Repairing fractured ceramic veneer with CAD/CAM ceramic blocks: a preliminary tensile bond strength study

Mae Hyun Hwang; Hae Ri Kim; Tae Yub Kwon

doi:10.1080/10667857.2018.1495881

Repairing fractured ceramic veneer with CAD/CAM ceramic blocks: a preliminary tensile bond strength study

Mae Hyun Hwang, Hae Ri Kim, Tae Yub Kwon

Department of Dentistry

Kyungpook National University

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

The tensile bond strength (TBS) of four CAD/CAM ceramic blocks and one composite resin bonded to a veneering ceramic was evaluated. Prior to silanisation, the surfaces were etched with hydrofluoric acid. A resin cement was sandwiched (50 μm thickness/2.5 mm diameter) between the CAD/CAM ceramic rod and the veneering ceramic. A composite resin (Filtek Z250) (control) was directly bonded to the veneering ceramic. All the bonded specimens were stored in water at 37°C for 24 h, and then half of them were additionally thermocycled prior to a TBS test. The CAD/CAM groups exhibited significantly higher TBS values and significantly higher or statistically similar Weibull moduli compared with those of the control group. Neither the TBS values nor the Weibull moduli were significantly altered by thermocycling. This study suggests that fractured veneers are more effectively repaired by CAD/CAM ceramic restorations and resin cement than direct intraoral repair in terms of TBS.

Original language	English
Pages (from-to)	43-50
Number of pages	8
Journal	Materials Technology
Volume	34
Issue number	1
DOIs	https://doi.org/10.1080/10667857.2018.1495881
State	Published - 2 Jan 2019

Keywords

bond strength
CAD/CAM
ceramic repair
hydrofluoric acid
silane
Weibull analysis

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10.1080/10667857.2018.1495881

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title = "Repairing fractured ceramic veneer with CAD/CAM ceramic blocks: a preliminary tensile bond strength study",

abstract = "The tensile bond strength (TBS) of four CAD/CAM ceramic blocks and one composite resin bonded to a veneering ceramic was evaluated. Prior to silanisation, the surfaces were etched with hydrofluoric acid. A resin cement was sandwiched (50 μm thickness/2.5 mm diameter) between the CAD/CAM ceramic rod and the veneering ceramic. A composite resin (Filtek Z250) (control) was directly bonded to the veneering ceramic. All the bonded specimens were stored in water at 37°C for 24 h, and then half of them were additionally thermocycled prior to a TBS test. The CAD/CAM groups exhibited significantly higher TBS values and significantly higher or statistically similar Weibull moduli compared with those of the control group. Neither the TBS values nor the Weibull moduli were significantly altered by thermocycling. This study suggests that fractured veneers are more effectively repaired by CAD/CAM ceramic restorations and resin cement than direct intraoral repair in terms of TBS.",

keywords = "bond strength, CAD/CAM, ceramic repair, hydrofluoric acid, silane, Weibull analysis",

author = "Hwang, {Mae Hyun} and Kim, {Hae Ri} and Kwon, {Tae Yub}",

note = "Publisher Copyright: {\textcopyright} 2018, {\textcopyright} 2018 Informa UK Limited, trading as Taylor & Francis Group.",

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doi = "10.1080/10667857.2018.1495881",

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AU - Kim, Hae Ri

AU - Kwon, Tae Yub

PY - 2019/1/2

Y1 - 2019/1/2

N2 - The tensile bond strength (TBS) of four CAD/CAM ceramic blocks and one composite resin bonded to a veneering ceramic was evaluated. Prior to silanisation, the surfaces were etched with hydrofluoric acid. A resin cement was sandwiched (50 μm thickness/2.5 mm diameter) between the CAD/CAM ceramic rod and the veneering ceramic. A composite resin (Filtek Z250) (control) was directly bonded to the veneering ceramic. All the bonded specimens were stored in water at 37°C for 24 h, and then half of them were additionally thermocycled prior to a TBS test. The CAD/CAM groups exhibited significantly higher TBS values and significantly higher or statistically similar Weibull moduli compared with those of the control group. Neither the TBS values nor the Weibull moduli were significantly altered by thermocycling. This study suggests that fractured veneers are more effectively repaired by CAD/CAM ceramic restorations and resin cement than direct intraoral repair in terms of TBS.

AB - The tensile bond strength (TBS) of four CAD/CAM ceramic blocks and one composite resin bonded to a veneering ceramic was evaluated. Prior to silanisation, the surfaces were etched with hydrofluoric acid. A resin cement was sandwiched (50 μm thickness/2.5 mm diameter) between the CAD/CAM ceramic rod and the veneering ceramic. A composite resin (Filtek Z250) (control) was directly bonded to the veneering ceramic. All the bonded specimens were stored in water at 37°C for 24 h, and then half of them were additionally thermocycled prior to a TBS test. The CAD/CAM groups exhibited significantly higher TBS values and significantly higher or statistically similar Weibull moduli compared with those of the control group. Neither the TBS values nor the Weibull moduli were significantly altered by thermocycling. This study suggests that fractured veneers are more effectively repaired by CAD/CAM ceramic restorations and resin cement than direct intraoral repair in terms of TBS.

KW - bond strength

KW - CAD/CAM

KW - ceramic repair

KW - hydrofluoric acid

KW - silane

KW - Weibull analysis

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Repairing fractured ceramic veneer with CAD/CAM ceramic blocks: a preliminary tensile bond strength study

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