I have purchased this textbook from another supplier but very disppointed with the physical quality of the book. It looks to me as a photocopy of the original first edition (Churchill Livingston 1999). I used the first edition many years ago in my postgraduate studies and was excellent and contributed a lot to my clinical understanding of the oral conditions. But, if this current edition is just a copy of the original edition, this means It is not revised or updated in accordance to the ongoing research which may render some of its subjects outdated.