Effect of Different Root Canal Drying Protocols on the Bond Strength of Two Bioceramic Sealers.

Objectives:  This study evaluated the effect of two different drying protocols on the dentin bond strength of two different bioceramic sealers (Sealer Plus BC [SP] and Bio C Sealer [BCS]). Bond strength and failure mode were evaluated according to the sealer, drying protocol, and root canal third.

Materials And Methods:  Sixty extracted human mandibular single-rooted premolars were selected after anatomical standardization.

Postoperative pain after endodontic treatment of necrotic teeth submitted to large apical preparation using oscillatory kinematics.

Background: Regardless of the technique applied for chemomechanical preparation, postoperative pain is a very relevant matter in endodontics. Objective: To evaluate postoperative pain after endodontic treatment of necrotic teeth submitted to large apical preparation (LAP) using oscillatory kinematics.

Material And Methods: The sample included 60 asymptomatic necrotic teeth with or without apical radiolucency, and with normal periodontal status, referred for endodontic treatment.

PALLAS: Penalized mAximum LikeLihood and pArticle Swarms for Inference of Gene Regulatory Networks From Time Series Data.

We present PALLAS, a practical method for gene regulatory network (GRN) inference from time series data, which employs penalized maximum likelihood and particle swarms for optimization. PALLAS is based on the Partially-Observable Boolean Dynamical System (POBDS) model and thus does not require ad-hoc binarization of the data. The penalty in the likelihood is a LASSO regularization term, which encourages the resulting network to be sparse.

Percentage of Gutta-Percha-, Sealer-, and Void-Filled Areas in Oval-Shaped Root Canals Obturated with Different Filling Techniques: A Confocal Laser Scanning Microscopy Study.

Objective:  This study compared different obturation techniques, analyzing percentage of areas filled with gutta-percha, sealer, and voids (PGFA, PSFA, and PVFA, respectively) in oval-shaped root canals.

Materials And Methods:  A total of 60 extracted human mandibular central incisors were decoronated, instrumented, and irrigated using the same protocol. After drying, the root canal was filled with AH Plus labeled with 0.

Influence of the Calcium Hydroxide Intracanal Dressing on Dentinal Tubule Penetration of Two Root Canal Sealers.

Objective: The aim of this study was to evaluate the effect of a calcium hydroxide (CH) dressing on the tubular penetration of two endodontic sealers, AH Plus (Dentsply Maillefer, Ballaigues, Switzerland) and MTA Fillapex (Angelus, Londrina, Brazil).

Methods: Seventy-two mandibular premolars with a single root canal were prepared with ProFile.04 rotary instruments (Dentsply Maillefer) and divided into four groups.

Transepithelial transport of glucose and mRNA of glucose transporters in the small intestine of rats with iron-deficiency anemia.

Objective: To evaluate the transepithelial transport of sodium, glucose, potassium, and water and the mRNA level of the sodium-glucose cotransporter (SGLT1) and the facilitated sugar transporter (GLUT2) in the small intestine of iron-deficient rats.

Methods: After 6 wk of receiving diets with low or normal iron content, rats (Wistar-EPM) were subjected to two experiments: 1) evaluation of the transepithelial transport of sodium, glucose, potassium, and water by an "in vivo" experimental model of intestinal perfusion and 2) determination of relative SGLT1 and GLUT2 mRNA levels in the proximal, intermediate, and distal portions of the small intestine by the northern blotting technique.

Results: Hemoglobin and hepatic iron levels were statistically lower in the anemic rats.

Food intake, growth and body composition of children and adolescents with autoimmune hepatitis.

Objective: To evaluate the food intake, anthropometry, body composition, and sexual maturity of children and adolescents with autoimmune hepatitis.

Methods: Thirty-seven children and adolescents with autoimmune hepatitis were studied. A questionnaire was given to evaluate food intake over a 24-hour period.

Aggressiveness and hostility in the family environment and chronic constipation in children.

Objective: To compare the emotional aspects of children with and without constipation.

Methodology: Some emotional aspects were studied in children with and without constipation. A nonstructured interview was performed with the mothers regarding the emotional aspects of their children.

