You can download Odontogenic Tumors and Allied Lesions by Hans P. Philipsen and Peter A Reichart free in pdf format.
This is an excellent text providing a very detailed and up-to-date review of odontogenic tumours and allied lesions. Written by highly respected experts in the relevant fields, it covers odontogenic tumours as classified in July 2003, and also provides relevant information on a variety of other related disorders such as fibrous dysplasia, cherubism and aneurysmal bone cysts.
The opening chapters are concerned with the classification of odontogenic tumours, normal odontogenesis and the radiological investigation of such lesions. The book then comprises chapters that consider each of the relevant lesions in some detail. In particular, each chapter provides discussion of terminology, clinical and radiological features, epidemiology, aetiological, pathogenesis, treatment and long-term behaviour of each lesion.
The information is well presented, good radiological images are provided, and the histopathological images generally delineate relevant features. When relevant, examples are given of the intra-oral manifestations of a particular disorder.
The chapters dealing with allied lesions are also well presented. I found the sections considering cherubism, fibrous dysplasia and melanotic neuroectodermal tumour of infancy particularly interesting and informing.