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Craniomandibular and TMJ orthopedics
560
Am. J. Orthod. Dentofac. Orthop. December 1990
Reviews and abstracts
erences toward the end of the volume serves as a tremendous source of supplemental reading. The original volume was written by Enlow, with contributions by Robert E. Moyers and William W. Merow. The updated version includes eight additional contributors known for their expertise in particular subjects. The additional sections include introductions to TMJ, birth defects, facial heredity, adult facial growth, growth control, biomechanics, and general body growth. The third printing is only 70 pages longer than the second edition. Rather than simply add chapters that would tend to make the book unwieldy, the principal author has trimmed from the book material not being used in his own graduate and undergraduate programs and tightened up the remainder of the text. The chapter on cephalometrics in the original version was written by Dr. Merow. B. Holly Broadbent, Jr. coauthored the chapter in the third edition. Since Dr. Moyers, one of the original contributors to the book, has written extensively on the subject of cephalometrics, and particularly on the inappropriateness of conventional cephalometrics, one is left wondering why he was not asked to provide or add another dimension to this particular section of the volume. The first edition of the book remains a classic and was a great contribution to the stockpile of knowledge on the subject of craniofacial growth. Because of the current demand for a greater understanding of the mechanisms of growth and development in both the medical and dental professions, the updated version of the book should have similar wide appeal to students in the firstdegree and advanced programs in these disciplines. Alex Jacobson
matognathic system. The claim that it is often easier to write a full-feature novel than a short story appears to be valid. The authors have demonstrated an ability to condense material from a vast field into the extensively referenced beginning chapters. The latter half of the volume deals with craniomandibular orthopedics in growing and nongrowing patients. In the treatment of craniomandibular asymmetries, a clear distinction is drawn between asymmetries of the bones and those caused by displacement of the mandible in intercuspal position. The therapeutic objectives throughout the book are to treat the anatomic and functional alteration of the system resulting from various structural insults and, if possible, to achieve full morphologic and functional restoration. The book is adequately illustrated with black and white photographs and drawings. Whereas one may not be in total agreement with every aspect of its content, the book does, however, contain a wealth of clinically useful information for students, general practitioners, and specialists in orthodontics and occlusion. A good investment. Alex Jacobson
Thesis abstracts The Potential Application of Fiber-Reinforced Composite as an Orthodontic Wire: Biomechanical Considerations Douglas A. Rollins Farmington: University of Connecticut, 1989
Craniomandibular and TMJ Orthopedics Franco Mangini and Wihelmine Schmidt Chicago: Quintessence Publishing, 206 pages, 491 illustrations, $54.00
The book, written by a husband-and-wife teamone an orthodontist and the other a specialist in occlusion-evolves around the concept of occlusion as a system comprising stomatognathic variables, namely, the temporomandibular joint, masticatory musculature, jaws and associated periodontal structures, and the pertinent parts of the central and peripheral nervous system, rather than simply being confined to interdigitating teeth. The first three chapters deal with the principles and monitoring of craniofacial growth and articular remodeling in the adult. This is followed by a review of the neurophysiology and pathophysiology of the sto-
To find more efficient orthodontic arch wires, we studied the properties of a new arch wire material, namely fiber-reinforced composite (FRC). FRC is a macroscopic combination of S2 glass fiber and thermoplastic matrix material. These two materials are formed into one unit by means of a coupling agent to chemically bridge the two components together. The wire shows great potential as a tooth-colored orthodontic wire that would be in great demand in today's esthetically minded practice of clinical orthodontics. By means of a two-bracket step-geometry orthodontic wire testing apparatus (with 0.022-inch slots), eight separate lots of 0.019 x 0.024-inch FRC wire (varying among three different matrix types and 47% to 63% glass fiber in their cross section) were tested for the following: force-deflection ratio (F / D rate),
Am. J. Orthod. Dentofac. Orthop. December 1990
Reviews and abstracts
erences toward the end of the volume serves as a tremendous source of supplemental reading. The original volume was written by Enlow, with contributions by Robert E. Moyers and William W. Merow. The updated version includes eight additional contributors known for their expertise in particular subjects. The additional sections include introductions to TMJ, birth defects, facial heredity, adult facial growth, growth control, biomechanics, and general body growth. The third printing is only 70 pages longer than the second edition. Rather than simply add chapters that would tend to make the book unwieldy, the principal author has trimmed from the book material not being used in his own graduate and undergraduate programs and tightened up the remainder of the text. The chapter on cephalometrics in the original version was written by Dr. Merow. B. Holly Broadbent, Jr. coauthored the chapter in the third edition. Since Dr. Moyers, one of the original contributors to the book, has written extensively on the subject of cephalometrics, and particularly on the inappropriateness of conventional cephalometrics, one is left wondering why he was not asked to provide or add another dimension to this particular section of the volume. The first edition of the book remains a classic and was a great contribution to the stockpile of knowledge on the subject of craniofacial growth. Because of the current demand for a greater understanding of the mechanisms of growth and development in both the medical and dental professions, the updated version of the book should have similar wide appeal to students in the firstdegree and advanced programs in these disciplines. Alex Jacobson
matognathic system. The claim that it is often easier to write a full-feature novel than a short story appears to be valid. The authors have demonstrated an ability to condense material from a vast field into the extensively referenced beginning chapters. The latter half of the volume deals with craniomandibular orthopedics in growing and nongrowing patients. In the treatment of craniomandibular asymmetries, a clear distinction is drawn between asymmetries of the bones and those caused by displacement of the mandible in intercuspal position. The therapeutic objectives throughout the book are to treat the anatomic and functional alteration of the system resulting from various structural insults and, if possible, to achieve full morphologic and functional restoration. The book is adequately illustrated with black and white photographs and drawings. Whereas one may not be in total agreement with every aspect of its content, the book does, however, contain a wealth of clinically useful information for students, general practitioners, and specialists in orthodontics and occlusion. A good investment. Alex Jacobson
Thesis abstracts The Potential Application of Fiber-Reinforced Composite as an Orthodontic Wire: Biomechanical Considerations Douglas A. Rollins Farmington: University of Connecticut, 1989
Craniomandibular and TMJ Orthopedics Franco Mangini and Wihelmine Schmidt Chicago: Quintessence Publishing, 206 pages, 491 illustrations, $54.00
The book, written by a husband-and-wife teamone an orthodontist and the other a specialist in occlusion-evolves around the concept of occlusion as a system comprising stomatognathic variables, namely, the temporomandibular joint, masticatory musculature, jaws and associated periodontal structures, and the pertinent parts of the central and peripheral nervous system, rather than simply being confined to interdigitating teeth. The first three chapters deal with the principles and monitoring of craniofacial growth and articular remodeling in the adult. This is followed by a review of the neurophysiology and pathophysiology of the sto-
To find more efficient orthodontic arch wires, we studied the properties of a new arch wire material, namely fiber-reinforced composite (FRC). FRC is a macroscopic combination of S2 glass fiber and thermoplastic matrix material. These two materials are formed into one unit by means of a coupling agent to chemically bridge the two components together. The wire shows great potential as a tooth-colored orthodontic wire that would be in great demand in today's esthetically minded practice of clinical orthodontics. By means of a two-bracket step-geometry orthodontic wire testing apparatus (with 0.022-inch slots), eight separate lots of 0.019 x 0.024-inch FRC wire (varying among three different matrix types and 47% to 63% glass fiber in their cross section) were tested for the following: force-deflection ratio (F / D rate),