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Navarra CO, Reda B, Diolosà M, Casula I, Di Lenarda R, Breschi L, Cadenaro M. The effects of two 10% carbamide peroxide nightguard bleaching agents, with and without desensitizer, on enamel and sensitivity: anin vivostudy. Int J Dent Hyg 2013; 12:115-20. [DOI: 10.1111/idh.12054] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/29/2013] [Indexed: 11/29/2022]
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Diolosà M, Donati I, Paoletti S, Di Lenarda R, Breschi L, Cadenaro M. Bond stability of a chitosan-containing experimental adhesive. Dent Mater 2013. [DOI: 10.1016/j.dental.2013.08.189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Navarra C, Fontanive L, Mazzoni A, Di Lenarda R, Breschi L, Pashley D, Cadenaro M. Thermal degradation of EDC-cross-linked dentinal collagen. Dent Mater 2013. [DOI: 10.1016/j.dental.2013.08.165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Angeloni V, Mazzoni A, Frassetto A, Cadenaro M, Falconi M, Manzoli L, Pashley D, Breschi L. EDC stabilize the adhesive interface over time. Dent Mater 2013. [DOI: 10.1016/j.dental.2013.08.135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Turco G, Frassetto A, Mazzoni A, Cadenaro M, Pashley D, Breschi L. MMPs activity in dentin collagen: Static and dynamic investigation. Dent Mater 2013. [DOI: 10.1016/j.dental.2013.08.176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Frassetto A, Navarra CO, Marchesi G, Turco G, Di Lenarda R, Breschi L, Ferracane JL, Cadenaro M. Kinetics of polymerization and contraction stress development in self-adhesive resin cements. Dent Mater 2012; 28:1032-9. [PMID: 22770674 DOI: 10.1016/j.dental.2012.06.003] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2011] [Revised: 04/27/2012] [Accepted: 06/14/2012] [Indexed: 11/19/2022]
Abstract
OBJECTIVES The aim of the study was to evaluate the contraction stress, microhardness and polymerization kinetics of three self-adhesive cements vs. conventional dual-cure resin cement. METHODS Cements tested were: RelyX Unicem (3M ESPE, St. Paul, MN, USA), MaxCem Elite (Kerr, Orange, CA, USA), Clearfil SA Cement (Kuraray, Tokyo, Japan) and Duolink (Bisco Inc., Schaumburg, IL, USA). Cements were irradiated with a LED-curing unit (bluephase, IvoclarVivadent) for 20 or 40 s and the contraction forces (N) generated during polymerization were continuously recorded for 6 h with a universal testing machine. Polymerization kinetics were monitored using micro-Raman spectroscopy and degree of conversion was calculated. Vickers microhardness was also recorded. All measurements were performed at 10 min and 6h. Data were statistically analyzed by three-way ANOVA with repeated measures and Tukey's post hoc test (α=0.05). RESULTS Irrespective of exposure time, stress analysis ranked in the following order: Clearfil SA Cement<MaxCem<RelyX Unicem≤Duolink (p<0.05). Stress was correlated with microhardness values (p<0.05). Kinetic curves showed that maximum degree of conversion was attained more quickly than maximum stress after light activation. SIGNIFICANCE The conventional resin-based cement showed higher stress values than the self-adhesive cements. The results were material-dependent and probably correlated to the composition of each material.
