Effect of Composite Resin Contamination with Powdered and Unpowdered Latex Gloves on Its Shear Bond Strength to Bovine Dentin

Oskoee, SS; Navimipour, EJ; Bahari, Mahmoud; Ajami, Amir Ahmad; Oskoee, PA; Abbasi, NM

doi:10.2341/11-088-l

Cited by 13 publications

(16 citation statements)

References 17 publications

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“…There are no specific studies in the literature reporting the effects of contamination of composites through digital manip- ulation with latex gloves in the mechanical properties of the composite resins. Some studies, however, show the negative influence of contamination by blood, 2 saliva, 3,4,15 latex gloves 5,7 and cleaning agents in the adhesive properties of restoratives to the dental substrata. Moreover, there is some evidence that the technique used for composite placement can directly affect the incorporation of bubbles and porosities in the material.…”

Section: Discussionmentioning

confidence: 97%

Contamination of Composite Resin by Glove Powder and Saliva Contaminants: Impact on Mechanical Properties and Incremental Layer Debonding

Martins

Schmitt

Oliveira

et al. 2015

Operative Dentistry

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This study investigated the influence of digital manipulation of a composite resin (Z250; 3M ESPE, St Paul, MN, USA) with gloves contaminated with powder and/or human stimulated saliva on the mechanical properties and incremental layer debonding of the restorative. The six groups tested were powdered gloves with or without saliva, powder-free gloves with or without saliva, powdered gloves with saliva cleaned with 70% ethanol, and no digital manipulation or contamination (control). Diametral tensile strength, flexural strength, flexural modulus, and incremental layer shear bond strength were evaluated. Each composite increment was digitally manipulated for 10 seconds. Data from each test were separately analyzed using analysis of variance and the Student-Newman-Keuls test (α=0.05). No significant differences for diametral tensile strength were observed. Manipulation of the composite using powder-free gloves with saliva or using gloves cleaned with ethanol generated higher flexural strength and modulus compared to the other groups. The control group and the group manipulated using powdered gloves with saliva generally showed lower mechanical performances. Lower incremental layer bond strength was observed for the group manipulated with powdered gloves without saliva. The control group and the groups manipulated with powdered gloves with saliva or cleaned with ethanol showed higher shear bond strengths. Most of the failures were cohesive. In conclusion, digital manipulation might be important for the composite resin to achieve better mechanical performance and incremental layer bond strength, provided that the gloves are not contaminated. Cleaning the gloves with ethanol might avoid the negative effects of digital manipulation using contaminated gloves.

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Section: Discussionmentioning

confidence: 97%

Contamination of Composite Resin by Glove Powder and Saliva Contaminants: Impact on Mechanical Properties and Incremental Layer Debonding

Martins

Schmitt

Oliveira

et al. 2015

Operative Dentistry

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show abstract

“…3 However, the effect of contaminants on composite resin manipulation is still unclear, due to few published studies on the subject. 4,5 In addition, there are professionals that manipulate the composite resin with their fingers during the restorative procedure, making both the composite and the bonding system highly vulnerable to contamination. 6 For that reason, the aim of this study was to evaluate the microhardness of the composite resin manually manipulated with latex gloves contaminated with saliva, alcohol and powder.…”

Section: Introductionmentioning

confidence: 99%

Effect of the manual manipulation of composite resin with latex gloves

Ñaupari-Villasante¹,

Cuadros-Sánchez²,

Tay³

2019

J Oral Res

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“…Adhesives with lower acidity are more sensitive to variations in the underlying layers [32]. The thickness of the smear layer, biofilm and any surface change or contamination can prevent a direct contact between the adhesive and the sound tooth structure, preventing the formation of an effective bond [33,34]. In the present study,…”

Section: Discussionmentioning

confidence: 72%

Effect of Galardin and its Solvents on the Microtensile Bond Strength of Different Adhesive Systems to Dentin

Chaharom

Bahari

Rahbar

et al. 2019

Pesqui. bras. odontopediatria clín. integr.

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Objective: To evaluate the effect of a synthetic inhibitor of MMPs (Galardin) and its solvents [ethanol and dimethyl sulfoxide (DMSO)] on the microtensile bond strength (µTBS) of adhesive systems to dentin. Material and Methods: Sound human third molars (n=180) were randomly assigned into 5 based on solution type: DMSO; ethanol; Galardin + DMSO; Galardin + ethanol; and distilled water as control. Then were further subdivided into 6 based on the adhesive system, i.e. 3-step and 2-step etch-and-rinse (ER), one-step and 2-step self-etch (SE) and universal in ER and SE strategies. The samples underwent a 500-round thermocycling procedure at 5±5/55±5°C and were sectioned into 1-mm2 pieces perpendicularly in a cutting machine. The µTBS was measured at a strain rate of 1 mm/min. Data were analyzed with two-way ANOVA and post hoc Games-Howell tests (p<0.05). Results: The adhesive system and the solution had significant effects on the µTBS (p<0.001). The universal adhesive in the SE mode resulted in a significant decrease in µTBS compared to the other adhesives (p<0.05). Ethanol, too, resulted in a significant decrease in µTBS compared to other solutions (p<0.05). Conclusion: Galardin and its solvents, except for ethanol, had no detrimental effects on the immediate µTBS.

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Effect of Composite Resin Contamination with Powdered and Unpowdered Latex Gloves on Its Shear Bond Strength to Bovine Dentin

Cited by 13 publications

References 17 publications

Contamination of Composite Resin by Glove Powder and Saliva Contaminants: Impact on Mechanical Properties and Incremental Layer Debonding

Contamination of Composite Resin by Glove Powder and Saliva Contaminants: Impact on Mechanical Properties and Incremental Layer Debonding

Effect of the manual manipulation of composite resin with latex gloves

Effect of Galardin and its Solvents on the Microtensile Bond Strength of Different Adhesive Systems to Dentin

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