Topographical and crystalline change on surface by sandblasting improve flexural and shear bond strength of niobia-modified yttria-stabilized tetragonal zirconia polycrystal.

IF 1.9 4区 医学 Q2 DENTISTRY, ORAL SURGERY & MEDICINE
Dental materials journal Pub Date : 2024-03-29 Epub Date: 2024-02-29 DOI:10.4012/dmj.2023-225
Ha-Young Kim, Jun-Ho Cho, Hyung-In Yoon, Jae-Hyun Lee, Sunyoung Choi, Jung-Suk Han, In-Sung Luke Yeo
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Abstract

This study aimed to investigate the effects of sandblasting on the physical properties and bond strength of two types of translucent zirconia: niobium-oxide-containing yttria-stabilized tetragonal zirconia polycrystals ((Y, Nb)-TZP) and 5 mol% yttria-partially stabilized zirconia (5Y-PSZ). Fully sintered disc specimens were either sandblasted with 125 µm alumina particles or left as-sintered. Surface roughness, crystal phase compositions, and surface morphology were explored. Biaxial flexural strength (n=10) and shear bond strength (SBS) (n=12) were evaluated, including thermocycling conditions. Results indicated a decrease in flexural strength of 5Y-PSZ from 601 to 303 MPa upon sandblasting, while (Y, Nb)-TZP improved from 458 to 544 MPa. Both materials significantly increased SBS after sandblasting (p<0.001). After thermocycling, (Y, Nb)-TZP maintained superior SBS (14.3 MPa) compared to 5Y-PSZ (11.3 MPa) (p<0.001). The study concludes that (Y, Nb)-TZP is preferable for sandblasting applications, particularly for achieving durable bonding without compromising flexural strength.

通过喷砂改变表面的地形和结晶,提高铌改性钇稳定四方氧化锆多晶的抗弯和抗剪粘结强度。
本研究旨在探讨喷砂对两种半透明氧化锆(含氧化铌的钇稳定四方氧化锆多晶体((Y, Nb)-TZP)和 5 mol% 钇部分稳定氧化锆(5Y-PSZ))的物理性质和结合强度的影响。完全烧结的圆盘试样或用 125 µm 氧化铝颗粒喷砂,或保持原烧结状态。对表面粗糙度、晶相组成和表面形态进行了研究。评估了双轴抗弯强度(10 个)和剪切结合强度(12 个),包括热循环条件。结果表明,喷砂后,5Y-PSZ 的抗弯强度从 601 兆帕下降到 303 兆帕,而(Y,Nb)-TZP 则从 458 兆帕提高到 544 兆帕。两种材料在喷砂后的 SBS 都明显增加(p
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来源期刊
Dental materials journal
Dental materials journal 医学-材料科学:生物材料
CiteScore
4.60
自引率
4.00%
发文量
102
审稿时长
3 months
期刊介绍: Dental Materials Journal is a peer review journal published by the Japanese Society for Dental Materials and Devises aiming to introduce the progress of the basic and applied sciences in dental materials and biomaterials. The dental materials-related clinical science and instrumental technologies are also within the scope of this journal. The materials dealt include synthetic polymers, ceramics, metals and tissue-derived biomaterials. Forefront dental materials and biomaterials used in developing filed, such as tissue engineering, bioengineering and artificial intelligence, are positively considered for the review as well. Recent acceptance rate of the submitted manuscript in the journal is around 30%.
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