Photodynamic activity of protoporphyrinix rosebengalgold nanoparticle conjugates and pilot study on the photo therapy of oral lichen planus and leukoplakia

Abstract

Cancer is defined as an uncontrolled cell division of abnormal cells newlinewith the ability to metastasize to different parts of the body through blood and newlinelymphatic system They differ from the normal cells in their behavior newlinebiochemistry genetics and microscopic appearance Malignancies of the oral newlinecavity are predominantly caused by the usage of tobacco by smoking or newlinechewing and alcohol abuse and the incident probability is higher when both newlinehabits coincide Although the accessibility of the oral cavity is easier than newlineother sites most patients present with advanced stages and this results very newlinepoor survival rate and higher morbidity newline newline