Subject matter more simplified than before and more text boxes, flow charts and tables added for ease of understanding \nLinking of text matter to supplement Atlas for understanding the microscopic appearances \nColor photographs of oral cavity for clinical correlation with microscopic appearances \nAudio video presentation of oral histology slides to relate theoretical concepts to microscopic appearances \nChapter on Histochemistry simplified to meet undergraduate requirements \nDetailed references and unabridged version of text on Histochemistry is added to online resource \nMultiple choice questions in two levels of difficulty for self appraisal