Randomized clinical trial of implant-supported ceramic-ceramic and metal-ceramic fixed dental prostheses: preliminary results.
Randomized clinical trial of implant-supported ceramic-ceramic and metal-ceramic fixed dental prostheses: preliminary results.
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DOI：
10.1111/jopr.12066
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发表时间：
2014-02
期刊：
影响因子：
--
通讯作者：
Anusavice KJ
中科院分区：
文献类型：
--
作者：
Esquivel-Upshaw JF;Clark AE;Shuster JJ;Anusavice KJ
本研究的目的是确定种植体支持的陶瓷-陶瓷和金属-陶瓷修复体随时间的存活率，作为核心-贴面厚度比、牙龈连接器开口设计和连接器高度的函数。 IRB 批准的随机对照临床试验是一项单盲试点研究，涉及 55 名患者，其中一个或两个后牙区缺失三颗牙齿。这些患者（34 名女性；21 名男性；年龄范围 52-75 岁）被招募参加该研究，接受 3 单元种植体支持的固定假牙 (FDP)。研究中的 72 名 FDP 中每人都植入了两个植入物。植入物（Osseospeed，Astra Tech）由钛制成，经过喷砂处理。将金色定制铣削钛基台（Atlantis，Astra Tech）固定到每个种植体本体上。 55 名患者的 72 个 FDP 均根据以下选项之一进行随机分配： (1) A. 材料：陶瓷-陶瓷（氧化钇稳定氧化锆芯、可压制氟磷灰石玻璃陶瓷、IPS e.max ZirCAD 和 ZirPress、Ivoclar Vivadent） B. 金属陶瓷（钯基贵合金、Capricorn、Ivoclar Vivadent，带压制）白榴石增强微晶玻璃贴面、IPS InLine POM、Ivoclar Vivadent）； (2) 咬合贴面厚度（0.5、1.0 和 1.5 毫米）； (3) 龈沟曲率（直径0.25、0.5、0.75毫米）； (4) 连接器高度（3、4 和 5 毫米）。 FDP 是用双固化树脂水泥（RelyX、Universal Cement、3M ESPE）制造和粘合的。患者在 6 个月、1 年和 2 年时被召回。检查 FDP 的裂纹、断裂和一般表面质量。对 72 个假肢的回忆检查显示，有 10 处存在碎裂性骨折。连接器或发射孔区域内没有发生断裂。两侧 Fisher 精确检验显示骨折与材料系统类型 (p = 0.51)、贴面厚度 (p = 0.75)、牙龈凹口曲率半径 (p = 0.68) 和连接器高度 (p = 0.91) 之间没有显着相关性。尽管连接器高度、牙龈间隙曲率、芯/贴面厚度比和材料系统与以氧化锆为芯材料的种植体支持的 FDP 的存活概率之间没有显着相关性，但少量的骨折排除了对主要控制因素的明确结论。
The aim of this study was to determine the survival rates over time of implant-supported ceramic-ceramic and metal-ceramic prostheses as a function of core-veneer thickness ratio, gingival connector embrasure design, and connector height. An IRB-approved, randomized, controlled clinical trial was conducted as a single-blind pilot study involving 55 patients missing three teeth in either one or two posterior areas. These patients (34 women; 21 men; age range 52–75 years) were recruited for the study to receive a 3-unit implant-supported fixed dental prosthesis (FDP). Two implants were placed for each of the 72 FDPs in the study. The implants (Osseospeed, Astra Tech), which were made of titanium, were grit blasted. A gold-shaded, custom-milled titanium abutment (Atlantis, Astra Tech), was secured to each implant body. Each of the 72 FDPs in 55 patients were randomly assigned based on one of the following options: (1) A. Material: ceramic-ceramic (Yttria-stabilized zirconia core, pressable fluorapatite glass-ceramic, IPS e.max ZirCAD and ZirPress, Ivoclar Vivadent) B. metal-ceramic (palladium-based noble alloy, Capricorn, Ivoclar Vivadent, with press-on leucite-reinforced glass-ceramic veneer, IPS InLine POM, Ivoclar Vivadent); (2) occlusal veneer thickness (0.5, 1.0, and 1.5 mm); (3) curvature of gingival embrasure (0.25, 0.5, and 0.75 mm diameter); and (4) connector height (3, 4, and 5 mm). FDPs were fabricated and cemented with dual-cure resin cement (RelyX, Universal Cement, 3M ESPE). Patients were recalled at 6 months, 1 year, and 2 years. FDPs were examined for cracks, fracture, and general surface quality. Recall exams of 72 prostheses revealed 10 chipping fractures. No fractures occurred within the connector or embrasure areas. Two-sided Fisher’s exact tests showed no significant correlation between fractures and type of material system (p = 0.51), veneer thickness (p = 0.75), radius of curvature of gingival embrasure (p = 0.68), and connector height (p = 0.91). Although there were no significant associations between connector height, curvature of gingival embrasure, core/veneer thickness ratio, and material system and the survival probability of implant-supported FDPs with zirconia as a core material, the small number of fractures precludes a definitive conclusion on the dominant controlling factor.
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影响因子：
4.6
作者：
GIORDANO, RA;PELLETIER, L;POBER, R
通讯作者：
POBER, R
影响因子：
7.6
作者：
Oh, W;Götzen, N;Anusavice, KJ
通讯作者：
Anusavice, KJ
DOI：
10.1002/jbm.820230105
发表时间：
1989-01-01
期刊：
JOURNAL OF BIOMEDICAL MATERIALS RESEARCH
影响因子：
--
作者：
CHRISTEL, P;MEUNIER, A;PEILLE, CN
通讯作者：
PEILLE, CN
影响因子：
2.9
作者：
Larsson, C.;Holm, L.;von Steyern, P. Vult
通讯作者：
von Steyern, P. Vult
影响因子：
2.1
作者：
Guazzato, M.;Walton, T. R.;Klineberg, I.
通讯作者：
Klineberg, I.