BOOK REVIEWS
Essentials of orthognathic surgery, 2nd vertical mandibular ramus osteotomy (14 steps), LeFort I
maxillary osteotomy (43 steps), and genioplasty (23 steps).
edition The chapter ends by identifying and describing intraoper-
Johan P. Reyneke; Quintessence; 2010; www.quintpub.com;
280 pages; 821 illustrations (most in color); $180.00 ative diagnosis of condylar sag after bilateral split
osteotomy or during LeFort I maxillary osteotomy. The
Reviewed by Alex Jacobson diagrams and illustrations are unusually good, no doubt
carefully selected and in many instances almost self-
explanatory. The text should adequately meet the needs
T his text begins with a concise description of the
principles and treatment objectives of orthognathic
surgery, consultation, and clinical evaluation of a patient,
of orthodontic and maxillofacial surgery residents as
well as clinicians interested in orthognathic surgery.
analysis of diagnostic records, treatment planning, surgi-
Am J Orthod Dentofacial Orthop 2011;139:139
cal procedures, and possible complications. The patient 0889-5406/$36.00
with a dentofacial deformity receives the best results Copyright Ó 2011 by the American Association of Orthodontists.
from surgical therapy when there is clear and effective doi:10.1016/j.ajodo.2010.11.007
communication between the orthodontist and the maxil-
lofacial surgeon from the outset of treatment. This type of
communication is stressed in chapter 2, “Systematic
patient evaluation.” Numerous craniofacial and cephalo-
metric analyses are cited; to reduce the confusion, the Biomechanics in orthodontics:
author has provided summary analyses of anteroposterior Principles and practice
and vertical dentoskeletal and soft-tissue relationships, Ram S. Nanda and Yah S. Tosun; Quintessence; 2010;
and study cast evaluations. Chapter 3, “Diagnosis and www.quintpub.com; 168 pages; 350 two-color illustrations;
$98.00
treatment planning,” begins by providing a detailed case
overview, which in effect is a systematic patient evaluation Reviewed by Alex Jacobson
method whereby the short list in turn leads to an initial
diagnosis of the patient’s deformity. Described are the
facial changes associated with skeletal repositioning,
the esthetic objectives and surgical indications, and the
T he introductory chapter describes the physical laws
of mechanics governing forces and motions in the
context of orthodontics. Described are concepts such
specific orthodontic treatment required for facial surgery. as moments and couples, centers of resistance, center
Included is the best sequence of treatment to obtain the of rotation, and moment-to-force ratio, all of which
described result and the development of the final visual are essential to the understanding and control of ortho-
treatment objective. dontic tooth movements. The second chapter, “Applica-
Chapter 4 provides guidelines for the diagnosis and tion of orthodontic force,” discusses the physical
treatment of specific dentofacial deformities, beginning properties and the many variables involved in the variety
with patients having mandibular anteroposterior defi- of materials used in the components of an orthodontic
ciency and Class II malocclusion, which is the largest group appliance, such as brackets and the forces generated
of surgical-orthodontic patients. Two such patients are from archwires, coil springs, and elastic modules. Phys-
shown and described. This is followed by the treatment ical properties, such as stiffness, strength, working
sequence of 2 patients, one with mandibular anteroposte- ranges, spring back, and formability, and the testing of
rior excess and the other with maxillary anteroposterior these properties are described in detail. Chapter 3, “Anal-
deficiency. Also shown and described are patients with ysis of two-tooth mechanics,” details the force systems
maxillary vertical deficiency, vertical excess, rotation of created by straight and bent wires placed in the brackets
the maxillomandibular complex, open-bite deficiencies, of 2-tooth segments. In cases of crowding, an elastic
and dentofacial asymmetry. The chapter ends with straight wire is engaged in the brackets of teeth at differ-
a section on distraction osteogenesis and orthognathic ent angles and levels. The teeth move in response to the
surgery. Treatment procedures and results are described elasticity of the wire; however, deciphering all the forces
and shown. The fifth and final chapter is devoted to and moments in a complete dental arch is extremely
describing various orthognathic surgical procedures. The complex because of the different anchorage values of
following stepwise procedures are described and illus- the teeth, each having brackets and tubes of different
trated: bilateral split ramus osteotomy (36 steps), intraoral widths and at various angulations and levels to each
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