Scopus
🔓 Açık Erişim YÖKSİS Eşleşti
Mechanical properties of zirconia after different surface treatments and repeated firings
Journal of Advanced Prosthodontics · Ocak 2014
YÖKSİS Kayıtları
Mechanical properties of zirconia after different surface treatments and repeated firings
The Journal of Advanced Prosthodontics · 2014 SCI-Expanded
PROFESÖR NECLA DEMİR →
Makale Bilgileri
DergiJournal of Advanced Prosthodontics
Yayın TarihiOcak 2014
Cilt / Sayfa6 · 462-467
Scopus ID2-s2.0-84920025460
Erişim🔓 Açık Erişim
Özet
Purpose. This study investigated the influence of surface conditioning procedures and repeated firings on monoclinic content and strength of zirconia before cementation. MATERIALS AND METHODS. Sintered barshaped zirconia specimens were subjected to no surface treatment (control), air abrasion, or grinding (n=21). Their roughness was evaluated using a profilometer, and microscope analysis was performed on one specimen of each group. Then, 2 or 10 repeated firings (n=10) were executed, the monoclinic content of specimens was analyzed by X-ray diffraction, and a three-point flexural strength test was performed. Surface roughness values were compared using one-way analysis of variance (ANOVA) and Tukey honestly significant difference (HSD) tests, the monoclinic content values were tested using Kruskal-Wallis and Mann-Whitney U tests, and the flexural strength values were tested using two-way ANOVA and Tukey HSD tests (P=.05). Spearman's correlation test was performed to define relationships among measured parameters. Results. Surface-treated specimens were rougher than untreated specimens and had a higher monoclinic content (P < .005), and the relationship between roughness and monoclinic content was significant (P < .000). Neither surface treatment nor firing significantly affected the flexural strength, but Weibull analysis showed that for the air-abraded samples the characteristic strength was significantly lower after the 10th firing than after the 2nd firing. Conclusion. After firing, a negligible amount of monoclinic content remained on the zirconia surfaces, and rougher surfaces had higher monoclinic contents than untreated surfaces. Multiple firings could be performed if necessary, but the fracture probability could increase after multiple firings for rougher surfaces.
Yazarlar (5)
1
Meryem Gülce Subaşı
2
Necla Demir
ORCID: 0000-0003-0927-6962
3
Özlem Kara
4
A. Nilgun Ozturk
5
Faruk Ozel
ORCID: 0000-0002-3689-0469
Anahtar Kelimeler
Ceramics
Flexural strength
Surface treatment
X-ray diffraction
Zirconium oxide
Kurumlar
Bezmiâlem Vakıf Üniversitesi
Istanbul Turkey
İstanbul Aydın Üniversitesi
Istanbul Turkey
Selçuk Üniversitesi
Selçuklu Turkey
Metrikler
51
Atıf
5
Yazar
5
Anahtar Kelime