Study Notes

The null hypothesis is a fundamental concept in scientific research, including dentistry, which serves as a starting point for conducting experiments or studies. It is a statement that assumes there is no relationship, difference, or effect between the variables being studied. The null hypothesis is often denoted as H₀. In dentistry, researchers may formulate a null hypothesis to test the efficacy of a new treatment, the relationship between oral …

Innervation of the Pharynx The motor and most of the sensory supply of the pharynx is derived from the pharyngeal plexus of nerves on the surface of the pharynx. The plexus is formed by pharyngeal branches of the vagus (CN X) and glossopharyngeal (CN IX) nerves, and by sympathetic branches for the superior cervical ganglion. The motor fibres in the pharyngeal plexus are derived from the cranial root of accessory nerve (CN XI), and are carried by the…

Components  a. Fillers added to most to control shrinkage b. Matrix

Ichthyosis vulgaris is a genetic disease characterized by increased cohesiveness of the cells in the stratum corneum, resulting up in a piling up stratum corneum (scales like a fish).…

Portal hypertension  It is elevation of the portal venous pressure (normal 7 m.m Hg).   Causes:-  1- Presinusoidal      2- Sinusoidal          3- Postsinusoidal   Presinusoidal:-    a. Massive splenomegaly and increased splenic blood flow.   b. Portal vein obstruction by thrombosis or outside pressure.   c. Portal venular obstruction at the portal tracts e.g. by fibros…