The effect of bleaching gel application on the physical properties of different CAD/CAM restorative materials

JHR Rangel; RF Zanatta; AL Albuquerque

The effect of bleaching gel application on the physical properties of different CAD/CAM restorative materials

JHR Rangel
, RF Zanatta
, AL Albuquerque

Research output: Contribution to Journal › Article › Academic › peer-review

Abstract

Objective: To evaluate the surface roughness and microhardness of CAD/CAM lithium disilicate, feldspathic ceramic, polymer infiltrated ceramic and nanohybrid composite before and after the application of bleaching gel.

Material and methods: Disc shaped specimens were polished and divided into quadrants for roughness (Ra) and microhardness (Vickers, 19.61 N, 20 s) measurements. The 35% hydrogen peroxide was applied simulating three in-office bleaching sessions.

Results: Paired t-test (α=0.05) showed that bleaching gel application did not affect the surface roughness of the tested material. The microhardness of polymeric materials (polymer infiltrated ceramic and nanohybrid composite) presented statistical significant increase (2 % increase, which may be clinically insignificant).

Conclusion: Microhardness of polymeric CAD/CAM materials may be affected by
bleaching gel application.

Original language	English
Pages (from-to)	41-44
Number of pages	4
Journal	Journal of Dental Health, Oral Disorders & Therapy
Volume	12
Issue number	2
Early online date	14 May 2021
Publication status	Published - 2021
Externally published	Yes

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@article{82d5f55fdb9f4891b9434250d2abdb15,

title = "The effect of bleaching gel application on the physical properties of different CAD/CAM restorative materials",

abstract = "Objective: To evaluate the surface roughness and microhardness of CAD/CAM lithium disilicate, feldspathic ceramic, polymer infiltrated ceramic and nanohybrid composite before and after the application of bleaching gel. Material and methods: Disc shaped specimens were polished and divided into quadrants for roughness (Ra) and microhardness (Vickers, 19.61 N, 20 s) measurements. The 35\% hydrogen peroxide was applied simulating three in-office bleaching sessions. Results: Paired t-test (α=0.05) showed that bleaching gel application did not affect the surface roughness of the tested material. The microhardness of polymeric materials (polymer infiltrated ceramic and nanohybrid composite) presented statistical significant increase (2 \% increase, which may be clinically insignificant). Conclusion: Microhardness of polymeric CAD/CAM materials may be affected by bleaching gel application.",

author = "JHR Rangel and RF Zanatta and AL Albuquerque",

year = "2021",

language = "English",

volume = "12",

pages = "41--44",

journal = "Journal of Dental Health, Oral Disorders \& Therapy",

issn = "2373-4345",

publisher = "MedGrave Group",

number = "2",

}

TY - JOUR

T1 - The effect of bleaching gel application on the physical properties of different CAD/CAM restorative materials

AU - Rangel, JHR

AU - Zanatta, RF

AU - Albuquerque, AL

PY - 2021

Y1 - 2021

N2 - Objective: To evaluate the surface roughness and microhardness of CAD/CAM lithium disilicate, feldspathic ceramic, polymer infiltrated ceramic and nanohybrid composite before and after the application of bleaching gel. Material and methods: Disc shaped specimens were polished and divided into quadrants for roughness (Ra) and microhardness (Vickers, 19.61 N, 20 s) measurements. The 35% hydrogen peroxide was applied simulating three in-office bleaching sessions. Results: Paired t-test (α=0.05) showed that bleaching gel application did not affect the surface roughness of the tested material. The microhardness of polymeric materials (polymer infiltrated ceramic and nanohybrid composite) presented statistical significant increase (2 % increase, which may be clinically insignificant). Conclusion: Microhardness of polymeric CAD/CAM materials may be affected by bleaching gel application.

AB - Objective: To evaluate the surface roughness and microhardness of CAD/CAM lithium disilicate, feldspathic ceramic, polymer infiltrated ceramic and nanohybrid composite before and after the application of bleaching gel. Material and methods: Disc shaped specimens were polished and divided into quadrants for roughness (Ra) and microhardness (Vickers, 19.61 N, 20 s) measurements. The 35% hydrogen peroxide was applied simulating three in-office bleaching sessions. Results: Paired t-test (α=0.05) showed that bleaching gel application did not affect the surface roughness of the tested material. The microhardness of polymeric materials (polymer infiltrated ceramic and nanohybrid composite) presented statistical significant increase (2 % increase, which may be clinically insignificant). Conclusion: Microhardness of polymeric CAD/CAM materials may be affected by bleaching gel application.

UR - https://medcraveonline.com/JDHODT/

M3 - Article

SN - 2373-4345

VL - 12

SP - 41

EP - 44

JO - Journal of Dental Health, Oral Disorders & Therapy

JF - Journal of Dental Health, Oral Disorders & Therapy

IS - 2

ER -

The effect of bleaching gel application on the physical properties of different CAD/CAM restorative materials

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