Effect of different sintering procedures on marginal and internal fit, color, and fracture load of monolithic zirconia fixed partial prostheses.

IF 1.8 4区医学 Q2 DENTISTRY, ORAL SURGERY & MEDICINE

International Journal of Computerized Dentistry Pub Date : 2024-10-15 DOI:10.3290/j.ijcd.b5114621

Ravza Eraslan, Bahar Sayin Sahin, Haydar Albayrak, Mustafa Ayata, Ozan Temizkanli

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引用次数: 0

Abstract

Aim: The aim of the present in vitro study was to investigate the effects of different sintering procedures on the fit, color parameters, and fracture load of monolithic fixed partial prostheses (FPPs).

Materials and methods: A metal master model was scanned and FPPs were designed. Groups were created by fabricating FPPs using four different sintering procedures (n = 10): Prettau-Standard (PST); Prettau-Slow (PSL); Ice-Speed (ISP); Ice-Standard (IST). PST-PSL (Group P; N = 20) and ISP-IST (Group I; N = 20) were colored with different coloring liquids. The marginal and internal fit were measured using the silicone replica method. CIELAB values of the samples were measured using a spectrophotometer. Then, for each sample, the die was obtained from polymethyl methacrylate. The specimens were cemented into dies and tested in a universal testing machine for fracture load. One-way ANOVA was performed to assess the effect of the sintering procedure on the marginal and internal fit; fracture load; and ∆E00, ∆L', ∆C', and ∆H' values of the FPPs.

Results: The PSL and PST groups showed significantly smaller internal and marginal fit values compared with the ISP group. Additionally, the internal fit values of the IST group were significantly higher than those of Group P. Sintering time reduction led to a decrease in ∆E00 values. Fracture load values were not statistically significantly affected by the different sintering procedures for both brands.

Conclusion: Different sintering procedures did not have a clinically significant effect on fit and fracture load. Different sintering procedures were found to have an impact on the color change of monolithic zirconia restorations.

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不同烧结程序对整体氧化锆固定局部义齿边缘和内部密合度、颜色以及断裂负荷的影响

目的：本体外研究旨在探讨不同烧结程序对整体式固定局部义齿的密合度、颜色参数和断裂负荷的影响：扫描金属模型并设计固定部分修复体。使用四种不同的烧结程序（Prettau-Standard (PST)、Prettau-Slow (PSL)、Ice-Speed (IS)、Ice-Standard (IST)，n=10）制作固定部分义齿，并将其分为四组。PST-PSL（P 组，N=20）和 IS-IST（I 组，N=20）用不同的着色液着色。采用硅胶复型法测量边缘和内部配合度。使用分光光度计测量样品的 CIELAB 值。然后，用聚甲基丙烯酸甲酯为每个试样制作模具。将试样粘合到模具中，并在万能试验机上进行断裂载荷测试。进行单因素方差分析以评估烧结程序对固定部分义齿的边缘和内部密合度、断裂载荷、∆E00、∆L'、∆C'和∆H'值的影响：与 IS 组相比，PSL 组和 PST 组的内部密合度和边缘密合度明显较小。此外，IST 组的内部密合度值明显高于 Prettau 组。烧结时间的缩短导致了 ∆E00 值的下降。两种品牌的不同烧结程序对断裂载荷值没有明显的统计学影响：结论：不同的烧结程序对贴合度和断裂载荷没有明显的临床影响。结论：不同的烧结程序对密合度和断裂载荷没有明显的临床影响，但不同的烧结程序对整体氧化锆修复体的颜色变化有影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Computerized Dentistry Dentistry-Dentistry (miscellaneous)

CiteScore

2.90

自引率

0.00%

发文量

期刊介绍： This journal explores the myriad innovations in the emerging field of computerized dentistry and how to integrate them into clinical practice. The bulk of the journal is devoted to the science of computer-assisted dentistry, with research articles and clinical reports on all aspects of computer-based diagnostic and therapeutic applications, with special emphasis placed on CAD/CAM and image-processing systems. Articles also address the use of computer-based communication to support patient care, assess the quality of care, and enhance clinical decision making. The journal is presented in a bilingual format, with each issue offering three types of articles: science-based, application-based, and national society reports.