The Comparison of Fracture Resistance between Low Translucent and Ultra-High Translucent Monolithic Zirconia Crown

Abstract

Objective From the beginning of its discovery, the monolithic zirconia crown was highlighted for its remarkable strength; therefore, only available in opaque color. During the past decade, the translucent monolithic zirconia crown was manufactured to meet the aesthetic and restoration demand but was thought to be the cause of decreasing its strength. This study aimed to compare the fracture resistance between two types of translucent monolithic zirconia crowns, that is, low translucent monolithic zirconia (LT) and ultra-high translucent monolithic zirconia (UHT).

Material and Methods The premolar crown model was prepared using a computer-aided design/computer-aided manufacturing system, producing 1 mm of thickness. Ten crown samples were divided into LT and UHT. Then, each sample was measured for its fracture resistance using Universal Testing Machine until a fracture occurred. The differences in fracture resistance were analyzed using an independent t-test with p < 0.05.

Result The LT showed a higher fracture resistance than UHT (p < 0.05).

Conclusion The LT monolithic zirconia crown has strength and can be used for posterior crown restoration.

Keywords

fracture resistance - low translucent - monolithic zirconia - ultra-high translucent - restoration

Ethical Approval

Not required – the study did not involve human subjects.

Publication History

Article published online:
13 December 2023

• References

• 1 Finck NS, Paiva Jda M, Werneck RD, Freitas MIM, Guimarães PS. Próteses parciais fixas metal free em região posterior – revisão da literatura considerando a longevidade, material cerâmico usado e principais falhas. Full Dentist Sci 2021; 12 (47) 113-125
• 2 Silva NRFA, Sailer I, Zhang Y. et al. Performance of zirconia for dental healthcare. Materials (Basel) 2010; 3 (02) 863-896
• 3 Nordahl N, Vult von Steyern P, Larsson C. Fracture strength of ceramic monolithic crown systems of different thickness. J Oral Sci 2015; 57 (03) 255-261
• 4 Maziero Volpato CA, Altoe Garbelotto LGD, Celso M, Bondioli F. . Application of zirconia in dentistry: biological, mechanical and optical considerations. In: Advances in Ceramics - Electric and Magnetic Ceramics, Bioceramics, Ceramics and Environment [Internet]. InTech; 2011. Accessed February 14, 2023, at: http://www.intechopen.com/books/advances-in-ceramics-electric-and-magnetic-ceramics-bioceramics-ceramics-and-environment/application-of-zirconia-in-dentistry-biological-mechanical-and-optical-considerations
• 5 Kurtulmus-Yilmaz S, Ulusoy M. Comparison of the translucency of shaded zirconia all-ceramic systems. J Adv Prosthodont 2014; 6 (05) 415-422
• 6 Pekkan G, Pekkan K, Bayindir BÇ, Özcan M, Karasu B. Factors affecting the translucency of monolithic zirconia ceramics: a review from materials science perspective. Dent Mater J 2020; 39 (01) 1-8
• 7 Malkondu Ö, Tinastepe N, Akan E, Kazazoğlu E. An overview of monolithic zirconia in dentistry. Biotechnol Biotechnol Equip 2016; 30 (04) 644-652
• 8 Madfa AA, Al-Sanabani FA, Al-Qudami NH, Al-Sanabani JS, Amran AG. Use of zirconia in dentistry: an overview. Open Biomat J 2014; 5 (01) 1-7
• 9 Choi YS, Kim SH, Lee JB, Han JS, Yeo IS. In vitro evaluation of fracture strength of zirconia restoration veneered with various ceramic materials. J Adv Prosthodont 2012; 4 (03) 162-169
• 10 Nakamura K, Mouhat M, Nergård JM. et al. Effect of cements on fracture resistance of monolithic zirconia crowns. Acta Biomater Odontol Scand 2016; 2 (01) 12-19
• 11 Kontonasaki E, Giasimakopoulos P, Rigos AE. Strength and aging resistance of monolithic zirconia: an update to current knowledge. Jpn Dent Sci Rev 2020; 56 (01) 1-23
• 12 Kwon SJ, Lawson NC, McLaren EE, Nejat AH, Burgess JO. Comparison of the mechanical properties of translucent zirconia and lithium disilicate. J Prosthet Dent 2018; 120 (01) 132-137
• 13 Kolakarnprasert N, Kaizer MR, Kim DK, Zhang Y. New multi-layered zirconias: composition, microstructure and translucency. Dent Mater 2019; 35 (05) 797-806
• 14 Alkatheeri M, Altahtam AA, Abukhalaf A, Almaslokhi T, Almusalam A, Almohareb T. Translucency of recently introduced extra high translucency zirconia. J Res Med Dent Sci 2020; 8 (01) 175-180
• 15 Almansour HM, Alqahtani F. The effect of in vitro aging and fatigue on the flexural strength of monolithic high-translucency zirconia restorations. J Contemp Dent Pract 2018; 19 (07) 867-873
• 16 Johansson C, Kmet G, Rivera J, Larsson C, Vult Von Steyern P. Fracture strength of monolithic all-ceramic crowns made of high translucent yttrium oxide-stabilized zirconium dioxide compared to porcelain-veneered crowns and lithium disilicate crowns. Acta Odontol Scand 2014; 72 (02) 145-153
• 17 Jung YS, Lee JW, Choi YJ, Ahn JS, Shin SW, Huh JB. A study on the in-vitro wear of the natural tooth structure by opposing zirconia or dental porcelain. J Adv Prosthodont 2010; 2 (03) 111-115
• 18 Lameira DP, Buarque e Silva WA, Andrade e Silva F, De Souza GM. Fracture strength of aged monolithic and bilayer zirconia-based crowns. BioMed Res Int 2015; 2015: 418641
• 19 Komine F, Blatz MB, Matsumura H. Current status of zirconia-based fixed restorations. J Oral Sci 2010; 52 (04) 531-539
• 20 Subaşı MG, Demir N, Kara Ö, Ozturk AN, Özel F. Mechanical properties of zirconia after different surface treatments and repeated firings. J Adv Prosthodont 2014; 6 (06) 462-467
• 21 Vanlıoğlu BA, Kulak-Özkan Y. Minimally invasive veneers: current state of the art. Clin Cosmet Investig Dent 2014; 6: 101-107
• 22 Al-Juaila E, Osman E, Segaan L, Shrebaty M, Farghaly EA. Comparison of translucency for different thicknesses of recent types of esthetic zirconia ceramics versus conventional ceramics … (in vitro study). Future Dental J 2018; 4 (02) 297-301
• 23 Mao L, Kaizer MR, Zhao M, Guo B, Song YF, Zhang Y. Graded ultra-translucent zirconia (5Y-PSZ) for strength and functionalities. J Dent Res 2018; 97 (11) 1222-1228
• 24 Abdelbary O, Wahsh M, Sherif A, Salah T. Effect of accelerated aging on translucency of monolithic zirconia. Future Dental J 2016; 2 (02) 65-69
• 25 Wang CJ, Huang CY, Wu YC. Two-step sintering of fine alumina–zirconia ceramics. Ceram Int 2009; 35 (04) 1467-1472