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Die plattenapparatur in der kieferorthopadie (Removable appliance in jaw orthopedics)
DEPARTMENT OF REVIEWS AND ABSTRACTS Edited by
Thomas J. Zwemer, D.D.S., M.S.D. Augusta, Ga. All inquiries regarding information on reviews and abstracts should be directed to the respective authors. Articles or books for review in this department should be addressed to Dr. Thomas J. Zwemer, Medical College of Georgia, Augusta, Georgia 30902.
Die Plattenapparatur in der Kieferorthopadie (Removable Appliance in Jaw Orthopedics) Joachim Triinkmann Berlin, 1985, Quintessenz Verlags-GmbH. 308 pages, 210 illustrations, bibliography, and index
The author, a recognized authority on the use of removable appliances, furnishes a detailed guideline for the construction of appliances. Other chapters include diagnosis, treatment planning, indication of removable appliances, beginning treatment according to stage of dental development, treatment progress, and unsuccessful treatment. The major part of this book is devoted to the discussion of treatment progress (197 pages) profusely illustrated, leaving 86 pages for the other chapters. The quality of illustrations is excellent. The main design feature of Professor Tr~inkmann's removable appliances is a high buildup of acrylic along the lingual surfaces of the teeth, reaching to just below the cusp tips of posterior teeth. The appliances are firmly anchored with triangular-shaped clasps between first and second premolars as well as second premolars and permanent first molars. Adams clasps are used only for maxillary molars and occlusal rests are routinely constructed on mandibular molars to prevent instability of removable appliances in the mandibular dentition. Detailed instructions in clasp bending (with ample illustrative material) and labial bow bending are provided. For the movement of individual teeth, the author clearly prefers to build small screws in the appliance, "springs slide off." The workup of acrylic along the entire lingual or palatal surface of the tooth crowns and firm anchorage of the plate ensure an efficient force application to correct malposition of individual teeth. Screws are used also for distal movement of posterior teeth (one by one) and for transversal adjustment of dental arch breadth (Professor Tdinkmann is not an expansionist). Careful instructions are also given for placement of screws and polymerization of acrylic by the salt-andpepper method. The chapter on diagnosis is short and flows quickly into treatment planning from which the
reader learns indirectly what corrections are undertaken with removable appliances. Furthermore, detailed information is given in the discussion of the indication of removable appliances. Treatment progress covers illustrations and information on a variety of conditions encountered in the office of an orthodontist. Moreover, records of patients with cleft lip and palate treated shortly after birth or at later ages are discussed. Of particular interest is the treatment of adults with removable appliances, which in itself has become a valuable adjunct to the therapeutic armamentarium because removable appliances can move teeth and the appliance itself can be removed by the patient, when necessary. The key to success of orthodontic treatment with removable appliances is in the first place "diagnosis and treatment planning." This assessment reflects the voice of an experienced clinician, but Professor Tr~inkmann has also stressed in his book that removable appliances are not simply devices made by a laboratory from a quick impression of the patient's dentition. Meticulous care and design are the indispensable primary conditions for starting treatment, and imaginative adjustments and modifications are likewise key factors for successful use of these appliances. Their use is a great challenge to the skill of the orthodontist as in any fixed appliance. Removable appliances are not for amateurs. Coenraad F. A. Moorrees
Research abstracts Computer-assisted Instruction in Mixed Dentition Analysis N. Ross Irvine and Robert N. Moore In reviewing final examinations given in the introductory orthodontic course at the University of Nebraska College of Dentistry in previous years, a consistently lower level of student performance was noted on questions dealing with the topic of mixed dentition analysis (MDA) and its clinical applications. The objective of this study was to evaluate the instructional
267
Thomas J. Zwemer, D.D.S., M.S.D. Augusta, Ga. All inquiries regarding information on reviews and abstracts should be directed to the respective authors. Articles or books for review in this department should be addressed to Dr. Thomas J. Zwemer, Medical College of Georgia, Augusta, Georgia 30902.
Die Plattenapparatur in der Kieferorthopadie (Removable Appliance in Jaw Orthopedics) Joachim Triinkmann Berlin, 1985, Quintessenz Verlags-GmbH. 308 pages, 210 illustrations, bibliography, and index
The author, a recognized authority on the use of removable appliances, furnishes a detailed guideline for the construction of appliances. Other chapters include diagnosis, treatment planning, indication of removable appliances, beginning treatment according to stage of dental development, treatment progress, and unsuccessful treatment. The major part of this book is devoted to the discussion of treatment progress (197 pages) profusely illustrated, leaving 86 pages for the other chapters. The quality of illustrations is excellent. The main design feature of Professor Tr~inkmann's removable appliances is a high buildup of acrylic along the lingual surfaces of the teeth, reaching to just below the cusp tips of posterior teeth. The appliances are firmly anchored with triangular-shaped clasps between first and second premolars as well as second premolars and permanent first molars. Adams clasps are used only for maxillary molars and occlusal rests are routinely constructed on mandibular molars to prevent instability of removable appliances in the mandibular dentition. Detailed instructions in clasp bending (with ample illustrative material) and labial bow bending are provided. For the movement of individual teeth, the author clearly prefers to build small screws in the appliance, "springs slide off." The workup of acrylic along the entire lingual or palatal surface of the tooth crowns and firm anchorage of the plate ensure an efficient force application to correct malposition of individual teeth. Screws are used also for distal movement of posterior teeth (one by one) and for transversal adjustment of dental arch breadth (Professor Tdinkmann is not an expansionist). Careful instructions are also given for placement of screws and polymerization of acrylic by the salt-andpepper method. The chapter on diagnosis is short and flows quickly into treatment planning from which the
reader learns indirectly what corrections are undertaken with removable appliances. Furthermore, detailed information is given in the discussion of the indication of removable appliances. Treatment progress covers illustrations and information on a variety of conditions encountered in the office of an orthodontist. Moreover, records of patients with cleft lip and palate treated shortly after birth or at later ages are discussed. Of particular interest is the treatment of adults with removable appliances, which in itself has become a valuable adjunct to the therapeutic armamentarium because removable appliances can move teeth and the appliance itself can be removed by the patient, when necessary. The key to success of orthodontic treatment with removable appliances is in the first place "diagnosis and treatment planning." This assessment reflects the voice of an experienced clinician, but Professor Tr~inkmann has also stressed in his book that removable appliances are not simply devices made by a laboratory from a quick impression of the patient's dentition. Meticulous care and design are the indispensable primary conditions for starting treatment, and imaginative adjustments and modifications are likewise key factors for successful use of these appliances. Their use is a great challenge to the skill of the orthodontist as in any fixed appliance. Removable appliances are not for amateurs. Coenraad F. A. Moorrees
Research abstracts Computer-assisted Instruction in Mixed Dentition Analysis N. Ross Irvine and Robert N. Moore In reviewing final examinations given in the introductory orthodontic course at the University of Nebraska College of Dentistry in previous years, a consistently lower level of student performance was noted on questions dealing with the topic of mixed dentition analysis (MDA) and its clinical applications. The objective of this study was to evaluate the instructional
267