journal of Dentistry
T1  - Accelerated aging of adhesive-mediated fiber post-resin composite bonds: A modeling approach
VL  - 35
IS  - 8
SP  - 683
EP  - 689
DO  - 10.1016/j.jdent.2007.05.006
ER  - 

@article{
author = "Radović, Ivana and Monticelli, Francesca and Papacchini, Federica and Magni, Elisa and Cury, Alvaro Hafiz and Vulićević, Zoran and Ferrari, Marco",
year = "2007",
abstract = "Objectives: Although fiber posts luted in root canals are not directly exposed to oral fluids, water storage is considered as in vitro accelerated aging test for bonded interfaces. The aim of the study was to evaluate the influence of accelerated water aging on fiber post-resin composite adhesion. Methods: Forty fiber posts (DT Light Post, RTD) were randomly divided into two main groups, according to the surface treatment performed. Group 1: XPBond adhesive (Dentsply Caulk); Group II: sandblasting (Rocatec-Pre, 3M ESPE) and XPBond. Dual-cured resin cement (Calibra, Dentsply Caulk) and flowable composite (X-Flow, Dentsply Caulk) were applied on the posts to produce cylindrical specimens. The bond strength at the interface between post and cement/composite was measured with the microtensile test according to the non-trimming technique. Half of the sticks were tested immediately for bond strength, while in the other half testing was performed after 1 month of water storage at 37 degrees C. Post-cement/composite interfaces were evaluated under SEM prior and after water aging. Statistical analysis was performed using the Kruskal-Wallis ANOVA followed by Dunn's multiple range test (P  lt  0.05). Results: Immediate bond strength was higher on sandblasted posts. After water aging the two post surface treatments resulted comparable in bond strength. Resin cement achieved higher bond strength to fiber posts than flowable composite. Water aging significantly reduced bond strength. Conclusions: Sandblasting followed by adhesive coating may improve immediate post-resin bond strength in comparison to adhesive alone. However, fiber post-resin bond strength mediated by hydrophilic adhesive tends to decrease after water aging.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Journal of Dentistry",
title = "Accelerated aging of adhesive-mediated fiber post-resin composite bonds: A modeling approach",
volume = "35",
number = "8",
pages = "683-689",
doi = "10.1016/j.jdent.2007.05.006"
}

Radović, I., Monticelli, F., Papacchini, F., Magni, E., Cury, A. H., Vulićević, Z.,& Ferrari, M.. (2007). Accelerated aging of adhesive-mediated fiber post-resin composite bonds: A modeling approach. in Journal of Dentistry
Elsevier Sci Ltd, Oxford., 35(8), 683-689.
https://doi.org/10.1016/j.jdent.2007.05.006

Radović I, Monticelli F, Papacchini F, Magni E, Cury AH, Vulićević Z, Ferrari M. Accelerated aging of adhesive-mediated fiber post-resin composite bonds: A modeling approach. in Journal of Dentistry. 2007;35(8):683-689.
doi:10.1016/j.jdent.2007.05.006 .

Radović, Ivana, Monticelli, Francesca, Papacchini, Federica, Magni, Elisa, Cury, Alvaro Hafiz, Vulićević, Zoran, Ferrari, Marco, "Accelerated aging of adhesive-mediated fiber post-resin composite bonds: A modeling approach" in Journal of Dentistry, 35, no. 8 (2007):683-689,
https://doi.org/10.1016/j.jdent.2007.05.006 . .

TY  - JOUR
AU  - Papacchini, Federica
AU  - Toledano, Manuel
AU  - Monticelli, Francesca
AU  - Osorio, Raquel
AU  - Radović, Ivana
AU  - Polimeni, Antonella
AU  - Garcia-Godoy, Franklin
AU  - Ferrari, Marco
PY  - 2007
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1328
AB  - The hydrolytic stability of composite repairs is a desirable property. In the present study, the composite repair microtensile bond strength, failure mode distribution, and nanoleakage occurrence before and after thermocycling were evaluated. Standardized, 1-month-old composite substrates were roughened, cleaned, and randomly assigned to seven groups according to the intermediate agent applied. Resin-based, silane-based, and combined silane/adhesive coupling agents were investigated. The same resin composite as the substrate was used for repair. For each group, repaired samples were wet stored for 24 h (37 degrees C) or thermocycled (5,000 cycles, 5-55 degrees C). Failure mode and silver nitrate penetration were examined by stereomicroscopy. Intermediate agent, experimental condition, and their interaction were significant factors. Hydrophobic flowable composites resulted in statistically higher repair strengths, lower occurrence of adhesive failures, and good quality interfacial coupling without any silver uptake in both conditions. Light-curing, hydrophilic resin monomer-based intermediate agents, although not affected by thermocycling, showed a more pronounced silver penetration. The composite repair strength of a self-curing silane/adhesive agent was significantly affected by thermal stresses, despite the absence of silver uptake. A prehydrolized silane agent recorded the lowest repair strength, with minimal or no evidence of interfacial silver impregnation after thermocycling. In conclusion, flowability and hydrophobic nature can be considered important properties when selecting intermediate agents for composite repair.
PB  - Wiley, Hoboken
T2  - European Journal of Oral Sciences
T1  - Hydrolytic stability of composite repair bond
VL  - 115
IS  - 5
SP  - 417
EP  - 424
DO  - 10.1111/j.1600-0722.2007.00475.x
ER  - 

