中国组织工程研究

中国组织工程研究 ›› 2021, Vol. 25 ›› Issue (34): 5427-5431.doi: 10.12307/2021.234

• 组织工程口腔材料 tissue-engineered oral materials • 上一篇    下一篇

不同配方新型牙用玻璃陶瓷的显微结构与力学性能

任世鹏1，陈新民2，青  松1，喻  洁1，杨  婷1，唐婉容1   

  1. 1川北医学院附属医院口腔科，四川省南充市   637000；2四川大学华西口腔医院修复科，四川省成都市   610000
  • 收稿日期:2020-06-09 修回日期:2020-06-13 接受日期:2020-09-05 出版日期:2021-12-08 发布日期:2021-07-28
  • 通讯作者: 唐婉容，硕士，副主任医师，川北医学院附属医院口腔科，四川省南充市 637000
  • 作者简介:任世鹏，男，1980年生，四川省南充市人，汉族，硕士，主治医师，主要从事口腔修复学研究
  • 基金资助:
    南充市校合作课题(19SXHZ0350)，项目负责人：唐婉容；川北医学院校级科研课题(CBY17-A-YB48)，项目负责人：喻洁

Microstructure and mechanical properties of the new dental glass ceramics with different formulations

Ren Shipeng1, Chen Xinmin2, Qing Song1, Yu Jie1, Yang Ting1, Tang Wanrong1   

  1. 1Department of Stomatology, Affiliated Hospital of North Sichuan Medical College, Nanchong 637000, Sichuan Province, China; 2Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610000, Sichuan Province, China
  • Received:2020-06-09 Revised:2020-06-13 Accepted:2020-09-05 Online:2021-12-08 Published:2021-07-28
  • Contact: Tang Wanrong, Master, Associate chief physician, Department of Stomatology, Affiliated Hospital of North Sichuan Medical College, Nanchong 637000, Sichuan Province, China
  • About author:Ren Shipeng, Master, Attending physician, Department of Stomatology, Affiliated Hospital of North Sichuan Medical College, Nanchong 637000, Sichuan Province, China
  • Supported by:
    the Nanchong City School Cooperation Project, No. 19SXHZ0350 (to TWR); the North Sichuan Medical College-Level Scientific Research Project, No. CBY17-A-YB48 (to YJ)

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摘要：

文题释义：
玻璃陶瓷：玻璃是一种具有无规则结构的非晶态固体，或称玻璃态物质，而玻璃陶瓷又称微晶玻璃，是将特定组成的基础玻璃在加热过程中通过控制晶化而制成的一类大量含微晶相和玻璃相的多晶固体材料。
二硅酸锂：是金属锂与硅酸根结合形成的化合物。二硅酸锂晶体本身具有高强、高韧性能，使得二硅酸锂微晶玻璃是生物陶瓷中机械性能和生物性能都比较突出的一类陶瓷材料。
背景：通过调整基础玻璃的成分和工艺制度可以得到各种符合预定性能的微晶玻璃。
目的：通过不同配方制取以二硅酸锂为主晶相的玻璃陶瓷，晶化后对其力学性能和显微结构进行测定。
方法：以二硅酸锂为主晶相，通过熔融法制备不同配方的G1、G2、G3号玻璃胚体，打磨、抛光，相对面互相平行。将G1、G2、G3号玻璃胚体进行晶化热处理(以10 ℃/min升温至606 ℃保温30 min，继续升温至880 ℃保温30 min)，打磨、抛光、干燥，以未晶化热处理的G1号玻璃胚体为空白对照。测定各组玻璃陶瓷的弯曲强度、弹性模量、努普硬度及显微结构。
结果与结论：①G1、G2、G3号玻璃陶瓷的弯曲强度和弹性模量均高于空白对照组(P < 0.05)，G1、G2、G3号玻璃陶瓷的弯曲强度和弹性模量比较差异均无显著性意义(P > 0.05)；②G1、G2、G3号玻璃陶瓷的努普硬度均高于空白对照组(P < 0.05)，G1、G2、G3号玻璃陶瓷的努普硬度比较差异均无显著性意义(P > 0.05)；③扫描电镜显示，G1、G2、G3号玻璃陶瓷的主晶相均为二硅酸锂，但配方的改变导致其微观结构出现差异，G1、G3号玻璃陶瓷的显微结构相似，晶体形态为棒状，大小均匀，晶体含量较高；G2号玻璃陶瓷晶体形态呈片状，大小不均匀，晶体含量较高；④结果表明，该新型玻璃陶瓷的力学性能与IPS e.max Press接近，是一种有开发前景的修复材料。
https://orcid.org/0000-0002-4053-4299 (任世鹏) 

关键词: 材料, 玻璃陶瓷, 二硅酸锂, 玻璃胚体, 晶化, 机械性能, 显微结构

Abstract: BACKGROUND: Through adjusting the base glass elements and process system, glass-ceramic with specific features can be expected to obtain. 
OBJECTIVE: To prepare a self-formulated lithium disilicate glass-ceramic, and determine their mechanical properties and microstructures after crystallization. 
METHODS: Using lithium disilicate as the basic composition of glass, G1, G2, and G3 glass base bodies were fabricated with different formulations by melting method. After burnishing and polishing, relative surface was kept parallel. The glass base bodies of No. G1, G2, and G3 were prepared by crystallization heat treatment (increase the temperature to 606 °C for 30 minutes, then 880 °C in speed of 10 °C/min as keeping the temperature for 30 minutes). The glass was burnished, polished, and dried. The glass base body of No. G1 without crystallization heat treatment was set as blank control. The bending strength, elastic modulus, Knoop hardness and microstructure of each group of glass-ceramic were measured in each group. 
RESULTS AND CONCLUSION: (1) The bending strength and elastic modulus of G1, G2, and G3 glass ceramics were significantly higher than those of blank control group (P < 0.05), and there was no significant difference in bending strength and elastic modulus of G1, G2, and G3 glass ceramics (P > 0.05). (2) The Knoop hardness of G1, G2, and G3 glass ceramics was significantly higher than that of blank control group (P < 0.05), and there was no significant difference in Knoop hardness of G1, G2, and G3 glass ceramics (P > 0.05). (3) The results of scanning electron microscopy showed that the main crystal phase of G1, G2, and G3 glass ceramics was lithium disilicate, but the microstructures of those glass ceramics were changed by adjusting the processing formula. G1 and G3 glass ceramics have similar microstructure. The crystalline forms of the samples were rodlike crystals with uniform size and high crystal content. The crystalline form of G2 was flakes, inhomogeneous in size, and high in crystal content. (4) The results showed that the mechanic performance of this new type of glass-ceramic is close to IPS e.max Press, and it is a repair material with promising future.

Key words: material, glass-cerami, lithium disilicate, glass embryo body, crystallization, mechanic performance, microstructure

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