Promoting porcelain–zirconia bonding using different atmospheric pressure gas plasmas

Yi Chuan Liu, Jung Pei Hsieh, Yung-Chung Chen, Li Li Kang, Chii-Shyang Hwang, Shu-Fen Chuang

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Objectives: To evaluate the effects of different atmospheric-pressure plasma (APP) on the physicochemical properties of yttria-stabilized zirconia, and promoting the adhesion of veneering porcelain. Methods: Cercon base zirconia disks were prepared to receive different treatments: as-polished, three APPs (oxygen, OP; argon, AP; and CF4, CP), and grit-blasted (GB). Their surface roughness and hydrophilicity were measured, and surface morphology was examined either after treatments, after simulated porcelain firing, or additional thermal etching. X-ray photoelectron spectroscopy (XPS) analysis characterized the surface chemical compositions. Shear bond strength (SBS) tests examined the adhesion between veneering porcelain and zirconia either before or after thermocycling. The layered ceramic disks were also sectioned to inspect the porcelain–zirconia interfaces. Statistical analysis was performed with one-way ANOVA and post hoc Duncan's test. Results: Grit-blasting caused surface damage and increased roughness. All APP-treated disks exhibited deeper grain boundaries and enlarged grain sizes after thermal etching, while CP disks revealed additional particle dispersions. Three APPs rendered the zirconia surface superhydrophilic. XPS spectra of three APP groups revealed increased hydroxyl groups and reduced C–C contents, and CP group especially showed the existence of Z–F bonds. CP exhibited the highest SBS both before and after thermocycling, while AP and GB also showed improved SBSs compared to the as-polished. OP presented reduced SBS, and its cross-sections showed increased microporosities in the veneering porcelain. Significance: APP did not change surface morphology but enhanced wettability. CP and AP improved porcelain–zirconia SBSs, primarily through surface hydroxylation. OP induced the microporosities in porcelain and adversely affected the adhesion.

Original languageEnglish
Pages (from-to)1188-1198
Number of pages11
JournalDental Materials
Volume34
Issue number8
DOIs
Publication statusPublished - 2018 Aug 1

Fingerprint

Plasma Gases
Dental Porcelain
Atmospheric Pressure
Porcelain
Atmospheric pressure
Shear Strength
Plasmas
Zirconia
Photoelectron Spectroscopy
Gases
Microporosity
Adhesion
Thermal cycling
Surface morphology
Etching
X ray photoelectron spectroscopy
Hot Temperature
Surface roughness
Wettability
Hydroxylation

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Dentistry(all)
  • Mechanics of Materials

Cite this

Liu, Yi Chuan ; Hsieh, Jung Pei ; Chen, Yung-Chung ; Kang, Li Li ; Hwang, Chii-Shyang ; Chuang, Shu-Fen. / Promoting porcelain–zirconia bonding using different atmospheric pressure gas plasmas. In: Dental Materials. 2018 ; Vol. 34, No. 8. pp. 1188-1198.
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abstract = "Objectives: To evaluate the effects of different atmospheric-pressure plasma (APP) on the physicochemical properties of yttria-stabilized zirconia, and promoting the adhesion of veneering porcelain. Methods: Cercon base zirconia disks were prepared to receive different treatments: as-polished, three APPs (oxygen, OP; argon, AP; and CF4, CP), and grit-blasted (GB). Their surface roughness and hydrophilicity were measured, and surface morphology was examined either after treatments, after simulated porcelain firing, or additional thermal etching. X-ray photoelectron spectroscopy (XPS) analysis characterized the surface chemical compositions. Shear bond strength (SBS) tests examined the adhesion between veneering porcelain and zirconia either before or after thermocycling. The layered ceramic disks were also sectioned to inspect the porcelain–zirconia interfaces. Statistical analysis was performed with one-way ANOVA and post hoc Duncan's test. Results: Grit-blasting caused surface damage and increased roughness. All APP-treated disks exhibited deeper grain boundaries and enlarged grain sizes after thermal etching, while CP disks revealed additional particle dispersions. Three APPs rendered the zirconia surface superhydrophilic. XPS spectra of three APP groups revealed increased hydroxyl groups and reduced C–C contents, and CP group especially showed the existence of Z–F bonds. CP exhibited the highest SBS both before and after thermocycling, while AP and GB also showed improved SBSs compared to the as-polished. OP presented reduced SBS, and its cross-sections showed increased microporosities in the veneering porcelain. Significance: APP did not change surface morphology but enhanced wettability. CP and AP improved porcelain–zirconia SBSs, primarily through surface hydroxylation. OP induced the microporosities in porcelain and adversely affected the adhesion.",
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Promoting porcelain–zirconia bonding using different atmospheric pressure gas plasmas. / Liu, Yi Chuan; Hsieh, Jung Pei; Chen, Yung-Chung; Kang, Li Li; Hwang, Chii-Shyang; Chuang, Shu-Fen.

In: Dental Materials, Vol. 34, No. 8, 01.08.2018, p. 1188-1198.

Research output: Contribution to journalArticle

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AU - Hsieh, Jung Pei

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