@article{
author = "Papacchini, Federica and Toledano, Manuel and Monticelli, Francesca and Osorio, Raquel and Radović, Ivana and Polimeni, Antonella and Garcia-Godoy, Franklin and Ferrari, Marco",
year = "2007",
abstract = "The hydrolytic stability of composite repairs is a desirable property. In the present study, the composite repair microtensile bond strength, failure mode distribution, and nanoleakage occurrence before and after thermocycling were evaluated. Standardized, 1-month-old composite substrates were roughened, cleaned, and randomly assigned to seven groups according to the intermediate agent applied. Resin-based, silane-based, and combined silane/adhesive coupling agents were investigated. The same resin composite as the substrate was used for repair. For each group, repaired samples were wet stored for 24 h (37 degrees C) or thermocycled (5,000 cycles, 5-55 degrees C). Failure mode and silver nitrate penetration were examined by stereomicroscopy. Intermediate agent, experimental condition, and their interaction were significant factors. Hydrophobic flowable composites resulted in statistically higher repair strengths, lower occurrence of adhesive failures, and good quality interfacial coupling without any silver uptake in both conditions. Light-curing, hydrophilic resin monomer-based intermediate agents, although not affected by thermocycling, showed a more pronounced silver penetration. The composite repair strength of a self-curing silane/adhesive agent was significantly affected by thermal stresses, despite the absence of silver uptake. A prehydrolized silane agent recorded the lowest repair strength, with minimal or no evidence of interfacial silver impregnation after thermocycling. In conclusion, flowability and hydrophobic nature can be considered important properties when selecting intermediate agents for composite repair.",
publisher = "Wiley, Hoboken",
journal = "European Journal of Oral Sciences",
title = "Hydrolytic stability of composite repair bond",
volume = "115",
number = "5",
pages = "417-424",
doi = "10.1111/j.1600-0722.2007.00475.x"
}

Papacchini, F., Toledano, M., Monticelli, F., Osorio, R., Radović, I., Polimeni, A., Garcia-Godoy, F.,& Ferrari, M.. (2007). Hydrolytic stability of composite repair bond. in European Journal of Oral Sciences
Wiley, Hoboken., 115(5), 417-424.
https://doi.org/10.1111/j.1600-0722.2007.00475.x

Papacchini F, Toledano M, Monticelli F, Osorio R, Radović I, Polimeni A, Garcia-Godoy F, Ferrari M. Hydrolytic stability of composite repair bond. in European Journal of Oral Sciences. 2007;115(5):417-424.
doi:10.1111/j.1600-0722.2007.00475.x .

Papacchini, Federica, Toledano, Manuel, Monticelli, Francesca, Osorio, Raquel, Radović, Ivana, Polimeni, Antonella, Garcia-Godoy, Franklin, Ferrari, Marco, "Hydrolytic stability of composite repair bond" in European Journal of Oral Sciences, 115, no. 5 (2007):417-424,
https://doi.org/10.1111/j.1600-0722.2007.00475.x . .

TY  - JOUR
AU  - Papacchini, Federica
AU  - Monticelli, Francesca
AU  - Radović, Ivana
AU  - Chieffi, Nicoletta
AU  - Goracci, Cecilia
AU  - Tay, Franklin
AU  - Polimeni, Antonella
AU  - Ferrari, Marco
PY  - 2007
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1326
AB  - This study examined the influence of different surface conditioning methods on composite-to-composite microtensile bond strength. Thirty two-year old composite resin discs were randomly divided into three groups according to the different mechanical/chemical surface pretreatment tested: (1) 38% hydrogen peroxide (H2O2) -treatment; (2) 50-mu m aluminum oxide sandblasting; (3) no treatment. Depending on the intermediate agent applied, two subgroups were created: (A) three-step adhesive system; (B) prehydrolyzed silane coupling agent + three-step adhesive system. Microtensile bond strength measurements were performed and the data were statistically analyzed with Kruskall-Wallis Analysis of Variance and Dunn's multiple range test for post hoc comparisons (p  lt  0.05). Failure mode was evaluated with a scanning electron microscope. Changes in composite surface topography after H2O2 treatment were also investigated. Composite repair strength did not benefit from H2O2 treatment and adhesive application. Preliminary sandblasting significantly improved interfacial bond strength regardless of the intermediate agent applied. No changes in surface texture were produced after H2O2 treatment. An atypical fracture pattern was detected at the interfacial level between H2O2-treated composite surfaces and the overlying adhesive and composite. H2O2 treatment affected the composite-to-composite repair strength: a compromised resin polymerization may occur, resulting in a poor interfacial quality and a weak bond. Sandblasting still remains a reliable technique for composite repair.
PB  - Wiley, Hoboken
T2  - Journal of Biomedical Materials Research Part B: Applied Biomaterials
T1  - The application of hydrogen peroxide in composite repair
VL  - 82B
IS  - 2
SP  - 298
EP  - 304
DO  - 10.1002/jbm.b.30733
ER  - 

