Origin of growth defects in pearl

Surgical Pearl on Reconstructing Surgical Defects of the Nasal Tip

Repairing surgical defects of the nasal tip is challenging, mainly because of the lack of freely mobile skin available peripherally. The Peng flap is a one-stage cutaneous flap that circumvents this difficulty by recruiting skin from the nasal dorsum and sidewall regions. The design produces a tridimensional shape perfectly adapted to the configuration of the nasal tip and allows for an inconsp...

Origin of highly active metal-organic framework catalysts: defects? Defects!

This article provides a comprehensive review of the nature of catalytic sites in MOFs. In the last decade, a number of striking studies have reported outstanding catalytic activities of MOFs. In all cases, the authors were intrigued as it was unexpected from the ideal structure. We demonstrate here that (surface) defects are at the origin of the catalytic activities for the reported examples. T...

The effect of plasma rich in growth factors (PRGF) in the treatment of periodontal three-walled intrabony defects

Introduction: The aim of periodontal treatment is to regenerate periodontium. Regenerative treatments include the use of plasma that is rich in growth factors (PRGF). Materials & Methods: In a randomized clinical trial, 20 three-walled intrabony defects from five patients with moderate periodontitis were randomly assigned to three groups. Patients in the control group underwent debridement of ...

Neural Tube Defects – From Origin to Treatment

Background: Genetic factors and a dysregulated immune response towards commensal bacteria contribute to the pathogenesis of Inflammatory Bowel Disease (IBD). Animal models demonstrated that the normal intestinal flora is crucial for the development of intestinal inflammation. However, due to the complexity of the intestinal flora, it has been difficult to design experiments for detection of pro...

The origin of an immediate diastolic murmur in atrioventricular defects.