Background: There is increased use of all-ceramic crowns in place of ceramo-metal crowns in restorative practices. The difference in properties of different ceramics will affect the final esthetics of the restoration, and we need to consider this, especially when restoring anterior teeth. This article compares and analyzes translucency levels of different zirconia-based ceramic CAD/CAM systems....

Abstract Joubert syndrome (JS) is a rare autosomal recessive neurodevelopmental disorder that usually diagnosed late in pregnancy or postnatally based on pathognomonic midbrain–hindbrain malformation seen magnetic resonance imaging brain, which consists of the hypoplasia cerebellar vermis, thickened superior peduncles, and deepened interpeduncular fossa described as molar tooth sign. The recurr...

Objective: The present study aims to evaluate the color stability and degree of conversion amine-free dual cured resin cement compared light amine-containing cements used with two different translucencies thin esthetic restorations. Material Methods: A total 120 specimens were prepared for testing (n=60). divided into three main groups according type. Group 1: cured, 2: 3: cured. Each group was...

OBJECTIVE Many studies have shown that an increased nuchal translucency (NT) may be a good marker of fetal heart malformation, but the extent to which NT is suitable for identifying the population at risk remains unclear. We aimed to determine the value of NT measurement and of the presence of cystic hygroma colli in the screening of euploid fetuses for congenital heart defects (CHD). METHODS...

When a surface is viewed through a partially-transmissive material, the optical contributions of the two layers in a given viewing direction are collapsed onto a single intensity in the projected image. If a computer vision system is to recover the scene correctly, it must be able to decompose or scission the image intensity into the separate contributions of the two material layers (see Fig. 1...

The aim of this study is to evaluate the influence of modeling liquids on the translucency and color shade of resin composites (RCs) after one year of storage. RC specimens were prepared using either a conventional insertion technique (control; without modeling liquid) or a restorative dental modeling insertion technique (RDMIT) with dental adhesives as modeling liquids (Scotchbond™ Multi-Purpo...

STATEMENT OF PROBLEM For restorations with excellent esthetics, an understanding of the optical properties of human dentin is needed. Little information is available on the translucency and color parameters of dentin and its relationship to tooth type and position. PURPOSE The purpose of this in vitro study was to investigate the translucency and CIELab color coordinates of human dentin in bo...

background: to study the outcome of cases with nuchal translucency (nt) ≥ 95th centile in the first trimester of pregnancy. methods: this cross sectional study was performed at iranian fetal medicine foundation (fmf) between january 2009 and december 2011. totally, 186 cases with nt≥ 95th centile who attended for the first trimester screening were studied. all cases with increased nt including ...