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Clinical diagnosis compared with findings of magnetic resonance imaging in 242 patients with internal derngement of the TMJ
American Journal of Orthodontics and Dentofacial Orthopedic Volume 111, No. 4
Reviews and abstracts
459
Chapter 9 is devoted to research applications of cephalometry and Chapter 10 concerns the cephalometric assessment of cervical angulation, pharyngeal relationships, soft palate dimensions, hyoid bone, and tongue positions. While this information is not often used in the clinical practice of orthodontics, the information is often the topic of orthodontic research and may find future clinical usefulness. Chapter 11 reviews digital computed radiology with cephalometric applications. Although digital radiology has not spread to orthodontic applications, the advantages of reduced radiation exposure, lack of chemical processing , and image enhancement portend increased popularity in the future. Chapter 12 introduces the reader to computerized cephalometrics and reviews the computerized cephalometric systems currently available. For the practitioner contemplating the purchase of such a system, this chapter alone may be worth the purchase price of the book. Chapter 13 concludes with a compilation of 23 different cephalometric analyses. For each analysis, there is a review, graphic depiction, and an explanation of the derivation of the norms. This book is extensively referenced, and beautifully presented with superb photography and graphics, it could easily establish a has of knowledge for both the beginner and experienced practitioner. For any one interested in diagnosing pathology, posteroanterior cephalometry, digital radiology, or computerized cephalometrics, the text will be especially useful.
joint of the contralateral side. There was no statistically
T. Michael Speidel
The purpose of this study was to evaluate growth behavior with treatment of orthopedic appliances using the standard growth curves of maxilla and mandible. Materials consisted of longitudial lateral cephalometric roentgenograms of 21 Class I females without any orthopedic treatment, 10 females with headgear treatment, and 13 females with chincap treatment. The average growth curve and growth velocity of the patients treated by occipital pull headgear and chincap appliances were drawn on standard growth curve. Results were as follows: (1) The standard growth and velocity curves of maxillary length ('-Ptm'), mandibular total length (Cd-Gn), rams height (CdGo), and mandibular body length (Go-Pog') were made from 9 to 17 years of age. (2) The growth velocity of the maxillary length tended to decrease under the application of headgear, and increase after removal. There were no significant differences between the initial and last stage SD scores. (3) The growth velocity of each part of the mandible significantly decreased under the application of chincap, but increased after removal. There were no significant differences between the initial and last stage SD scores.
Clinical Diagnosis Compared with Findings of Magnetic Resonance Imaging in 242 Patients with Internal Derngement of the TMJ Richard E. Marguelles-Bonnet, DDS, P. Carpentier, DDS, J. P. Yung, DDS, D. Defrennes, MD, C. Pharaboz, MD J Orofacial Pain 1995;9:244-53
The aim of this study was to compare the provisional diagnosis based on an initial clinical examination with subsequent findings of magnetic resonance imaging in patients with internal derangement of the temporomandibular joint. Clinical examinations were conducted on 242 patients (198 women and 44 men) who had unilateral (51%) or bilateral (49%) temporomandibular joint internal derangement. They were divided into the following catergories: (1) disk displacement with reduction; (2) disk displacement without reduction; (3) "stuck" disk; (4) degenerative arthrosis with or without one of the above; and (5) normal temporomandibular
signficant difference in te distribution of disorders on a unilateral or bilateral basis or in the prevalence of disorders in fight versus left joints. Based on the high ocurrence of matching true-negative data, this study showed a highly statistically significant correlation between the magnetic resonance findings and the clinical data for all categories of derangement. Despite this high correlation, the magnetic resonance imaging and clinical diagnoses matched exactly in only 287 of the 484 joints studies. There was only partial agreement in the remaining 197 joints. The best clinical diagnosis in relation to the magnetic resonance findings was observed in teh arthrosis category followed by the categories of normal joint, disk displacement with reduction, stuck disk, and disk displacement without reduction, in descending order. This study strongly suggests that degenerative arthrosis is a result of a long-term displaced disk. The clinical examination alone did not correctly indicate all teh structural defects: therefore it is insufficient for determining the status of the joint. Alex Jacobson
