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Extended glaze firing on ceramics for hard machining: Crack healing, residual stresses, optical and microstructural aspects.陶瓷的扩展釉烧硬加工：裂纹愈合、残余应力、光学和微观结构方面。
Dent Mater. 2017 Feb;33(2):226-240. doi: 10.1016/j.dental.2016.12.002. Epub 2017 Jan 6.
3
An In Vitro Study on Effect of Ceramic Thickness and Multiple Firings on Colour of Metal Ceramic Restorations.陶瓷厚度和多次烧制对金属陶瓷修复体颜色影响的体外研究
J Indian Prosthodont Soc. 2014 Dec;14(Suppl 1):86-92. doi: 10.1007/s13191-014-0370-2. Epub 2014 Aug 17.
4
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5
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6
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8
Effect of various treatment and glazing (coating) techniques on the roughness and wettability of ceramic dental restorative surfaces.各种治疗和上釉（涂层）技术对牙科陶瓷修复体表面粗糙度和润湿性的影响。
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9
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实验室操作及多次上釉对金属烤瓷修复体颜色的影响

The Effect of Laboratory Procedures and Repeated-glazing on Color of Metal-ceramic Restoration.

作者信息

Özdemir Hatice, Duymus Zeynep Yesil

机构信息

Department of Prosthodontics, Faculty of Dentistry, Atatürk University, Erzurum, Turkey.

Department of Prosthodontics, Faculty of Dentistry, Recep Tayyip Erdogan University, Rize, Turkey.

出版信息

Contemp Clin Dent. 2019 Apr-Jun;10(2):239-242. doi: 10.4103/ccd.ccd_411_18.

DOI:10.4103/ccd.ccd_411_18
PMID:32308284
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7145238/
Abstract

BACKGROUND

Routine laboratory procedures and repeated glazed effect the final color of metal-ceramic restorations (MCRs). Clinicians wonder if the color changes after routine laboratory procedures and repeated glazed is clinically acceptable or not.

AIMS

The aim of this study was to determine the color changes of MCRs after routine laboratory procedures and then glazed for 1, 2, and 3 times.

MATERIALS AND METHODS

Forty-five disc-shaped (10-mm diameter and 1-mm thickness) specimens were fabricated from Cr-Co metal-alloy. Bonding agent, first and second layer of shade A opaque porcelain (OP) were applied on the metal specimens. The color of specimens was measured with a spectrophotometer after each procedure and △E, △E and △E values were calculated. Shade A feldspathic porcelain was applied (2-mm thickness) to all specimens. Glaze was applied on the porcelain for 1, 2, and 3 times and then, the color measured after each procedure and △E, △E, and △E values were calculated. Data were analyzed with one-way ANOVA and Duncan test ( < 0.05).

RESULTS

△E that was obtained between the first layer of OP and bonding agent showed the greatest value. △E that was obtained between the second and first layer of OP showed the lowest value. After repeated glazed procedures, the final color of the specimens was changed; but, these changes were clinically acceptable (△E < 5.5).

CONCLUSIONS

The routine laboratory procedures and glazed for 1,2, and 3 times is effect the color of MCRs; but, the color changes were clinically acceptable (△E < 5.5).

摘要

背景

常规实验室操作和反复上釉会影响金属烤瓷修复体（MCR）的最终颜色。临床医生想知道常规实验室操作和反复上釉后的颜色变化在临床上是否可接受。

目的

本研究的目的是确定MCR在常规实验室操作后，然后分别上釉1次、2次和3次后的颜色变化。

材料与方法

用Cr-Co合金制作45个圆盘形（直径10mm，厚度1mm）试件。在金属试件上涂覆粘结剂、A色第一层不透明瓷（OP）和第二层不透明瓷。每次操作后用分光光度计测量试件颜色，并计算△E、△E和△E值。对所有试件涂覆A色长石质瓷（厚度2mm）。在瓷体上分别上釉1次、2次和3次，然后每次操作后测量颜色，并计算△E、△E和△E值。数据采用单因素方差分析和邓肯检验（P<0.05）进行分析。

结果

OP第一层与粘结剂之间的△E值最大。OP第二层与第一层之间的△E值最小。反复上釉后，试件的最终颜色发生了变化；但这些变化在临床上是可接受的（△E<5.5）。

结论

常规实验室操作以及上釉1次、2次和3次会影响MCR的颜色；但颜色变化在临床上是可接受的（△E<5.5）。