Curing potential of dual-polymerizable resin cements in simulated clinical situations

Caughman, W. Frank; Chan, Daniel C.N.

doi:10.1067/mpr.2001.114842

Cited by 86 publications

(78 citation statements)

References 11 publications

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“…But all processes within this study were performed strictly according to the manufacturer's instructions (calibration of the investigators was done during some pilot experiments). Especially variations of the manual mixing processes had to be avoided as far as possible 31. It is known, that besides internal and marginal accuracy of the restorations also the cement space is a determining factor for retentive strength 32.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of removal forces of implant-supported zirconia copings depending on abutment geometry, luting agent and cleaning method during re-cementation

Rödiger¹,

Rinke²,

Ehret-Kleinau³

et al. 2014

J Adv Prosthodont

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PURPOSETo evaluate the effects of different abutment geometries in combination with varying luting agents and the effectiveness of different cleaning methods (prior to re-cementation) regarding the retentiveness of zirconia copings on implants.MATERIALS AND METHODSImplants were embedded in resin blocks. Three groups of titanium abutments (pre-fabricated, height: 7.5 mm, taper: 5.7°; customized-long, height: 6.79 mm, taper: 4.8°; customized-short, height: 4.31 mm, taper: 4.8°) were used for luting of CAD/CAM-fabricated zirconia copings with a semi-permanent (Telio CS) and a provisional cement (TempBond NE). Retention forces were evaluated using a universal testing machine. Furthermore, the influence of cleaning methods (manually, manually in combination with ultrasonic bath or sandblasting) prior to re-cementation with a provisional cement (TempBond NE) was investigated with the pre-fabricated titanium abutments (height: 7.5 mm, taper: 5.7°) and SEM-analysis of inner surfaces of the copings was performed. Significant differences were determined via two-way ANOVA.RESULTSSignificant interactions between abutment geometry and luting agent were observed. TempBond NE showed the highest level of retentiveness on customized-long abutments, but was negatively affected by other abutment geometries. In contrast, luting with Telio CS demonstrated consistent results irrespective of the varying abutment geometries. Manual cleaning in combination with an ultrasonic bath was the only cleaning method tested prior to re-cementation that revealed retentiveness levels not inferior to primary cementation.CONCLUSIONNo superiority for one of the two cements could be demonstrated because their influences on retentive strength are also depending on abutment geometry. Only manual cleaning in combination with an ultrasonic bath offers retentiveness levels after re-cementation comparable to those of primary luting.

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Section: Discussionmentioning

confidence: 99%

Evaluation of removal forces of implant-supported zirconia copings depending on abutment geometry, luting agent and cleaning method during re-cementation

Rödiger¹,

Rinke²,

Ehret-Kleinau³

et al. 2014

J Adv Prosthodont

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“…Dual-cured resin cements possess a chemical curing system that can achieve complete polymerization in dark localizations 10 alongside a light-curing mechanism that allows for an extended working time and a rapid initial hardening of the resin cement to stabilize the restoration. 12 Hence, indirect resin composite restorations with a thickness > 3 mm should be luted with dualcure resin cements, 13 as the restorative material significantly reduces the amount of light reaching the bottom of the restoration. [14][15][16][17] These cements possess complementary and independent chemical and light activation mechanisms, 18 and the former would be largely responsible for the curing at sites not reached by the light exposure.…”

Section: Clinical Significancementioning

confidence: 99%

“…[14][15][16][17] These cements possess complementary and independent chemical and light activation mechanisms, 18 and the former would be largely responsible for the curing at sites not reached by the light exposure. The chemical curing component in some dual-cure resin composites has been described as slower, less effective, 3,12,13,19,20 or virtually ineffective. 10,15,21,22 Deficient polymerization of the resin cement negatively affects its physical and mechanical properties (e.g., hardness, modulus, flexural strength, occlusal wear, and water sorption and solubility) and reduces its bond strength to dental structures.…”

Section: Clinical Significancementioning

confidence: 99%

“…10,15,21,22 Deficient polymerization of the resin cement negatively affects its physical and mechanical properties (e.g., hardness, modulus, flexural strength, occlusal wear, and water sorption and solubility) and reduces its bond strength to dental structures. 3,10,13,15,19 In the clinical setting, the mechanical properties of dual-cured cements must be sufficient to withstand occlusal and masticatory forces immediately after cementation. 14,23…”

Section: Clinical Significancementioning

confidence: 99%

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Early Hardness of Self‐Adhesive Resin Cements Cured under Indirect Resin Composite Restorations

Giráldez

Ceballos

Garrido

et al. 2011

J Esthet Restor Dent

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Dual-curing resin cements should always be light-cured for longer irradiation times, as light irradiation for 80 seconds yields the highest microhardness values in comparison with self-curing or light irradiation for 40 seconds. However, some self-adhesive resin cements exhibit low microhardness values when used to cement 4-mm-thick indirect composite restorations regardless of the curing mode applied.

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“…[589] The degree of conversion achieved by a composite provides valid information about the durability and biological safety of the restoration because it affects the mechanical properties and degradation by water and oral acids. [10] The release of uncured residual monomers presents a potentially sensitizing and irritating factor for the oral tissues. [1112] Lack of adequate polymerization, principally in the apical region, may also lead to elution of monomers to the apical foramen.…”

Section: Introductionmentioning

confidence: 99%

Microhardness of dual-polymerized resin cement around a translucent fiber post in the intraradicular environment

et al. 2011

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Aim:In this study, we evaluated the effect of photopolymerization on Vickers microhardness of dual-polymerized resin cement at three locations when a translucent quartz fiber post was used.Materials and Methods:Single-rooted bovine teeth received quartz fiber post systems (length: 12 mm) using a dual-polymerized resin cement. In Group 1, the posts were cemented but not photopolymerized, and in Group 2, the posts were both cemented and photopolymerized. After cementation, approximately 1.5-mm thick sections were obtained (two cervical, two middle, and two apical) for regional microhardness evaluations.Statistical Analysis:Statistical analyses were performed using the SPSS software (ver. 11.0 for Windows; SPSS, Inc., Chicago, IL, USA). Microhardness (kg/mm2) data were submitted to two-way analysis of variance (two-way ANOVA) and repeated measures with microhardness values as the dependent variable and polymerization status (two levels: with and without) and root region (three levels: cervical, middle, and apical) as independent variables. Multiple comparisons were made using Dunnett's T3 post-hoc test. P values of <0.05 were considered to indicate statistical significance in all tests.Results:Photopolymerization did not significantly change the microhardness values when compared with no photopolymerization. Microhardness values also showed no significant difference between the three regions in the root canals in both groups.Conclusions:The mode of polymerization of the cement tested in combination with the translucent quartz fiber post system did not affect the microhardness of the cement at the cervical, middle, or apical regions of the root.

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Curing potential of dual-polymerizable resin cements in simulated clinical situations

Cited by 86 publications

References 11 publications

Evaluation of removal forces of implant-supported zirconia copings depending on abutment geometry, luting agent and cleaning method during re-cementation

Evaluation of removal forces of implant-supported zirconia copings depending on abutment geometry, luting agent and cleaning method during re-cementation

Early Hardness of Self‐Adhesive Resin Cements Cured under Indirect Resin Composite Restorations

Microhardness of dual-polymerized resin cement around a translucent fiber post in the intraradicular environment

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