Search results for " APICA"

Danger zone analysis using cone beam computed tomography after apical enlargement with K3 and K3XF in a manikin model

2015

Background The objective of the study was to evaluate and compare how apical enlargement with K3 and K3XF nickel-titanium (NiTi) rotary instruments reduces the root thickness in the danger zone and affects canal transportation and centering ability in mandibular molar mesial canals in a manikin extracted tooth model. Material and Methods Seventy-two mesial root canals of first mandibular molars were instrumented. Initial and post-instrumentation Cone Beam Computed Tomography scans were performed after root canal preparation up to size 25, 30, 35 and 40 files. Canal transportation, canal centering and remaining root dentin thickness toward the danger zone were calculated in sections 1, 2 and…

Three-dimensional analysis of the physiological foramen geometry of maxillary and mandibular molars by means of micro-CT.

2017

The aim of this study was to investigate the physiological foramen diameter, shape and distance between physiological and anatomical apex of maxillary and mandibular first and second molars. Accurate knowledge of the physiological foramina morphology; thus, inherent mechanical shaping technical hindrances, is decisive when taking the corresponding root canal final preparation decision. The morphological dimensions of a total of 1727 physiological foramina were investigated by means of micro-computed tomography. Mean narrow and wide (to a high number, oval) diameters of the physiological foramen were 0.24, 0.22 and 0.33 mm and 0.33, 0.31 and 0.42 mm in mesiobuccal (MB), distobuccal (DB) and …

A promising new ELISA diagnostic test for cattle babesiosis based on Babesia bigemina Apical Membrane Antigen-1.

2016

Babesiosis due to Babesia bigemina is a relevant tick‑borne disease, affecting cattle worldwide. Many surface proteins of the pathogen including the Apical Membrane Antigen 1 (AMA‑1) ‑ have been analysed for vaccine and diagnostic purposes. This study focused on B. bigemina AMA‑1 and on its use for the assessment of diagnostic tests. After bioinformatic analyses, AMA‑1 codifying region was amplified and cloned into an expression vector used to induce protein synthesis in Escherichia coli cells. AMA‑1 was purified by affinity chromatography and used to set up the best condition for an ELISA protocol. Bovine field sera positive to B. bigemina were used to evaluate the presence of anti‑AMA‑1 a…

Variabilité architecturale du test chez le genre Collyrites (Echinoidea, Disasteroidea) au Jurassique moyen.

2007

Resume L’evolution de l’architecture du test et en particulier celle du « complexe systeme apical–periprocte » chez le genre Collyrites (Echinoidea, Disasteroidea) est analysee pour les especes des etages Bathonien et Callovien (Jurassique moyen) provenant de plusieurs localites du bassin de Paris. Le systeme apical du genre Collyrites est subdivise en deux parties : (i) une partie anterieure, denommee trivium, composee de quatre plaques genitales (1, 2, 3, 4) et de trois plaques ocellaires (II ; III ; IV) ; (ii) une partie posterieure, denommee bivium, composee de deux plaques ocellaires (I, V) et d’une plaque genitale (5), sans gonopore et non fonctionnelle, entourant le periprocte. Le pa…

Behavioural and pharmacological characterization of a novel cannabimimetic adamantane-derived indole, APICA, in C57BL/6J mice

2015

The novel adamantane derivative APICA (N-(adamtan-1-yl)-1-pentyl-1H-indole-3-carboxamide) was recently identified as a cannabimimetic indole of abuse (1, 2). Despite its novel structure, APICA recalls cannabimimetic indoles, such as representative member JWH-018. The emerging abuse problem, together with the paucity of information about the bioactivity of APICA (3) emphasize the need for further evaluation of the in vivo pharmacology of this novel indole-derived compound. In the present study, the effects of APICA (0 - 1 - 3 mg/Kg, i.p.) were tested in C57BL/6J mice, in a battery of tests that are sensitive to the effects of psychoactive cannabinoids, including body temperature; locomotor a…

A randomized controlled trial of endodontic treatment using ultrasonic irrigation and laser activated irrigation to evaluate healing in chronic apica…

2019

Background Aim of this trial was to evaluate the combined clinical and radiographic success rate of endodontic treatment using passive ultrasonic irrigation (PUI) and laser activated irrigation (LAI) as compared to conventional syringe irrigation. Material and methods Permanent incisors and single rooted premolars were assessed for eligibility and 69 patients were randomly divided into three treatment groups (n=23) by allocation concealment method and irrigation was performed in accordance with the allocated group. Teeth were evaluated clinically and radiographically with CBCT after 6 months and 12 months of the treatment. Results A significant difference was observed in the radiographic he…

Le Confessioni religiose «del terzo tipo» nell'arena pubblica nazionale: problemi, dinamiche e tendenze operative

2014

The essay examines the legal status of confessional entities that have no agreement relationships with State, and who also did not obtainthe recognition stated by the 1929 law on «culti ammessi». It first discusses the difficulty such entities have experienced in achieving such recognition, which is mainly due to the practice adopted by the apical Administration - forced by legislative inertia in the field - which interprets the recognition very broadly, as a moment of the confesson's special «accountability», not stated by positive law. The lack of such «informal» status affects several aspects of the crucial choices that named entities make about the «style of presence» to be adopted in p…

Necrosi apicale del Mango (Mangifera indica L.)causata da Pseudomonas syringae pv. syringae van Hall, in Sicilia.

2003

Charoite, as an example of a structure with natural nanotubes

2012

Charoite from the Murun massif in Yakutiya, Russia (Vorob’ev 2008) was investigated using automated electron diffraction tomography (ADT) (Kolb et al. 2007, 2008; Mugnaioli et al. 2010) and precession electron diffraction (PED) (Mugnaioli et al. 2010, 2009), which allowed to determine the structure of charoite for the first time. The structure was solved ab initio in space group P21/m by direct methods using a fully kinematic approach. The least squares refinements with 2878 reflections F(hkl) >4s F converged to unweighted/weighted residuals R 1/wR 2 • 0.173/0.21 (Rozhdestvenskaya et al. 2010).

Estudo Comparativo da Infiltração Apical entre Dois Cimentos Endodônticos

2009

ResumoO objectivo deste estudo é comparar a capacidade de selamento apical de dois cimentos endodônticos. Foram utilizados trinta e oito dentes monorradiculares e divididos em dois grupos de 15 elementos, de acordo com o cimento utilizado (Grupo A: AH Plus e Grupo B: Tubli-Seal). Foram utilizados oito dentes nos grupos controlo positivo e negativo que não foram obturados (Grupo C). Os canais foram instrumentados pela técnica de crown-down, utilizando as limas Hero Shaper® and Hero 642® (Micro-Mega S.A., Besançon, France) e irrigados com hipoclorito de sódio a 5,25% entre cada instrumento. O smear layer foi removido utilizando 3ml de EDTA a 17% no final da instrumentação durante 3 minutos, s…