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Turco G, Cadenaro M, Mazzoni A, Tay F, Pashley D, Breschi L. Elution of chlorhexidine and BisGMA from an experimental adhesive resin. Dent Mater 2012. [DOI: 10.1016/j.dental.2012.07.047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Marchesi G, Turco G, Cadenaro M, Di Lenarda R, Breschi L. Self-adhesive cements adhesion to zirconia using a new primer. Dent Mater 2012. [DOI: 10.1016/j.dental.2012.07.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Tezvergil-Mutluay A, Mutluay MM, Agee KA, Seseogullari-Dirihan R, Hoshika T, Cadenaro M, Breschi L, Vallittu P, Tay FR, Pashley DH. Carbodiimide cross-linking inactivates soluble and matrix-bound MMPs, in vitro. J Dent Res 2011; 91:192-6. [PMID: 22058118 DOI: 10.1177/0022034511427705] [Citation(s) in RCA: 84] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Matrix metalloproteinases (MMPs) cause collagen degradation in hybrid layers created by dentin adhesives. This in vitro study evaluated the feasibility of using a cross-linking agent, 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide (EDC), to inactivate soluble rhMMP-9, as an example of dentin MMPs, and matrix-bound dentin proteases. The inhibitory effects of 5 EDC concentrations (0.01-0.3 M) and 5 incubation times (1-30 min) on soluble rhMMP-9 were screened with an MMP assay kit. The same EDC concentrations were used to evaluate their inhibitory effects on endogenous proteinases from completely demineralized dentin beams that were incubated in simulated body fluid for 30 days. Decreases in modulus of elasticity (E) and dry mass of the beams, and increases in hydroxyproline content of hydrolysates derived from the incubation medium were used as indirect measures of matrix collagen hydrolysis. All EDC concentrations and pre-treatment times inactivated MMP-9 by 98% to 100% (p < 0.05) compared with non-cross-linked controls. Dentin beams incubated in 0.3 M EDC showed only a 9% decrease in E (45% decrease in control), a 3.6% to 5% loss of dry mass (18% loss in control), and significantly less solubilized hydroxyproline when compared with the control without EDC cross-linking (p < 0.05). It is concluded that EDC application for 1 min may be a clinically relevant and effective means for inactivating soluble rhMMP-9 and matrix-bound dentin proteinases if further studies demonstrate that EDC is not toxic to pulpal tissues.
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Tezvergil-Mutluay A, Agee KA, Uchiyama T, Imazato S, Mutluay MM, Cadenaro M, Breschi L, Nishitani Y, Tay FR, Pashley DH. The inhibitory effects of quaternary ammonium methacrylates on soluble and matrix-bound MMPs. J Dent Res 2011; 90:535-40. [PMID: 21212315 DOI: 10.1177/0022034510389472] [Citation(s) in RCA: 137] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Matrix metalloproteinases (MMPs) bound to dentin contribute to the progressive degradation of collagen fibrils in hybrid layers created by dentin adhesives. This study evaluated the MMP-inhibiting potential of quaternary ammonium methacrylates (QAMs), with soluble rhMMP-9 and a matrix-bound endogenous MMP model. Six different QAMs were initially screened by a rhMMP-9 colorimetric assay. For the matrix-bound endogenous MMPs, we aged demineralized dentin beams for 30 days in calcium- and zinc-containing media (CM; control), chlorhexidine, or QAMs in CM to determine the changes in dry mass loss and solubilization of collagen peptides against baseline levels. The inhibitory effects of QAMs on soluble rhMMP-9 varied between 34 and 100%. Beams incubated in CM showed a 29% decrease in dry mass (p < 0.05), whereas beams incubated with QAMs showed only 0.2%-6% loss of dry mass. Significantly more solubilized collagen was detected from beams incubated in CM (p < 0.05). It is concluded that QAMs exhibited dentin MMP inhibition comparable with that of chlorhexidine, but required higher concentrations.