The Evaluation of the Orthopedic Appliances by Using Standard Growth Curves of Maxilla and Mandible Keio Kusumoto, Koshi Sato, and Hideo Mitani J Jpn Orthod Soc 1996;55(4):311-21
Reviews and abstracts
459
Chapter 9 is devoted to research applications of cephalometry and Chapter 10 concerns the cephalometric assessment of cervical angulation, pharyngeal relationships, soft palate dimensions, hyoid bone, and tongue positions. While this information is not often used in the clinical practice of orthodontics, the information is often the topic of orthodontic research and may find future clinical usefulness. Chapter 11 reviews digital computed radiology with cephalometric applications. Although digital radiology has not spread to orthodontic applications, the advantages of reduced radiation exposure, lack of chemical processing , and image enhancement portend increased popularity in the future. Chapter 12 introduces the reader to computerized cephalometrics and reviews the computerized cephalometric systems currently available. For the practitioner contemplating the purchase of such a system, this chapter alone may be worth the purchase price of the book. Chapter 13 concludes with a compilation of 23 different cephalometric analyses. For each analysis, there is a review, graphic depiction, and an explanation of the derivation of the norms. This book is extensively referenced, and beautifully presented with superb photography and graphics, it could easily establish a has of knowledge for both the beginner and experienced practitioner. For any one interested in diagnosing pathology, posteroanterior cephalometry, digital radiology, or computerized cephalometrics, the text will be especially useful.
joint of the contralateral side. There was no statistically
T. Michael Speidel
The purpose of this study was to evaluate growth behavior with treatment of orthopedic appliances using the standard growth curves of maxilla and mandible. Materials consisted of longitudial lateral cephalometric roentgenograms of 21 Class I females without any orthopedic treatment, 10 females with headgear treatment, and 13 females with chincap treatment. The average growth curve and growth velocity of the patients treated by occipital pull headgear and chincap appliances were drawn on standard growth curve. Results were as follows: (1) The standard growth and velocity curves of maxillary length ('-Ptm'), mandibular total length (Cd-Gn), rams height (CdGo), and mandibular body length (Go-Pog') were made from 9 to 17 years of age. (2) The growth velocity of the maxillary length tended to decrease under the application of headgear, and increase after removal. There were no significant differences between the initial and last stage SD scores. (3) The growth velocity of each part of the mandible significantly decreased under the application of chincap, but increased after removal. There were no significant differences between the initial and last stage SD scores.
Clinical Diagnosis Compared with Findings of Magnetic Resonance Imaging in 242 Patients with Internal Derngement of the TMJ Richard E. Marguelles-Bonnet, DDS, P. Carpentier, DDS, J. P. Yung, DDS, D. Defrennes, MD, C. Pharaboz, MD J Orofacial Pain 1995;9:244-53
The aim of this study was to compare the provisional diagnosis based on an initial clinical examination with subsequent findings of magnetic resonance imaging in patients with internal derangement of the temporomandibular joint. Clinical examinations were conducted on 242 patients (198 women and 44 men) who had unilateral (51%) or bilateral (49%) temporomandibular joint internal derangement. They were divided into the following catergories: (1) disk displacement with reduction; (2) disk displacement without reduction; (3) "stuck" disk; (4) degenerative arthrosis with or without one of the above; and (5) normal temporomandibular
signficant difference in te distribution of disorders on a unilateral or bilateral basis or in the prevalence of disorders in fight versus left joints. Based on the high ocurrence of matching true-negative data, this study showed a highly statistically significant correlation between the magnetic resonance findings and the clinical data for all categories of derangement. Despite this high correlation, the magnetic resonance imaging and clinical diagnoses matched exactly in only 287 of the 484 joints studies. There was only partial agreement in the remaining 197 joints. The best clinical diagnosis in relation to the magnetic resonance findings was observed in teh arthrosis category followed by the categories of normal joint, disk displacement with reduction, stuck disk, and disk displacement without reduction, in descending order. This study strongly suggests that degenerative arthrosis is a result of a long-term displaced disk. The clinical examination alone did not correctly indicate all teh structural defects: therefore it is insufficient for determining the status of the joint. Alex Jacobson
The Evaluation of the Orthopedic Appliances by Using Standard Growth Curves of Maxilla and Mandible Keio Kusumoto, Koshi Sato, and Hideo Mitani J Jpn Orthod Soc 1996;55(4):311-21