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Mostrando ítems 11-20 de 9022
Overidentification tests for the exogeneity of instruments in discrete choice models
(Elsevier, 2018)
Endogeneity is often present in discrete choice models, precluding the consistent estimation of the model parameters. To correct for this problem, the researcher needs to gather exogenous instrumental variables, which ...
Métodos de variável instrumental fuzzy para identificação de sistemas
(Sociedade Brasileira de Automática, 2007)
A method for retrieving endodontic or atypical non-endodontic separated instruments from the root canal: a report of two cases
(2015)
Aim: This clinical report presents a new method for retrieving separated instruments from the root canal with minimally invasive procedures. Background: The presence of separated instrument in root canal may interfere in ...
Initial stages of attitude’s instrument adaptation to brazilian sports competitions
(2014)
The aim of this study was to adapt and initiate validation of an instrument of attitudes toward mathematics to sports competitions. So through a correlational study, we adapted the instrument counting on a total sample of ...
Calcium hydroxide intracanal dressing removal with different rotary instruments and irrigating solutions: A scanning electron microscopy study
(2010-11-30)
This study evaluated the efficacy of 2 types of rotary instruments employed in association with sodium hypochlorite (NaOCl) or EDTA in removing calcium hydroxide (CH) residues from root canals dentin walls. Forty-two ...
Simulated damage of two implant debridement methods: Nonsurgical approach with Teflon and stainless steel hand scalers
(2018-07-01)
Background: Mechanical scaling is the most common treatment of periodontal and peri-implant tissue infections. Aims: This study aimed to evaluate the effect of mechanical prophylactic therapy on the residual stresses in ...
Instrumented Color Determination And Sensory Analysis Of Tomato Fruits (lycopersicum Esculentum Mill)
(Igi GlobalHershey, 2017)
Flexibility and Torsional Strength of ProTaper and ProTaper Universal Rotary Instruments Assessed by Mechanical Tests
(Elsevier B.V., 2009-01-01)
The purpose of this study was to assess how the geometric and dimensional changes made on ProTaper Universal (PTU) instruments in comparison with ProTaper (PT) instruments affected their flexibility and torsional strength. ...
Comparison of cyclic fatigue and torsional resistance in reciprocating single-file systems and continuous rotary instrumentation systems
(Nihon Univ, School Dentistry, 2014-12-01)
As compared with continuous rotary systems, reciprocating motion is believed to increase the fatigue resistance of NiTi instruments. We compared the cyclic fatigue and torsional resistance of reciprocating single-file ...