“Epidermoid Cyst of Hard Palate and Evaluation of Healing by Color Power Doppler Ultrasonography: A Case Report

Abstract

Epidermoid cyst is a rare developmental cyst of the oro-facial region which results from entrapped epidermal elements with an incidence of 6.9-7% and represents less than 0.01% of all oral cavity cysts. PRF, as a physiologic fibrin matrix, serves as a net to stem cells, especially when an accelerated angiogenesis develops in the fibrin membrane. This aspect is of particular interest in the case of wide osseous defects. The Color Power Doppler detects minute areas of blood flow and the velocity of blood flow in healing bone by recording the change in frequency caused by the moving red blood cells. It demonstrates the progressive formation of new vessels in bone during the initial healing period. As the bone remodelling proceeds, there is a decrease in flow signals.