@article{
author = "Papacchini, Federica and Monticelli, Francesca and Radović, Ivana and Chieffi, Nicoletta and Goracci, Cecilia and Tay, Franklin and Polimeni, Antonella and Ferrari, Marco",
year = "2007",
abstract = "This study examined the influence of different surface conditioning methods on composite-to-composite microtensile bond strength. Thirty two-year old composite resin discs were randomly divided into three groups according to the different mechanical/chemical surface pretreatment tested: (1) 38% hydrogen peroxide (H2O2) -treatment; (2) 50-mu m aluminum oxide sandblasting; (3) no treatment. Depending on the intermediate agent applied, two subgroups were created: (A) three-step adhesive system; (B) prehydrolyzed silane coupling agent + three-step adhesive system. Microtensile bond strength measurements were performed and the data were statistically analyzed with Kruskall-Wallis Analysis of Variance and Dunn's multiple range test for post hoc comparisons (p  lt  0.05). Failure mode was evaluated with a scanning electron microscope. Changes in composite surface topography after H2O2 treatment were also investigated. Composite repair strength did not benefit from H2O2 treatment and adhesive application. Preliminary sandblasting significantly improved interfacial bond strength regardless of the intermediate agent applied. No changes in surface texture were produced after H2O2 treatment. An atypical fracture pattern was detected at the interfacial level between H2O2-treated composite surfaces and the overlying adhesive and composite. H2O2 treatment affected the composite-to-composite repair strength: a compromised resin polymerization may occur, resulting in a poor interfacial quality and a weak bond. Sandblasting still remains a reliable technique for composite repair.",
publisher = "Wiley, Hoboken",
journal = "Journal of Biomedical Materials Research Part B: Applied Biomaterials",
title = "The application of hydrogen peroxide in composite repair",
volume = "82B",
number = "2",
pages = "298-304",
doi = "10.1002/jbm.b.30733"
}

Papacchini, F., Monticelli, F., Radović, I., Chieffi, N., Goracci, C., Tay, F., Polimeni, A.,& Ferrari, M.. (2007). The application of hydrogen peroxide in composite repair. in Journal of Biomedical Materials Research Part B: Applied Biomaterials
Wiley, Hoboken., 82B(2), 298-304.
https://doi.org/10.1002/jbm.b.30733

Papacchini F, Monticelli F, Radović I, Chieffi N, Goracci C, Tay F, Polimeni A, Ferrari M. The application of hydrogen peroxide in composite repair. in Journal of Biomedical Materials Research Part B: Applied Biomaterials. 2007;82B(2):298-304.
doi:10.1002/jbm.b.30733 .

Papacchini, Federica, Monticelli, Francesca, Radović, Ivana, Chieffi, Nicoletta, Goracci, Cecilia, Tay, Franklin, Polimeni, Antonella, Ferrari, Marco, "The application of hydrogen peroxide in composite repair" in Journal of Biomedical Materials Research Part B: Applied Biomaterials, 82B, no. 2 (2007):298-304,
https://doi.org/10.1002/jbm.b.30733 . .