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Marchesi G, Frassetto A, Navarra C, Turco G, Cadenaro M, Breschi L. Effects of 6-month water storage on microtensile bond strength of self-etch adhesives. Dent Mater 2011. [DOI: 10.1016/j.dental.2011.08.428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Turco G, Frassetto A, Spagnolo I, Navarra C, Marchesi G, Cadenaro M, Breschi L. Influence of chewing simulation on bond strength of cemented ceramic-disks. Dent Mater 2011. [DOI: 10.1016/j.dental.2011.08.459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Frassetto A, Turco G, Spagnolo I, Marchesi G, Navarra C, Breschi L, Cadenaro M. Influence of chewing simulation on bond strength of cemented composite-disks. Dent Mater 2011. [DOI: 10.1016/j.dental.2011.08.423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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Navarra C, Turco G, Marchesi G, Frassetto A, Di Lenarda R, Breschi L, Cadenaro M. Raman analysis of the adhesive interface after dentin pre-treatment with QAM-based primers. Dent Mater 2011. [DOI: 10.1016/j.dental.2011.08.432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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Mazzoni A, Papa V, Carrilho M, Cadenaro M, Dorigo E, Pashley D, Breschi L. Effect of bonding on MMP-2 in human dentin. Dent Mater 2010. [DOI: 10.1016/j.dental.2009.11.116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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41
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Codan B, Breschi L, de Stefano Dorigo E, Cadenaro M. Evaluation of polymerization stress correlated with the extent of polymerization of flowable composites. Dent Mater 2010. [DOI: 10.1016/j.dental.2010.08.055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Visintini E, Cadenaro M, di Lenarda R, Tay F, Pashley D, Breschi L. QAM-based primers do not affect immediate bond strength of an etch-and-rinse adhesive. Dent Mater 2010. [DOI: 10.1016/j.dental.2010.08.044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Angeloni V, Marchesi G, Cadenaro M, Mazzoni A, Tay F, Pashley D, Breschi L. The effect of chlorhexidine pre-treatment on the bond strength of fiber posts. Dent Mater 2010. [DOI: 10.1016/j.dental.2010.08.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Frassetto A, Marchesi G, Codan B, Di Lenarda R, Breschi L, Cadenaro M. Contraction stress of two self-adhesive cements. Dent Mater 2010. [DOI: 10.1016/j.dental.2010.08.116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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45
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Liani G, Codan B, Di Lenarda R, Breschi L, Cadenaro M. Polymerization of dental sealants: Influence of exposure times and curing-units. Dent Mater 2010. [DOI: 10.1016/j.dental.2010.08.074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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46
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Marchesi G, Cadenaro M, Di Lenarda R, Tay F, Pashley D, Breschi L. Influence of ethanol on E-modulus of experimental adhesive blends. Dent Mater 2010. [DOI: 10.1016/j.dental.2010.08.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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47
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Ferrari M, Carvalho CA, Goracci C, Antoniolli F, Mazzoni A, Mazzotti G, Cadenaro M, Breschi L. Influence of luting material filler content on post cementation. J Dent Res 2009; 88:951-6. [PMID: 19783806 DOI: 10.1177/0022034509342851] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Luting of fiber posts to intra-radicular dentin represents the worst-case scenario in terms of control of polymerization shrinkage. This study tested the hypothesis that filler content of resin cements does not influence luting of fiber posts to intra-radicular dentin, by assaying polymerization stress, push-out bond strength, and nanoleakage expression. The polymerization stress of experimental cements containing 10%, 30%, 50%, or 70% in filler content was investigated. Post spaces were prepared in endodontically treated teeth, and fiber posts were cemented with the experimental cements. A push-out test was performed, and interfacial nanoleakage expression was analyzed. Results showed that luting cements with higher filler content were related to increased polymerization stress (p < 0.05), decreased push-out bond strength (p < 0.05), and increased interfacial nanoleakage expression (p < 0.05). Conversely, lower-stress luting materials increased bonding of fiber posts to intra-radicular dentin. Further in vivo studies are needed to investigate the long-term clinical performance of these materials.
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Cadenaro M, Pashley D, Marchesi G, Carrilho M, Antoniolli F, Mazzoni A, Tay F, Di Lenarda R, Breschi L. Influence of chlorhexidine on the degree of conversion and E-modulus of experimental adhesive blends. Dent Mater 2009; 25:1269-74. [DOI: 10.1016/j.dental.2009.05.008] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2008] [Accepted: 05/27/2009] [Indexed: 11/29/2022]
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49
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Navarra C, Cadenaro M, Antoniolli F, Di Lenarda R, Breschi L. Degree of conversion of the hybrid layer of three self-etching adhesives. Dent Mater 2009. [DOI: 10.1016/j.dental.2009.01.068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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50
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Visintini E, Martin P, Gotti J, Cadenaro M, Di Lenarda R, Breschi L. Microtensile bond strength before and after aging of self-etch adhesives. Dent Mater 2009. [DOI: 10.1016/j.dental.2009.01.063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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