Results 211 to 220 of about 4,572 (256)
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Accuracy of Dynamic Virtual Articulation: Trueness and Precision
Journal of Prosthodontics, 2019AbstractPurposeTo study the effects of altering condylar settings and pin openings on the trueness and precision of virtual articulators vs. mechanical articulators.Materials and MethodsMaxillary and mandibular typodonts with fiducial markers were mounted on a mechanical Artex‐CR articulator, and the mandibular teeth were prepared to allow guidance ...
Michael R, Hsu +3 more
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Effect of Milling Protocols on Trueness and Precision of Ceramic Crowns
Journal of Prosthodontics, 2020AbstractPurposeTo investigate the effect of different milling protocols for different ceramic materials on the trueness and precision of milled ceramic crowns.Materials and MethodsA definitive impression from a patient requiring a ceramic crown was used to fabricate forty glass ceramic crowns (VITABLOCS mark II, Vita Zahnfabrik) milled with wet, hard ...
Khaled Q. Al Hamad +3 more
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The effect of software updates on the trueness and precision of intraoral scanners.
Quintessence international (Berlin, Germany : 1985), 2021The goal of the study was to determine the effects of software updates on the trueness and precision of digital impressions obtained with a variety of intraoral scanner (IOS) systems.Seven IOS systems were investigated. Each system was tested using two versions of software, with the second version being the latest at the time of conducting the study ...
Vág, János +6 more
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Understanding the meaning of accuracy, trueness and precision
Accreditation and Quality Assurance, 2006Clear 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 +2 more
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Evaluating the Effect of Ambient and Scanning Lights on the Trueness of the Intraoral Scanner
Journal of Prosthodontics, 2021AbstractPurposeTo determine the influence of different scanning and ambient light conditions on the trueness values of an intraoral scanning (IOS) device.Material and methodsThe present study was conducted among 20 complete dentate volunteers. After making complete maxillary arch impressions with vinyl polysiloxane material, type IV dental stone was ...
Koseoglu, Merve/0000-0001-9110-9586; Akin, Hakan/0000-0002-4770-4297 +6 more
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Assuring trueness of analytical results
Fresenius' Journal of Analytical Chemistry, 1994A true analytical result presumes an analytical procedure without systematic errors. They can be detected by comparing the analytical results with the true value or with an accepted reference. Systematic errors are always superimposed by the random error, therefore such a comparison must include statistical tests.
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Clinical Factors Influence the Trueness of Intra-oral Scanning
European Journal of Prosthodontics and Restorative Dentistry, 2019The aim of this in vitro study was to evaluate the influence of adjacent teeth in the trueness of digital impressions.In this study the first premolar on a typodont mounted in a phantom head was prepared for an all ceramic crown. Three different operators scanned the tooth with an intraoral scanner, with three different clinical scenarios: with no ...
A, Jivanescu +5 more
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Performance of electrolyte measurements assessed by a trueness verification program
Clinical Chemistry and Laboratory Medicine (CCLM), 2016AbstractIn 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 +8 more
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Testing the trueness of circular surfaces: a simple holographic method
Applied Optics, 1979A new holographic method where the object motion or variation is transferred to some other subject (we can call it a probe) is suggested. The theory is developed and verified experimentally for an Ealing precision self-centering lens holder as the probe. The method possesses many advantagesover the conventional holographic interferometry, some of which
C S, Vikram, K, Vedam
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Edentulous jaw impression techniques: An in vivo comparison of trueness
The Journal of Prosthetic Dentistry, 2019Simplified edentulous jaw impression techniques have gained popularity, while their validity has not yet been evaluated.The purpose of this clinical study was to compare the trueness of maxillary edentulous jaw impressions made with irreversible hydrocolloid (ALG), polyvinyl siloxane (PVS), PVS modified with zinc oxide eugenol (ZOE) (PVSM), and an ...
Chebib, Najla +5 more
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