Immediate Bonding to Bleached Enamel

El-din, Amal K Nour; Miller, Bess; Griggs, Jason A.; Wakefield, Charles W

doi:10.2341/04-201

Cited by 62 publications

(56 citation statements)

References 28 publications

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“…These results are consistent with many in vitro studies that have found lower shear bond strengths immediately following whitening therapy. 33,[38][39][40][41][42][43][44][45] Additionally, like other research, 39,40,42,[45][46] at least 14 days of recovery following vital whitening therapy is needed to regain optimal bonding characteristics to approach control values. However, one can question whether there is a clinically significant difference in SBS.…”

Section: Discussionmentioning

confidence: 99%

Clinical Evaluation of 15% Carbamide Peroxide on the Surface Microhardness and Shear Bond Strength of Human Enamel

Metz¹,

Cochran²,

Matis³

et al. 2007

Operative Dentistry

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Clinical RelevanceThe clinical use of whitening chemicals should provide patients with some degree of certainty that there are no detrimental effects over time. Loss of surface hardness and polymerization inhibition are areas of concern in the literature and need clinical validation for both the practitioner and patient. SUMMARYPurpose: This clinical evaluation compared a neutral sodium fluoridated whitening product to a neutral non-fluoridated whitening product in terms their effects on human enamel surface microhardness (SMH) and human enamel/resin composite shear bond strength (SBS) following various treatment times. Materials and Methods: Subjects were evaluated for enamel SMH and enamel/resin SBS following 15% carbamide peroxide (CP) with and without potassium nitrate and fluoride (PF). Twenty subjects (80 first or second premolars), who were treatment-planned for premolar extraction due to orthodontic therapy, were allocated into two groups, A and B. Group A received 15% CP, while Group B received 15% CP with PF. Each patient had a control tooth, a 14-day treatment + 14-day recovery tooth, a 14-day treatment + no recovery tooth and a 4-day + no recovery tooth. Each tooth was fur-

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Section: Discussionmentioning

confidence: 99%

Clinical Evaluation of 15% Carbamide Peroxide on the Surface Microhardness and Shear Bond Strength of Human Enamel

Metz¹,

Cochran²,

Matis³

et al. 2007

Operative Dentistry

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“…Several studies have reported that less depth of resin tag penetration in bleached enamel compared to unbleached enamel can be seen using SEM 4 and optical light microscopy. 48 Decreased bond strength of the resin composite has been reported to be vastly related to the quality of resin tags.…”

Section: Da Silva and Othersmentioning

confidence: 99%

“…However, it has been reported that no bond strength and failure mode standardization can be observed and there is no correlation between the failure mode and bond strength value. 4 Further investigations are needed to explore the influence of the curing time of different light intensities of LCUs on resin bonded immediately after bleaching to enamel and dentin.…”

Section: Da Silva and Othersmentioning

confidence: 99%

“…There have been a number of reports on the interaction between bleaching agents and bonding strengths of resin composite to enamel. [1][2][3][4] Delaying the placement of resin composite restorations from one-to-three weeks after bleaching has been recommended by many researchers. [1][2][3] However, immediate resin composite restorations may be indicated after the bleaching procedure to achieve better esthetic results.…”

Section: Introductionmentioning

confidence: 99%

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Influence of Prolonged Light-curing Time on the Shear Bonding Strength of Resin to Bleached Enamel

Hussain¹

2010

Operative Dentistry

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©Operative Dentistry, 2010, 35-6, 672-681 M Hussain • Y Wang Clinical RelevanceThe bonding strength of resin composite to bleached enamel can be enhanced by increasing the light exposure time of light-emitting diode units if bonding is delayed for 24 hours. SUMMARYThis study evaluated the effect of prolonged light-curing time using a light-emitting diode unit (LED) on the shear bond strength of a resin composite to enamel immediately after bleaching. The enamel surfaces of human molars were divided into four groups: one control and three bleaching groups. One bleaching group (CP) was exposed to a 10% carbamide peroxide bleaching agent and bonded after 24 hours. The other two bleaching groups (HP) were bleached with a 38% hydrogen peroxide bleaching agent, then bonded either within one hour (HPA) or after 24 hours (HPB). All groups were subdivided into two subgroups and cured for two different times (20 or 40 seconds) with an LED unit. Shear bond strength (SBS) was tested with a universal-testing machine and the data were analyzed by ANOVA and post-hoc tests. Scanning electron micrographs of representative specimens were taken. A significant difference was seen between the control and HPA groups for both curing times (p=0.000). However, neither the CP nor HPB groups showed any significant differences compared with the control groups (p>0.05). Twoway ANOVA showed that a significant effect of the curing time factor was recorded for all groups (p=0.000). Prolonged curing time, using an LED unit with a light intensity of 500 mW/cm 2 , increased resin-enamel bonding strengths for the control and bleached groups when bonding was performed after 24 hours of immersion in deionized water. However, the SBS was still compromised when bonding was performed immediately to enamel bleached with 38% HP.

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“…Several studies have shown that there is a decrease in bonding strength to bleached enamel/ dentin when adhesive restorations are performed directly after different bleaching techniques (Amaral et al, 2008;Nour El-din et al, 2006). This fact can be attributed to morphological and/or chemical changes in substrates, or even to the presence of residual oxygen in the inner dental tissues, which interferes with the polymerization reaction in adhesive systems and composite resins by inhibiting the generation of free radicals (Burgess & Cakir, 2010;Weinmann et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Influence of Tooth Bleaching on the Bonding Strength of Silorane-Based Restorative System

Monteiro

Carneiro

Nogueira

et al. 2015

Int. J. Odontostomat.

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Bleaching procedures can interfere on adhesive bonding of methacrylate-based restorative materials. After introduction of silorane-based composites, little information is available about this interaction. The objective is evaluate the influence of bleaching on enamel shear bond strength of silorane-based restorative system. Forty sound incisive bovine teeth were randomly divided into 04 groups (n= 10), being: G1 (control) -not bleached + Clearfil SE Bond (CSEB)/Filtek Z250 (Z250), G2 (control) -not bleached + Silorane Adhesive (SA)/Filtek P90 (P90), G3 -bleached + CSEB/Z250; G4 -bleached + SA/P90. The teeth were sectioned, had crowns included in a PVC rings, and the enamel surfaces gridded and polished with silicon carbide abrasive papers. G1 and G2 were stored in artificial saliva (37 ºC), daily renewed, for a period of 04 days. G3 and G4 were exposed to 02 sessions of 38% hydrogen peroxide (38HP), with 03 applications of 15 min in each session. Composite resin cylinders were built up on the enamel surfaces. Bonding procedures were performed according the manufacturer's instructions. After storage in distilled water for 24 h (37 ºC), the samples were submitted to shear bond test. Data were analyzed by two-way ANOVA and t (LSD) tests (5%). Intra group comparison showed significant difference for Z250 after bleaching, but not for P90. Shear strength was significant lower for P90, despite bleaching procedures. In conclusion, 38HP bleaching had no influence on the enamel bond strength of P90, even though presenting lower bond strength than Z250.

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Immediate Bonding to Bleached Enamel

Cited by 62 publications

References 28 publications

Clinical Evaluation of 15% Carbamide Peroxide on the Surface Microhardness and Shear Bond Strength of Human Enamel

Clinical Evaluation of 15% Carbamide Peroxide on the Surface Microhardness and Shear Bond Strength of Human Enamel

Influence of Prolonged Light-curing Time on the Shear Bonding Strength of Resin to Bleached Enamel

Influence of Tooth Bleaching on the Bonding Strength of Silorane-Based Restorative System

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