Evaluation of sorption/solubility, softening, flexural strength and elastic modulus of experimental resin blends with chlorhexidine

Luciana Tiemi Inagaki, Vanessa Benetello Dainezi, Roberta Caroline Bruschi Alonso, Andréia Bolzan De Paula, Franklin Garcia-Godoy, Regina Maria Puppin-Rontani, Fernanda Miori Pascon

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Abstract

Objectives To evaluate physical-chemical properties of experimental diacetate chlorhexidine (CHX)-added resin blends. Methods Blends were formulated: G1)TEGDMA; G2)TEGDMA/0.1%CHX; G3)TEGDMA/0.2%CHX; G4)TEGDMA/UDMA; G5)TEGDMA/UDMA/0.1%CHX; G6)TEGDMA/UDMA/0.2%CHX; G7)TEGDMA/BisEMA, G8)TEGDMA/BisEMA/0.1%CHX; G9)TEGDMA/BisEMA/0.2%CHX. Icon® was the control group. For sorption/solubility (SS), cylindrical specimens (n = 5) were prepared and their weight obtained. The specimens were immersed in deionized water for 7 days at 37 °C and their weight was verified again. SS were calculated using accepted formulas. For softening, cylindrical specimens (n = 10) were prepared and initial Knoop hardness number (KHN) obtained. The specimens were immersed in absolute ethanol for 24 h at 37 °C and final KHN accomplished. Softening values were calculated by KHN reduction percentage. For elastic modulus (EM) and flexural strength (FS) bar specimens were prepared (n = 10) and values obtained with a universal device (three point, 5 mm distance, 0.5 mm/min, load of 50 N). The data was analyzed using one-way ANOVA and Tukey test (α = 5%). Results TEGDMA/BisEMA blends and Icon® showed the lowest sorption from blends (p > 0.05), and Icon® was the most soluble material (p < 0.01). TEGDMA/UDMA/0.1%CHX showed the highest softening, similar to Icon® (p > 0.05). For EM, all blends were different than Icon® (p < 0.01). For FS, TEGDMA blends were similar to Icon®, showing the lowest averages (p > 0.05). Conclusions Monomers chemical characteristics influenced the physical-chemical properties of experimental blends more than CHX. Between the blends tested, UDMA blends presented satisfactory results for assays evaluated. Clinical significance Infiltrants CHX-added could arrest and reinforce initial caries lesions, and the antimicrobial effect could prevent new lesions in sound enamel adjacent to the infiltrated area.

Original languageEnglish (US)
Pages (from-to)40-45
Number of pages6
JournalJournal of Dentistry
Volume49
DOIs
StatePublished - Jun 1 2016

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Chlorhexidine
Elastic Modulus
Solubility
Hardness
triethylene glycol dimethacrylate
Weights and Measures
Dental Enamel
Analysis of Variance
Ethanol
Equipment and Supplies
Control Groups

All Science Journal Classification (ASJC) codes

  • Dentistry(all)

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Evaluation of sorption/solubility, softening, flexural strength and elastic modulus of experimental resin blends with chlorhexidine. / Inagaki, Luciana Tiemi; Dainezi, Vanessa Benetello; Alonso, Roberta Caroline Bruschi; Paula, Andréia Bolzan De; Garcia-Godoy, Franklin; Puppin-Rontani, Regina Maria; Pascon, Fernanda Miori.

In: Journal of Dentistry, Vol. 49, 01.06.2016, p. 40-45.

Research output: Contribution to journalArticle

Inagaki, Luciana Tiemi ; Dainezi, Vanessa Benetello ; Alonso, Roberta Caroline Bruschi ; Paula, Andréia Bolzan De ; Garcia-Godoy, Franklin ; Puppin-Rontani, Regina Maria ; Pascon, Fernanda Miori. / Evaluation of sorption/solubility, softening, flexural strength and elastic modulus of experimental resin blends with chlorhexidine. In: Journal of Dentistry. 2016 ; Vol. 49. pp. 40-45.
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title = "Evaluation of sorption/solubility, softening, flexural strength and elastic modulus of experimental resin blends with chlorhexidine",
abstract = "Objectives To evaluate physical-chemical properties of experimental diacetate chlorhexidine (CHX)-added resin blends. Methods Blends were formulated: G1)TEGDMA; G2)TEGDMA/0.1{\%}CHX; G3)TEGDMA/0.2{\%}CHX; G4)TEGDMA/UDMA; G5)TEGDMA/UDMA/0.1{\%}CHX; G6)TEGDMA/UDMA/0.2{\%}CHX; G7)TEGDMA/BisEMA, G8)TEGDMA/BisEMA/0.1{\%}CHX; G9)TEGDMA/BisEMA/0.2{\%}CHX. Icon{\circledR} was the control group. For sorption/solubility (SS), cylindrical specimens (n = 5) were prepared and their weight obtained. The specimens were immersed in deionized water for 7 days at 37 °C and their weight was verified again. SS were calculated using accepted formulas. For softening, cylindrical specimens (n = 10) were prepared and initial Knoop hardness number (KHN) obtained. The specimens were immersed in absolute ethanol for 24 h at 37 °C and final KHN accomplished. Softening values were calculated by KHN reduction percentage. For elastic modulus (EM) and flexural strength (FS) bar specimens were prepared (n = 10) and values obtained with a universal device (three point, 5 mm distance, 0.5 mm/min, load of 50 N). The data was analyzed using one-way ANOVA and Tukey test (α = 5{\%}). Results TEGDMA/BisEMA blends and Icon{\circledR} showed the lowest sorption from blends (p > 0.05), and Icon{\circledR} was the most soluble material (p < 0.01). TEGDMA/UDMA/0.1{\%}CHX showed the highest softening, similar to Icon{\circledR} (p > 0.05). For EM, all blends were different than Icon{\circledR} (p < 0.01). For FS, TEGDMA blends were similar to Icon{\circledR}, showing the lowest averages (p > 0.05). Conclusions Monomers chemical characteristics influenced the physical-chemical properties of experimental blends more than CHX. Between the blends tested, UDMA blends presented satisfactory results for assays evaluated. Clinical significance Infiltrants CHX-added could arrest and reinforce initial caries lesions, and the antimicrobial effect could prevent new lesions in sound enamel adjacent to the infiltrated area.",
author = "Inagaki, {Luciana Tiemi} and Dainezi, {Vanessa Benetello} and Alonso, {Roberta Caroline Bruschi} and Paula, {Andr{\'e}ia Bolzan De} and Franklin Garcia-Godoy and Puppin-Rontani, {Regina Maria} and Pascon, {Fernanda Miori}",
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T1 - Evaluation of sorption/solubility, softening, flexural strength and elastic modulus of experimental resin blends with chlorhexidine