The performance of parents of children receiving cow's milk free diets at identification of commercial food products with and without cow's milk.

Objective: To investigate how well the parents of children on cow's milk free diets perform at recognizing whether or not expressions describe and foods contain cow's milk proteins.

Methods: Interviews were conducted with 24 parents of children on cow's milk and by-products exclusion diets and 23 parents of children with no need for any type of exclusion diet. They were asked if they recognized 12 expressions relating to cow's milk.

Global standard for the composition of infant formula: recommendations of an ESPGHAN coordinated international expert group.

The Codex Alimentarius Commission of the Food and Agriculture Organization of the United Nations (FAO) and the World Health Organization (WHO) develops food standards, guidelines and related texts for protecting consumer health and ensuring fair trade practices globally. The major part of the world's population lives in more than 160 countries that are members of the Codex Alimentarius. The Codex Standard on Infant Formula was adopted in 1981 based on scientific knowledge available in the 1970s and is currently being revised.

Morphological and functional alterations of the intestine of rats with iron-deficiency anemia.

The present study was designed to assess the intestinal absorption of D-xylose and jejunal morphometry in rats with iron-deficiency anemia. Male Wistar rats were randomly divided into a control group (diet containing 50 mg Fe/kg, N = 12) and an anemic group (diet containing <5 mg Fe/kg, N = 12). The animals were housed in individual metabolic cages and deionized water and diet were provided ad libitum for 6 weeks.

Cow's milk protein intolerance and chronic constipation in children.

Cow's milk protein (CMP) allergy was investigated in 25 children (age-range 3 months to 11 years) with chronic constipation. A diagnosis of constipation was made on the basis of a history of painful elimination of hard stools for at least 1 month, whether or not associated with a reduced frequency of stools or soiling. The children were evaluated using clinical parameters and the following laboratory tests: total serum immunoglobulin E (IgE); specific IgE (radioallergosorbent test [RAST]) for whole cow's milk, alpha-lactoalbumin, beta-lactoglobulin, and a food group; and skin-prick tests with whole milk, alpha-lactoalbumin, beta-lactoglobulin, and casein.

Metabolism of glutathione in isolated non filtering rat kidneys.

The aim of this work was to study the metabolism of glutathione in the isolated non-filtering rat kidney. Kidneys were perfused with Krebs-Henseleit solution containing 1 mM of glutathione. The analysis of the peptide residues and their components was done in an aminoacid microanalyzer.

Asymptomatic giardiasis does not affect iron absorption in children with iron deficiency anemia.

Objective: Malabsorption of iron has been reported in children with symptomatic giardiasis. The aim of this study was to evaluate intestinal absorption of iron in children with asymptomatic giardiasis and iron deficiency anemia.

Subjects: Based upon results of blood hemoglobin and stool examination, two groups were established: asymptomatic giardiasis and anemia, and anemia without intestinal parasitosis (control group).

Culture supernatants of Campylobacter jejuni induce a secretory response in jejunal segments of adult rats.

Culture supernatants of four Campylobacter jejuni strains induced a net sodium secretory flux (plasma-lumen) and an impaired glucose transport in perfused jejunal segments of adult rats in vivo.

Jejunal mucosa in marasmic children. Clinical, pathological, and fine structural evaluation of the effect of protein-energy malnutrition and environmental contamination.

Seven children suffering from marasmus were investigated clinically, biochemically and morphologically. The fine structure of the jejunal mucosa obtained by peroral biopsy was evaluated. The mucosal changes noted agree with the only other ultrastructural study reported by Brunser et al.

Stool bacterial aerobic overgrowth in the small intestine of children with acute diarrhoea.

The aerobic flora of 2 groups of children (normal and with malnutrition) with acute diarrhoea was studied, by intubation of the upper and middle small intestine and by stool culture. All the 27 children studied presented bacterial concentrations of 10(5) germs/ml at one or both levels studied. In 9 cases enteropathogen bacteria e were isolated from stools, and in 6 of these they were also found in the small intestine.