Int J Stomatol

Int J Stomatol ›› 2021, Vol. 48 ›› Issue (2): 125-128.doi: 10.7518/gjkq.2021023

• Expert Forum •     Next Articles

My opinion on the generations of dental zirconia materials

Wan Qianbing()   

  1. State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Dept. of Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
  • Received:2020-08-06 Revised:2020-12-27 Online:2021-03-01 Published:2021-03-17
  • Contact: Qianbing Wan E-mail:champion@scu.edu.cn
  • Supported by:
    National Natural Science Foundation of China(81970984)

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Abstract:

Given their high biocompatibility and esthetic potential, zirconia materials are a suitable alternative to metal-based restorations for many indications within restorative dentistry. Zirconia frameworks are usually veneered with veneering ceramics, but the latter is easily broken from the former. Recent years have demonstrated a clear trend toward monolithic zirconia restorations in dental clinics. Because of the great number of options currently available, selection of the most suitable restorative zirconia materials in everyday clinical practice has become a complex and challenging task. Zirconia materials can be divided into four generations according to their mechanical and optical properties. This review describe the constituents, physical properties, and indications of the four types of available zirconia materials.

Key words: zirconia, generations, all-ceramics

CLC Number: 

  • R783.1

TrendMD: 

Tab 1

Generations of zirconia materials and their properties"

代别 第1代 第2代 第3代 第4代
主晶相 3Y-TZP 3Y-TZP 4Y-TZP 5Y-TZP
Al2O3含量/% 0.25 0.05 0.05 0.05
抗弯强度/MPa 1 000~1 500 900~1 300 500~800 500~600
断裂韧性/（MPa·m-2） 3.5~4.5 3.5~4.5 2.2~3.5 2.2~2.7
透光性TP值（1 mm厚度） 几乎不透光 15~20 30 35
俗称/简称 白色氧化锆 高强氧化锆 高透氧化锆 超透氧化锆
适应证 前牙、后牙多单位长桥支架,
前后牙单冠底冠		 后牙区的全氧化锆冠和桥,前牙区的全瓷冠底冠,前牙3单位或4单位桥支架 前牙全氧化锆单冠、桥,前牙贴面 前牙单冠、
贴面修复
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doi: 10.1177/0022034517737483 pmid: 29035694
[2] Güth JF, Stawarczyk B, Edelhoff D, et al. Zirconia and its novel compositions: what do clinicians need to know[J]. Quintessence Int, 2019,50(7):512-520.
pmid: 31187100
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