An In Vitro Comparative Study of the Push-out Bond Strengths of Various Endodontic Sealers to Radicular Dentin.

Background: The bond strength of an endodontic sealer to the root dentin is an important factor in maintaining the integrity of the root canal seal. The present study aimed to assess the push-out bond strength of three endodontic sealers used with the single-cone obturation technique.

Materials And Methods: The root canals of 40 central maxillary incisors were instrumented using ProTaper Universal NiTi rotary files.

Iris recognition approach for identity verification with DWT and multiclass SVM.

The iris has been proven to be one of the most stable and accurate biometrics. It has been widely used in recognition systems to determine the identity of the individual who attempts to access secured or restricted areas (., airports, ATM, datacenters).

Audiological assessment of neonatal hyperbilirubinemia.

Object: To evaluate the hearing of infants with history of neonatal hyperbilirubinemia using ABR.

Methods: A prospective randomized study carried on 100 infants whose hearing was assessed by ABR. Infants were allocated into two groups; case group which involve 60 infants with history of neonatal hyperbilirubinemia (bilirubin more than17 mg/dl and less than 30 mg/dl) and control group involve 40 healthy infants.

Estrogen and Progesterone Expression in Colorectal Carcinoma: A Clinicopathological Study.

Unlabelled: Sex steroids have been suggested to influence colorectal cancer (CRC) carcinogenesis. Also, exposure to exogenous hormones might contribute to its incidence. This study conducted to evaluate ER and PR expression as a prognostic factor in patients with CRC attending Sohag University Hospital (SUH) and Sohag Cancer Center (SCC).

Wild-Type Isocitrate Dehydrogenase 1 Over-Expression is Related to Cancer Stem Cells Survival in Lung Adenocarcinoma.

Altered metabolism is one of the characteristics of cancer cells. We evaluated the expression of wild-type Isocitrate Dehydrogenase 1 (IDH1) and the cancer stem cells (CSCs) marker CD44 by real-time PCR and levels of reduced form of glutathione in lung biopsies of 32 adenocarcinoma patients and 18 control subjects. We found that IDH1 and CD44 expression and the levels of reduced form of glutathione were significantly higher in lung adenocarcinoma patients.

Utero-placental perfusion Doppler indices in growth restricted fetuses: effect of sildenafil citrate.

Objective: To assess efficacy and tolerability of sildenafil citrate on utero-placental blood flow and fetal growth in pregnancies complicated by fetal growth restriction (FGR).

Methods: From March 2015, a randomized controlled trial of 54 patients at 24 weeks or more complicated by FGR and abnormal Doppler indices were randomly allocated 1:1 into an intervention arm (receive sildenafil citrate, 50 mg) or a control arm (receive placebo). The primary outcomes were changes occurred in the Doppler parameters 2 h following drug administration.

Sealing ability of three single-cone obturation systems: An in-vitro glucose leakage study.

Aim: The aim of this study is to compare the corono-apical sealing ability of three single-cone obturation systems using a glucose leakage model.

Materials And Methods: A total of 90 extracted maxillary single rooted teeth were selected and their crowns were cut. The root canal of each sample was instrumented using a rotary crown down technique and then divided into four experimental (n = 20 each) and two control groups (n = 5 each).

Evaluation of nestin in lung adenocarcinoma: relation to VEGF and Bcl-2.

Context: Nestin is a marker of multipotent precursor cells that is up regulated in cancer.

Objective: To explore its diagnostic role and its relationship to vascular endothelial growth factor (VEGF) and Bcl-2 in lung adenocarcinoma.

Materials And Methods: Evaluation of nestin expression in lung biopsies by real-time PCR and serum VEGF and Bcl-2 by ELISA in 27 adenocarcinoma patients and 15 control subjects.

Coronal discoloration effect of three endodontic sealers: An in vitro spectrophotometric analysis.

Aim: This in vitro study compared the coronal discoloration effect of three endodontic sealers at short-time intervals.

Materials And Methods: The crowns of 50 extracted premolars were cut and their pulp chambers were cleaned and randomly divided into five groups (n = 10). The following materials were placed into the pulp chambers: Group I: AH Plus, group II: Apexit Plus, group III: Sultan, group IV: Amalgam, and group V: Distilled water.

Photocatalytic degradation of phenol in natural seawater using visible light active carbon modified (CM)-n-TiO2 nanoparticles under UV light and natural sunlight illuminations.

The photocatalytic degradation of phenol in seawater was investigated under UV and natural sunlight using visible light active carbon modified (CM)-n-TiO2 nanoparticles, synthesized via a sol-gel method. Carbon modification of n-TiO2 was performed using titanium butoxide, carbon-containing precursor, as a source of both carbon and titanium. For comparison, unmodified n-TiO2 was also synthesized by hydrolysis and oxidation of titanium trichloride in the absence of any carbon source.