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The effect of adjustment and finishing procedure on roughness, strength, and phase transformation of monolithic zirconia

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info:eu-repo/semantics/closedAccess

Date

2022

Author

Öztürk, Işıl
Çağlar, İpek
Duymus, Zeynep Yeşil

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Ozturk, I., Caglar, I., & Duymus, Z. Y. (2022). The effect of adjustment and finishing procedure on roughness, strength, and phase transformation of monolithic zirconia. Clinical oral investigations, 26(7), 4761–4768. https://doi.org/10.1007/s00784-022-04440-x

Abstract

Objective To evaluate the effect of adjustment and finishing procedures and thermal aging of monolithic zirconia on the surface roughness, phase transformation, and flexural strength. Material and methods One hundred disk-shaped monolithic zirconia specimens were randomly divided into 5 groups: control, received only glazing; group Gr, was grinded; group GrP, was grinded and polished; group GrG, was grinded and re-glazed; group GrPG, was re-glazed after grinding and polishing. Half of the each group were stored in distilled water for 24 h and the remaining were thermocycled for 5000 cycles. Topographic evaluations were done with profilometer and scanning electron microscope. Phase changes were assessed through X-ray diffractometer. The biaxial flexural strength test was calculated by universal test machine. Statistical analysis was performed by using two-way ANOVA and Tukey multiple comparison test (p < 0.05). Results Group Gr showed statistically higher surface roughness and flexural strength values than the other groups (p < 0.001). However, no significant differences were observed between finishing groups (p >0.05). Phase transformation was occurred in all groups but the differences were not statically significant (p >0.05). Artificial aging had no effect on surface roughness, flexural strength, and phase transformation (p >0.05). Conclusion Surface roughness significantly increased after grinding, but finishing procedure approximated it to the control group. Glazing after grinding decreased the flexural strength, but polishing did not. Zirconia polishing system may be an alternative to re-glazing for monolithic zirconia.

Source

Clinical Oral Investigations

Volume

26

Issue

7

URI

https://doi.org/10.1007/s00784-022-04440-x
https://hdl.handle.net/11436/6960

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  • DŞHF, Klinik Bilimler Bölümü Koleksiyonu [254]
  • PubMed İndeksli Yayınlar Koleksiyonu [2443]
  • Scopus İndeksli Yayınlar Koleksiyonu [6032]
  • WoS İndeksli Yayınlar Koleksiyonu [5260]



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