Masticatory Muscles Activities in Temporomandibular Joint Internal Derangement PDF Download
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Author: Chantal M. Lafrenière
Publisher: National Library of Canada = Bibliothèque nationale du Canada
ISBN:
Category : Masticatory muscles
Languages : en
Pages : 220
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Book Description
Intramuscular EMG of the lateral pterygoid muscles, surface EMG of the temporalis and masseter muscles, electrogoniometry and force measurements of the TMJ were synchronously used to investigate the biomechanical role of the two portions of the lateral pterygoid muscle in relation to internal derangement (ID) of the temporomandibular joint (TMJ). This study dealt with the EMG analysis of five static conditions: resting, resisted protraction, maximum voluntary contraction (MVC) in opening, in molar and incisor clenching of TMJ ID and control subjects. The analysis of variance results of the integrated linear envelop (LE) EMG showed no significant differences between the two groups. The integrated LE EMG of the SLP was significantly lower in the TMJ group during molar clenching (104$\mu$V $\pm$ 60.0 over 159$\mu$V $\pm$ 68.8 for a p =.020). The SLP seemed to have lost its discal stabilizing function during clenching. The integrated LE EMG signals of the ILP were significantly higher in the TMJ ID group during rest, resisted protraction and incisor clenching (p =.029, p =.046, p =.031 respectively). The ILP muscle has probably adapted to control the inner joint instability while continuing its own actions. The results of the isometric forces showed that TMJ ID subjects exhibited significantly lower molar bite forces (297.1N over 419N, p =.042) confirming that they have less muscle strength and tissue tolerance than subjects with healthy masticatory muscle system. Incisor bite forces, however, showed a tendency to be higher in the TMJ ID group (233N over 180.5N, p =.168), possibly resulting from the training of a protracted bite and/or hyperactivity of the ILP associated with ID. Therefore a neuromuscular adaptation could be occurring in TMJ ID masticatory system affecting muscular actions and forces. (Abstract shortened by UMI.).
Author: Chantal M. Lafrenière
Publisher: National Library of Canada = Bibliothèque nationale du Canada
ISBN:
Category : Masticatory muscles
Languages : en
Pages : 220
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Book Description
Intramuscular EMG of the lateral pterygoid muscles, surface EMG of the temporalis and masseter muscles, electrogoniometry and force measurements of the TMJ were synchronously used to investigate the biomechanical role of the two portions of the lateral pterygoid muscle in relation to internal derangement (ID) of the temporomandibular joint (TMJ). This study dealt with the EMG analysis of five static conditions: resting, resisted protraction, maximum voluntary contraction (MVC) in opening, in molar and incisor clenching of TMJ ID and control subjects. The analysis of variance results of the integrated linear envelop (LE) EMG showed no significant differences between the two groups. The integrated LE EMG of the SLP was significantly lower in the TMJ group during molar clenching (104$\mu$V $\pm$ 60.0 over 159$\mu$V $\pm$ 68.8 for a p =.020). The SLP seemed to have lost its discal stabilizing function during clenching. The integrated LE EMG signals of the ILP were significantly higher in the TMJ ID group during rest, resisted protraction and incisor clenching (p =.029, p =.046, p =.031 respectively). The ILP muscle has probably adapted to control the inner joint instability while continuing its own actions. The results of the isometric forces showed that TMJ ID subjects exhibited significantly lower molar bite forces (297.1N over 419N, p =.042) confirming that they have less muscle strength and tissue tolerance than subjects with healthy masticatory muscle system. Incisor bite forces, however, showed a tendency to be higher in the TMJ ID group (233N over 180.5N, p =.168), possibly resulting from the training of a protracted bite and/or hyperactivity of the ILP associated with ID. Therefore a neuromuscular adaptation could be occurring in TMJ ID masticatory system affecting muscular actions and forces. (Abstract shortened by UMI.).
Author: George Albert Zarb
Publisher: Mosby
ISBN:
Category : Medical
Languages : en
Pages : 632
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Book Description
Author: S. Thaddeus Connelly
Publisher: Springer
ISBN: 331999915X
Category : Medical
Languages : en
Pages : 232
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Book Description
This book is a comprehensive, state of the art guide to the contemporary diagnosis of temporomandibular disorders (TMDs) that will help to compensate for the frequent lack of experience and inadequate training among health professionals who encounter patients with jaw joint problems. The opening section describes the whole patient philosophy essential for treatment success, examines ethical and legal considerations, and discusses all aspects of anatomy. Pathophysiology, clinical assessment, and imaging evaluation, including by means of modern MR imaging and CBCT, are then considered in detail. Finally, the diagnostic criteria for the full range of TMDs are thoroughly explained and the urgent need to appreciate temporomandibular disorders as the chronic pain conditions they are is addressed. Complementary volumes are devoted to non-surgical treatment of TMDs and to total temporomandibular joint replacement and other surgical procedures, respectively. Each book will be of high value for the multidisciplinary team necessary for successful management of TMDs, including dentists, surgeons, primary care doctors, pain doctors, and allied health professionals.
