钛基和钛基基支撑的CAD/CAM整体氧化锆冠的抗断裂性能:咀嚼模拟和热循环老化的影响。

IF 1.7 4区 医学 Q3 DENTISTRY, ORAL SURGERY & MEDICINE
Ayşe Yavuz, Emine Begüm Büyükerkmen
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引用次数: 1

摘要

目的:评价模拟咀嚼和热循环老化对钛基基基CAD/CAM单片氧化锆冠抗断裂性能的影响。材料与方法:两种种植基牙组:钛(Ti)和钛基(Ti-base;Medentika)则使用。制作40个下颌第一磨牙CAD/CAM单片氧化锆冠(Vita YZ T),用Panavia V5粘接在基牙上。每个基台组分为2个亚组(n = 10)。Ti组和Ti基组承受单一载荷直至断裂,Ti/CT组和Ti基/CT组(CT:咀嚼模拟和热循环老化)进行咀嚼模拟(1.2 × 106次× 50 N载荷,1.4 Hz)和热循环老化(3,911次/5°C至55°C)。采用万能试验机(1 mm/min)测试冠的抗断裂能力。采用Shapiro-Wilk检验和单因素方差分析进行统计学分析(P = 0.05)。结果:两组大鼠模拟咀嚼和热循环老化后成活率均为100%。各组骨折阻力值(mean±SD)分别为:Ti = 1,718.18±331.06 N, Ti-base = 1,713.53±233.24 N, Ti/CT = 1,664.82±188.62 N, Ti-base/CT = 1,551.28±344.79 N。单因素方差分析结果显示,四组间差异无统计学意义(P = 0.526)。结论:采用钛基或钛基牙支持的CAD/CAM整体氧化锆冠治疗后牙缺牙具有足够的抗折性。然而,需要更多的体外和临床研究来评估钛基基牙和CAD/CAM氧化锆冠的长期性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Fracture Resistance of CAD/CAM Monolithic Zirconia Crowns Supported by Titanium and Ti-Base Abutments: The Effect of Chewing Simulation and Thermocyclic Aging.

Purpose: To evaluate the effect of chewing simulation and thermocyclic aging on the fracture resistance of CAD/CAM monolithic zirconia crowns supported by titanium and Ti-base abutments. Materials and Methods: Two implant abutment groups-titanium (Ti) and titanium base (Ti-base; Medentika)-were used. A total of 40 mandibular first molar CAD/CAM monolithic zirconia crowns (Vita YZ T) were fabricated, then cemented onto the abutments with Panavia V5. Each abutment group was divided into two subgroups (n = 10). The Ti and Ti-base groups were subjected to a single load until fracture, and the Ti/CT and Ti-base/CT groups (CT: chewing simulation and thermocyclic aging) underwent chewing simulation (1.2 × 106 cycles × 50 N load, 1.4 Hz) and thermocylic aging (3,911 cycles/5°C to 55°C). The fracture resistances of the crowns were tested with a universal testing machine (1 mm/minute). Shapiro-Wilk and one-way ANOVA test were used for statistical analysis (P = .05). Results: The survival rates after chewing simulation and thermocyclic aging were 100% for both CT groups. The fracture resistance values (mean ± SD) of the groups were as follows: Ti = 1,718.18 ± 331.06 N, Ti-base = 1,713.53 ± 233.24 N, Ti/CT = 1,664.82 ± 188.62 N, and Ti-base/CT = 1,551.28 ± 344.79 N. According to one-way ANOVA test results, there was no statistically significant difference between the four groups (P = .526). Conclusion: CAD/CAM monolithic zirconia crowns supported by Ti-base or titanium abutments were found to have sufficient fracture resistance in the treatment of an absent single posterior tooth. However, more in vitro and clinical studies are required to evaluate the long-term performance of Ti-base abutments and CAD/CAM zirconia crowns.

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来源期刊
CiteScore
3.30
自引率
5.00%
发文量
115
审稿时长
6 months
期刊介绍: Edited by Steven E. Eckert, DDS, MS ISSN (Print): 0882-2786 ISSN (Online): 1942-4434 This highly regarded, often-cited journal integrates clinical and scientific data to improve methods and results of oral and maxillofacial implant therapy. It presents pioneering research, technology, clinical applications, reviews of the literature, seminal studies, emerging technology, position papers, and consensus studies, as well as the many clinical and therapeutic innovations that ensue as a result of these efforts. The editorial board is composed of recognized opinion leaders in their respective areas of expertise and reflects the international reach of the journal. Under their leadership, JOMI maintains its strong scientific integrity while expanding its influence within the field of implant dentistry. JOMI’s popular regular feature "Thematic Abstract Review" presents a review of abstracts of recently published articles on a specific topical area of interest each issue.
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