Results 221 to 230 of about 4,298 (244)

Trueness and Precision of Economical Smartphone‐Based Virtual Facebow Records

Journal of Prosthodontics, 2021
AbstractPurposeTo investigate the trueness and precision of virtual facebow records using a smartphone as a three‐dimensional (3D) face scanner.Material and MethodsTwenty repeated virtual facebow records were performed on two subjects using a smartphone as a 3D face scanner.
Junying Li, Zhaozhao Chen, Ann M. Decker, Hom‐Lay Wang, Tim Joda, Gustavo Mendonca, Luca Lepidi   +6 more
openaire   +3 more sources

Trueness analysis of zirconia crowns fabricated with 3-dimensional printing

The Journal of Prosthetic Dentistry, 2019
The primary manufacturing method of zirconia ceramic crowns is computer-aided design and computer-aided manufacture (CAD-CAM), but a disadvantage of this technique is material waste. Three-dimensional (3D) printing, which has been recently introduced into dentistry, has improved the processing of polymers and metals, but not yet of ceramic crowns.The ...
Weina Wang, Hai Yu, Yifan Liu, Xinlei Jiang, Bo Gao   +4 more
openaire   +2 more sources

Understanding the meaning of accuracy, trueness and precision

Accreditation and Quality Assurance, 2006
Clear definitions of basic terms, used to describe the quality of measurements, is essential for communication among scientists as well as when reporting measurement results to clients. Even if appropriate definitions are given in international standards and guidelines, the understanding of some basic terms sometimes proves difficult.
Antonio Menditto, Marina Patriarca, Bertil Magnusson   +2 more
openaire   +1 more source

Study of trueness in CAD/CAM complete dentures

2022
Aim: to compare the trueness of 3D printed versus milled complete denture bases. Materials and methods: study used frasaco (Tettnang, Germany) edentulous model of the upper jaw which was duplicated using silicone duplicating material. Eight casts were poured with type 3 dental stone.
Dulčić, Nikša, Čimić, Samir
openaire  

Calibration, Specificity and Trueness of a Postheparin Plasma Lipoprotein Lipase Assay

Clinical Chemistry and Laboratory Medicine, 2001
Measurement of lipoprotein lipase activity in postheparin plasma is generally accompanied by moderate within-run variation CV(W-R) (
Henriksen, Finn L, Petersen, Per H, Beck-Nielsen, H., Hørder, Mogens   +3 more
openaire   +3 more sources

Performance of electrolyte measurements assessed by a trueness verification program

Clinical Chemistry and Laboratory Medicine (CCLM), 2016
AbstractIn this study, we analyzed frozen sera with known commutabilities for standardization of serum electrolyte measurements in China.Fresh frozen sera were sent to 187 clinical laboratories in China for measurement of four electrolytes (sodium, potassium, calcium, and magnesium). Target values were assigned by two reference laboratories. Precision (
Menglei, Ge, Haijian, Zhao, Ying, Yan, Tianjiao, Zhang, Jie, Zeng, Weiyan, Zhou, Yufei, Wang, Qinghui, Meng, Chuanbao, Zhang   +8 more
openaire   +2 more sources

Full‐Arch Digital Implant Impression Trueness: An in Vivo Study

Clinical Oral Implants Research
ABSTRACTObjectivesTo evaluate the trueness of maxillary and mandibular full‐arch implant digital impressions with and without additional reference objects.Material and MethodsSeventeen maxillary and 6 mandibular arches with four implants were randomly divided into a group with additional reference objects (wRO group, n = 12) and without them (woRO ...
Vygandas Rutkūnas, Daniel Kuleš, Marta Revilla‐León, Mykolas Akulauskas, Liudas Auškalnis, Ieva Gendvilienė   +5 more
openaire   +2 more sources

Estimation of trueness of measurement results obtained in external quality assessment

Clinical Chemistry and Laboratory Medicine, 2009
We demonstrated that lyophilised EQA/PT control materials, under certain circumstances, provide equal information about bias values as pools of native patient sera, and that in some cases, long-term reliable work with such materials is possible.Bias values, estimated from results of routine surveys of EQA SEKK (Czech Republic) programmes for eight ...
Bedrich, Friedecky, Josef, Kratochvila, Marek, Budina   +2 more
openaire   +2 more sources

Trueness of 3-dimensionally printed complete arch implant analog casts

The Journal of Prosthetic Dentistry
Although a completely digital workflow has numerous advantages, a physical definitive cast may be especially helpful for the accurate assembly of components of complex complete arch-fixed prostheses, the evaluation of esthetic and occlusion features, or prosthesis fabrication.
Andréa Gagnon-Audet, Hongseok An, Unnur Flemming Jensen, Manuel Bratos, John A. Sorensen   +4 more
openaire   +2 more sources

Assessment of trueness of glucose measurement instruments with different specimen matrices

Clinica Chimica Acta, 2005
The trueness of glucose monitors is commonly assessed using whole-blood samples and a clinical analyzer as a comparison method. In this study, the effect of specimen matrix on trueness of one clinical analyzer and one glucose monitor was compared with a gas chromatography-mass spectrometry (GC/MS) reference method, using split-sample comparison with ...
Hubert W, Vesper, Enada, Archibold, Gary L, Myers   +2 more
openaire   +2 more sources