Fracture strength of various titanium-based, CAD-CAM and PFM implant crowns

被引:7
作者
DuVall, Nicholas B. [1 ,2 ]
DeReis, Stephen P. [3 ]
Vandewalle, Kraig S. [2 ,4 ]
机构
[1] 96th Dent Squadron, AEGD Residency, Eglin AFB, FL USA
[2] Uniformed Serv Univ Hlth Sci, US Air Force Postgrad Dent Coll, Bethesda, MD 20814 USA
[3] 81st Dent Squadron, Keesler AFB, MS USA
[4] 59th Dent Training Squadron, AEGD Residency, Joint Base San Antonio L, TX USA
关键词
abutment; CAD‐ CAM; cement‐ retained; implant restoration; screw‐ TiBase; LITHIUM DISILICATE; CLINICAL-OUTCOMES; SINGLE CROWNS; ABUTMENTS; PERFORMANCE; RECONSTRUCTIONS; COMPLICATIONS; RESTORATIONS; SURVIVAL; FAILURE;
D O I
10.1111/jerd.12672
中图分类号
R78 [口腔科学];
学科分类号
1003 ;
摘要
Objective CAD-CAM has dramatically advanced dental restorative procedures to include implant-supported crowns. The purpose of this study was to compare the fracture resistance following mechanical loading and thermocycling of various screw-retained and cement-retained ceramic and polymethylmethacrylate material combinations using the TiBase abutment compared to PFM implant-supported crowns. Overview Twelve implant restorations were fabricated for each of eight groups. Three groups were screw-retained and five groups were cement-retained implant restorations. The ceramic and polymethylmethacrylate restorations were fabricated on the TiBase abutment while the PFM restorations were fabricated on an UCLA abutment. Data were analyzed with a one way Analysis of Variance and Tukey's post-hoc test to evaluate the effect of abutment and crown type on fracture load (alpha = 0.05). A significant difference was found in the maximum fracture load between groups (P < 0.001). Conclusions The screw-retained implant restorations demonstrated higher fracture loads than their cement-retained counterparts. The TiBase abutment compared favorably to the UCLA abutment. Clinical Significance The TiBase abutment is a titanium insert which combines the esthetics of a ceramic abutment with the mechanical properties of a titanium abutment and should be considered a viable clinical alternative to the conventional implant-supported PFM crown based on theses in vitro results and in context of in vivo studies. The lithium disilicate hybrid abutment/crown implant-supported restoration utilizing the TiBase abutment may be an ideal clinical choice due to simplicity, single appointment CAD-CAM, and esthetics.
引用
收藏
页码:522 / 530
页数:9
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