• State-F: Forward Outliers p(dx|Zx,mx = 1) = Uf (dx|Zx) = Uf · 1[dtxZx]. For the purpose to combine all the three states into a united model and describe the overall likelihood that the input depth samples fit the current static structure, we use a mixture model similar to the Gaussian Mixture Model [1]. Together with ...

OBJECTIVES The aim of this in vivo study was to assess the accuracy of 2 third-generation electronic apex locators (EALs), Propex II (Dentsply Maillefer) and Root ZX II (J. Morita), and radiographic technique for locating the major foramen (MF). MATERIALS AND METHODS Thirty-two premolars with single canals that required extraction were included. Following anesthesia, access, and initial canal...

Aim and objectives: To assess the accuracy of Tri Auto ZX as an apex locator and its automatic apical reverse mechanism (AAR) set at 0.5, 1 and 1.5mm using Pro-Taper instruments. Materials and Methods: Forty-five freshly extracted single rooted human teeth were used and divided into three groups: (1) Teeth prepared using AAR set at 0.5mm (2) Teeth prepared using AAR set at 1mm (3) Teeth prepare...

Zeaxanthin epoxidase (ZE) is an enzyme operating in the violaxanthin cycle, which is involved in photoprotective mechanisms. In this work model systems to study zeaxanthin (Zx) epoxidation were developed. Two assay systems are presented in which epoxidation of Zx was observed. In these assays two mutants of Arabidopsis thaliana which have active only one of the two xanthophyll cycle enzymes wer...

Objectives: To evaluate the accuracy between two different electronic apex locators in detecting root canal perforation middle and apical portion during retreatment. Methods: Sixty freshly extracted mandibular premolars were taken to this study, which divided into three groups of twenty each. Group I: Control Group, II: Positive control without perforation, III: Negative with perforation. In al...

The aim of this study was to evaluate the accuracy of five electronic apex locators (EALs) in determining the working length (WL) of teeth after removal of the root canal obturation materials. A total of 32 extracted straight, single-rooted teeth were used. The actual canal length (AL) was determined and the WL was established by subtracting 0.5 mm from the AL. The root canals were instrumented...

Introdução: A determinação correta do comprimento de trabalho durante a terapia endodôntica é imprescindível para o sucesso tratamento. Objetivo: O objetivo desse estudo foi comparar, in vitro, precisão dois localizadores foraminais eletrônicos (LFE): Root ZX (J. MORITA) e Finepex (SCHUSTER)em determinar real dos canais. Material métodos: Foram utilizados 32 pré-molares inferiores extraídos, ap...