Author: Henry A. Gremillion
Publisher: Springer
ISBN: 3319572474
Category : Medical
Languages : en
Pages : 218
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Book Description
This book acquaints the reader with the basic science principles needed in order to understand temporomandibular disorders (TMDs) with a view to helping practitioners manage individuals with TMDs in accordance with the tenets of evidence-based dental medicine. The opening chapters provide essential information on the embryology, anatomy, and physiology of the masticatory system, which includes both myogenous and arthrogenous anatomic structures. Using this knowledge as a foundation, the reader will be better prepared to grasp the function and, ultimately, the dysfunction of masticatory muscles and the temporomandibular joint, both of which are addressed in detail. The book’s final section is exclusively devoted to management principles and includes a chapter on psychosocial considerations. By following a translational approach to evidence-based practice measures, as outlined in this book, the clinician will be excellently positioned to choose appropriate interventions on a case-specific basis.
Author: Welden E. Bell
Publisher: CRC Press
ISBN:
Category : Medical
Languages : en
Pages : 424
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Book Description
Author: Yusuf Emes
Publisher: BoD – Books on Demand
ISBN: 9535138618
Category : Medical
Languages : en
Pages : 210
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Book Description
Dental practitioners face a large number of patients seeking help for pain and loss of function in their temporomandibular joint and related structures. This book consists of eight chapters by authors who would like to share their experiences and researches on pathological conditions related to the temporomandibular joint. The chapters mainly focus on disorders, diseases, and entities while shedding light on the diagnostic methods and management modalities.
Author: Bernard George Sarnat
Publisher:
ISBN:
Category : Medical
Languages : en
Pages : 536
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Book Description
This is the standard TMJ/Oral Surgery reference! Two distinguished editors combine their knowledge and that of their contributing authors to produce an authoritative TMJ reference based on sound scientific principles.
Author: Richard E. Coy
Publisher:
ISBN:
Category : Temporomandibular joint
Languages : en
Pages : 240
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Book Description
Author: Steven L. Kraus
Publisher:
ISBN:
Category : Medical
Languages : en
Pages : 512
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Book Description
A revised and reorganized edition of this text with emphasis on a broader approach. Includes all disciplines that work with these disorders including: physical therapists; dentists; and manual therapists. It also contains new chapters on: diagnostic tests; radiology; arthroscopy; postsurgical PT protocols; continuous passive motion; and medical management.
Author: National Academies of Sciences, Engineering, and Medicine
Publisher: National Academies Press
ISBN: 0309670489
Category : Medical
Languages : en
Pages : 427
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Book Description
Temporomandibular disorders (TMDs), are a set of more than 30 health disorders associated with both the temporomandibular joints and the muscles and tissues of the jaw. TMDs have a range of causes and often co-occur with a number of overlapping medical conditions, including headaches, fibromyalgia, back pain and irritable bowel syndrome. TMDs can be transient or long-lasting and may be associated with problems that range from an occasional click of the jaw to severe chronic pain involving the entire orofacial region. Everyday activities, including eating and talking, are often difficult for people with TMDs, and many of them suffer with severe chronic pain due to this condition. Common social activities that most people take for granted, such as smiling, laughing, and kissing, can become unbearable. This dysfunction and pain, and its associated suffering, take a terrible toll on affected individuals, their families, and their friends. Individuals with TMDs often feel stigmatized and invalidated in their experiences by their family, friends, and, often, the health care community. Misjudgments and a failure to understand the nature and depths of TMDs can have severe consequences - more pain and more suffering - for individuals, their families and our society. Temporomandibular Disorders: Priorities for Research and Care calls on a number of stakeholders - across medicine, dentistry, and other fields - to improve the health and well-being of individuals with a TMD. This report addresses the current state of knowledge regarding TMD research, education and training, safety and efficacy of clinical treatments of TMDs, and burden and costs associated with TMDs. The recommendations of Temporomandibular Disorders focus on the actions that many organizations and agencies should take to improve TMD research and care and improve the overall health and well-being of individuals with a TMD.