AU - Inagaki, Luciana Tiemi

AU - Dainezi, Vanessa Benetello

AU - Alonso, Roberta Caroline Bruschi

AU - Paula, Andréia Bolzan De

AU - Garcia-Godoy, Franklin

AU - Puppin-Rontani, Regina Maria

AU - Pascon, Fernanda Miori

PY - 2016/6/1

Y1 - 2016/6/1

N2 - Objectives To evaluate physical-chemical properties of experimental diacetate chlorhexidine (CHX)-added resin blends. Methods Blends were formulated: G1)TEGDMA; G2)TEGDMA/0.1%CHX; G3)TEGDMA/0.2%CHX; G4)TEGDMA/UDMA; G5)TEGDMA/UDMA/0.1%CHX; G6)TEGDMA/UDMA/0.2%CHX; G7)TEGDMA/BisEMA, G8)TEGDMA/BisEMA/0.1%CHX; G9)TEGDMA/BisEMA/0.2%CHX. Icon® was the control group. For sorption/solubility (SS), cylindrical specimens (n = 5) were prepared and their weight obtained. The specimens were immersed in deionized water for 7 days at 37 °C and their weight was verified again. SS were calculated using accepted formulas. For softening, cylindrical specimens (n = 10) were prepared and initial Knoop hardness number (KHN) obtained. The specimens were immersed in absolute ethanol for 24 h at 37 °C and final KHN accomplished. Softening values were calculated by KHN reduction percentage. For elastic modulus (EM) and flexural strength (FS) bar specimens were prepared (n = 10) and values obtained with a universal device (three point, 5 mm distance, 0.5 mm/min, load of 50 N). The data was analyzed using one-way ANOVA and Tukey test (α = 5%). Results TEGDMA/BisEMA blends and Icon® showed the lowest sorption from blends (p > 0.05), and Icon® was the most soluble material (p < 0.01). TEGDMA/UDMA/0.1%CHX showed the highest softening, similar to Icon® (p > 0.05). For EM, all blends were different than Icon® (p < 0.01). For FS, TEGDMA blends were similar to Icon®, showing the lowest averages (p > 0.05). Conclusions Monomers chemical characteristics influenced the physical-chemical properties of experimental blends more than CHX. Between the blends tested, UDMA blends presented satisfactory results for assays evaluated. Clinical significance Infiltrants CHX-added could arrest and reinforce initial caries lesions, and the antimicrobial effect could prevent new lesions in sound enamel adjacent to the infiltrated area.

AB - Objectives To evaluate physical-chemical properties of experimental diacetate chlorhexidine (CHX)-added resin blends. Methods Blends were formulated: G1)TEGDMA; G2)TEGDMA/0.1%CHX; G3)TEGDMA/0.2%CHX; G4)TEGDMA/UDMA; G5)TEGDMA/UDMA/0.1%CHX; G6)TEGDMA/UDMA/0.2%CHX; G7)TEGDMA/BisEMA, G8)TEGDMA/BisEMA/0.1%CHX; G9)TEGDMA/BisEMA/0.2%CHX. Icon® was the control group. For sorption/solubility (SS), cylindrical specimens (n = 5) were prepared and their weight obtained. The specimens were immersed in deionized water for 7 days at 37 °C and their weight was verified again. SS were calculated using accepted formulas. For softening, cylindrical specimens (n = 10) were prepared and initial Knoop hardness number (KHN) obtained. The specimens were immersed in absolute ethanol for 24 h at 37 °C and final KHN accomplished. Softening values were calculated by KHN reduction percentage. For elastic modulus (EM) and flexural strength (FS) bar specimens were prepared (n = 10) and values obtained with a universal device (three point, 5 mm distance, 0.5 mm/min, load of 50 N). The data was analyzed using one-way ANOVA and Tukey test (α = 5%). Results TEGDMA/BisEMA blends and Icon® showed the lowest sorption from blends (p > 0.05), and Icon® was the most soluble material (p < 0.01). TEGDMA/UDMA/0.1%CHX showed the highest softening, similar to Icon® (p > 0.05). For EM, all blends were different than Icon® (p < 0.01). For FS, TEGDMA blends were similar to Icon®, showing the lowest averages (p > 0.05). Conclusions Monomers chemical characteristics influenced the physical-chemical properties of experimental blends more than CHX. Between the blends tested, UDMA blends presented satisfactory results for assays evaluated. Clinical significance Infiltrants CHX-added could arrest and reinforce initial caries lesions, and the antimicrobial effect could prevent new lesions in sound enamel adjacent to the infiltrated area.

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