Am. J. Orthodonticu November 1962
orthodontic appliances without any evidence of root resorption. In this book statements dealing with root resorption of erupted teeth are an oversimplification. The cause of submerged teeth is explained as an interruption of the process of continuous eruption which normally maintains these teeth in the occlusal plane. No mention is made of the invasion of partially resorbed deciduous tooth roots by cancellous bone which produces ankylosis between tooth and jaw. Orthodontists should find this text of value as a reference book. J. A. S. Textbook
Edited by Gustav 0. Kruger, B.S., A.M., D.D.S., P.A.C.D., Washington, D. C. St. Louis, 1959, The C. V. Mosby Company. 573 pages, with 489 illustrations (including drawings by Biagio J. Melloni). Price, $12.75. Kruger and a group of outstanding contributors have produced a practical book which should prove of value to oral surgeons. Principles of surgery and surgical techniques are explained, and the management of infections is presented. The treatment of wounds and injuries of the soft tissues, the teeth, the alveolar process, and the jaws is given extended discussion. An outline of cleft lip and cleft palate surgery is presented. Since this text is intended for senior dental students, the concise discussion of the surgical technique of correcting cleft does not deal with the more complicated cases. The book is excellently illustrated and contains much material, especially on deformities of the jaws and face, which should prove of interest to orthodontists. A significant bibliography is provided. J. A. S.