Conventional and electric field-assisted ion exchange on glass-ceramics for dental applications

被引：16

作者：

Alzahrani, Ali S. ^{[1
]}

Pintori, Giovanna ^{[2
]}

Sglavo, Vincenzo M. ^{[2
,3
]}

机构：

[1] Taif Univ, Coll Dent, Dept Basic Oral Med & Allied Dent Sci, POB 11099, At Taif 21944, Saudi Arabia

[2] Univ Trento, Dept Ind Engn, Via Sommarive 9, I-38123 Trento, Italy

[3] INSTM, Trento Res Unit, Via G Giusti 9, I-50151 Florence, Italy

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2021年 / 41卷 / 10期

关键词：

Dental nepheline; Ion exchange; Electrical field-assisted; Glass-ceramics; Crystallisation; STRENGTH; FRACTURE; SURFACE;

D O I：

10.1016/j.jeurceramsoc.2021.04.013

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Ion exchange can be used to mechanically reinforce dental glass-ceramics to reduce the problems associated to the flaws created upon various processing steps and handling. This work introduces a novel ion exchange method to the field of dental glass-ceramic to increase the possibilities of preparing highly reliable glass-ceramic restorations. The aim of the study was to compare Electric Field-Assisted Ion Exchange with conventional method, for newly developed nepheline based dental glass-ceramic. Multicomponent glass system was synthesized using melt-quench method and then prepared into glass-ceramic specimens via powder sinter-crystallisation route. The prepared glass-ceramic specimens were tested for bi-axial flexural strength before and after ion exchange according to the dental ceramics ISO 6872:2015. Ion exchange process was carried out in molten potassium nitride and the potassium penetration depth determined by EDXS was found greater and occurring in a matter of minutes within the nepheline crystal structure during electrical field assisted ion exchange compared with several hours of conventional treatment. The newly developed nepheline glass-ceramic system and the results achieved by electrical field assisted ion exchange may renew the ion exchange concept for dental application.

引用

页码：5341 / 5348

页数：8

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