Gastric acid exposure produces tooth structure demineralization and dental ceramic degradation. The most affected patients are those who suffer from gastroesophageal reflux disease, bulimia nervosa, pregnant women with prolonged severe nausea. In order to protect this kind of patient, the purpose study was determine whether simulated gastric leads microstructural changes in surface topography, ...

Nuchal translucency (NT) measurement in first trimester screening between 11 and 14 weeks' gestation has now been clearly identified as a marker for aneuploidies and in particular for trisomy 21. Even in the absence of aneuploidy increased fetal nuchal translucency has been shown to be a marker for fetal heart malformations and numerous other fetal defects and genetic syndromes when the measure...

Nuchal skin oedema at 10-14 weeks gestation, observed by ultrasonography as increased nuchal translucency (NT), is found in approximately 70% of fetuses with trisomies 21, 18 and 13 as well as those with Turner's syndrome. This study investigates the possibility that one mechanism for increased translucency is an altered composition of the skin with a higher concentration of hyaluronan; large a...

BACKGROUND Basal cell carcinoma (BCC) is the most common form of skin cancer and possesses various clinical features including translucency, ulceration, pigmentation, telangiectasia, and rolled borders. Accordingly, many cutaneous lesions can mimic BCCs and differential diagnosis is difficult. OBJECTIVE To clarify the differences in clinical characteristics between BCCs and BCC-mimicking lesi...

PURPOSE This study investigated the effect of amount of thickness reduction on color and translucency of dental monolithic zirconia ceramics. MATERIALS AND METHODS One-hundred sixty-five monolithic zirconia specimens (16.3 mm × 16.3 mm × 2.0 mm) were divided into 5 groups (Group I to V) according to the number of A2-coloring liquid applications. Each group was then divided into 11 subgroups b...

In order to reproduce translucent objects by 3D printers employing fully transparent (or clear) material, modeling the human visual perception of translucency is crucial. In this preliminary study, a set of 256 texture-less samples was created by mixing white and clear materials using multi-jet 3D printing. The samples differ in both lateral light transport properties and transmittance. Two psy...

AIMS The purpose of this study was to define the most suitable cut-off point for fetal nuchal translucency thickness in a screening program for aneuploidy and trisomy 21 in the south of Vietnam. MATERIAL & METHODS Two thousand and five hundred cases of singleton pregnancies were followed prospectively from the first trimester to the delivery. The rate of aneuploidy was calculated by seeking a...

In 42 cases of trisomy 13 at 10-14 weeks of gestation, compared with 947 controls, the median multiple of the median (MoM) of maternal serum free beta-human chorionic gonadotrophin (beta-hCG) and pregnancy associated plasma protein A (PAPP-A) was significantly decreased (0.506 MoM and 0.248 MoM respectively), whilst fetal nuchal translucency was increased (2.872 MoM). In 38% and 71% of cases of...

OBJECTIVE To evaluate the effect of verification bias on the accuracy of first-trimester nuchal translucency measurement for Down syndrome detection. METHODS We used MEDLINE and EMBASE to identify all papers relating the results of nuchal translucency measurement to fetal karyotype. The detected studies were scored for verification bias. Fifteen studies without and ten with verification bias ...