TY  - JOUR
AU  - Papacchini, Federica
AU  - Magni, Elisa
AU  - Radović, I.
AU  - Mazzitelli, Claudia
AU  - Monticelli, Francesca
AU  - Goracci, Cecilia
AU  - Polimeni, Antonella
AU  - Ferrari, Marco
PY  - 2007
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1325
AB  - This study investigated the composite-to-composite microtensile bond strength and interfacial quality after using different combinations of intermediate agents and pre-curing temperatures of repairing resin. Forty-five composite discs (8x4mm) of Gradia Direct Anterior (GC Corp), stored in a saline solution at 37 degrees C for one month, were sandblasted (50 pm aluminum oxide), cleaned (35% phosphoric acid) and randomly divided into three groups (n=15) according to the intermediate agent applied: 1) no treatment; 2) unfilled resin (Scotchbond Multi-Purpose Adhesive, 3M ESPE); 3) flowable composite (Gradia LoFlo, GC Corp). Each disc was incrementally repaired (8x8 mm) with the same resin as the substrate. For each group, three subgroups (n=5) were created, depending on the pre-curing temperature of the repairing resin-4 degrees C, 23 degrees C or 37 degrees C. Two bonded specimens per group were prepared to evaluate the composite-to-composite interfacial quality via scanning electron microscope. Microtensile bond strength measurements were performed with the remaining three specimens and failure mode was examined by stereomicroscopy. Two-way ANOVA revealed that temperature (p  lt  0.001), intermediate agent (p  lt  0.001) and the interaction (p=0.002) significantly affected the repair strength. Post-hoc comparisons revealed that bond strengths were significantly lower using a 4 degrees C repairing resin in groups where intermediate agents were used. The highest bond strengths were recorded when flowable composite was used as an intermediate agent under each of the three temperature conditions. Interfacial quality improved by raising the resin temperature from 4 degrees C to 37 degrees C.
PB  - Operative Dentistry Inc, Indianapolis
T2  - Operative Dentistry
T1  - Effect of intermediate agents and pre-heating of repairing resin on composite-repair bonds
VL  - 32
IS  - 4
SP  - 363
EP  - 371
DO  - 10.2341/06-105
ER  - 

@article{
author = "Papacchini, Federica and Magni, Elisa and Radović, I. and Mazzitelli, Claudia and Monticelli, Francesca and Goracci, Cecilia and Polimeni, Antonella and Ferrari, Marco",
year = "2007",
abstract = "This study investigated the composite-to-composite microtensile bond strength and interfacial quality after using different combinations of intermediate agents and pre-curing temperatures of repairing resin. Forty-five composite discs (8x4mm) of Gradia Direct Anterior (GC Corp), stored in a saline solution at 37 degrees C for one month, were sandblasted (50 pm aluminum oxide), cleaned (35% phosphoric acid) and randomly divided into three groups (n=15) according to the intermediate agent applied: 1) no treatment; 2) unfilled resin (Scotchbond Multi-Purpose Adhesive, 3M ESPE); 3) flowable composite (Gradia LoFlo, GC Corp). Each disc was incrementally repaired (8x8 mm) with the same resin as the substrate. For each group, three subgroups (n=5) were created, depending on the pre-curing temperature of the repairing resin-4 degrees C, 23 degrees C or 37 degrees C. Two bonded specimens per group were prepared to evaluate the composite-to-composite interfacial quality via scanning electron microscope. Microtensile bond strength measurements were performed with the remaining three specimens and failure mode was examined by stereomicroscopy. Two-way ANOVA revealed that temperature (p  lt  0.001), intermediate agent (p  lt  0.001) and the interaction (p=0.002) significantly affected the repair strength. Post-hoc comparisons revealed that bond strengths were significantly lower using a 4 degrees C repairing resin in groups where intermediate agents were used. The highest bond strengths were recorded when flowable composite was used as an intermediate agent under each of the three temperature conditions. Interfacial quality improved by raising the resin temperature from 4 degrees C to 37 degrees C.",
publisher = "Operative Dentistry Inc, Indianapolis",
journal = "Operative Dentistry",
title = "Effect of intermediate agents and pre-heating of repairing resin on composite-repair bonds",
volume = "32",
number = "4",
pages = "363-371",
doi = "10.2341/06-105"
}

Papacchini, F., Magni, E., Radović, I., Mazzitelli, C., Monticelli, F., Goracci, C., Polimeni, A.,& Ferrari, M.. (2007). Effect of intermediate agents and pre-heating of repairing resin on composite-repair bonds. in Operative Dentistry
Operative Dentistry Inc, Indianapolis., 32(4), 363-371.
https://doi.org/10.2341/06-105

Papacchini F, Magni E, Radović I, Mazzitelli C, Monticelli F, Goracci C, Polimeni A, Ferrari M. Effect of intermediate agents and pre-heating of repairing resin on composite-repair bonds. in Operative Dentistry. 2007;32(4):363-371.
doi:10.2341/06-105 .

Papacchini, Federica, Magni, Elisa, Radović, I., Mazzitelli, Claudia, Monticelli, Francesca, Goracci, Cecilia, Polimeni, Antonella, Ferrari, Marco, "Effect of intermediate agents and pre-heating of repairing resin on composite-repair bonds" in Operative Dentistry, 32, no. 4 (2007):363-371,
https://doi.org/10.2341/06-105 . .