scholarly journals Vibration analysis of temporomandibular joints with internal derangements during maximal opening and closing movement.

1994 ◽  
Vol 1 (1) ◽  
pp. 209-215
Author(s):  
Shoichi Ishigaki ◽  
Russell W. Bessette ◽  
Takao Maruyama
Keyword(s):  
Vibration Analysis ◽  
Temporomandibular Joints ◽  
Maximal Opening ◽  
Opening And Closing

Vibration Analysis of the Temporomandibular Joints with Degenerative Joint Disease

CRANIO® ◽  
1993 ◽  
Vol 11 (4) ◽  
pp. 276-283 ◽  
Author(s):  
Shoichi Ishigaki ◽  
Russell W. Bessette ◽  
Takao Maruyama
Keyword(s):  
Vibration Analysis ◽  
Degenerative Joint Disease ◽  
Joint Disease ◽  
Temporomandibular Joints

Joint Vibration Analysis (JVA)

2017 ◽  
pp. 876-931 ◽  
Author(s):  
Ray M. Becker, DDS, FAGD
Keyword(s):  
Temporomandibular Joint ◽  
Vibration Analysis ◽  
Pathological Changes ◽  
Mandibular Movement ◽  
Disease States ◽  
Joint Pathology ◽  
Temporomandibular Joints ◽  
Structural Breakdown ◽  
Joint Vibration Analysis ◽  
Joint Vibration

This chapter describes Joint Vibration Analysis (JVA) technology that assesses pathological changes that can occur within the Temporomandibular joints. Joint Vibration Analysis (JVA) uses tissue accelerometers to objectively capture vibrations given off by structurally compromised internal TM Joint anatomy. The structural breakdown leads to altered mandibular movement patterns during chewing function. Different attributes of representative JVA vibrations have been shown to indicate the presence of various disease states often seen within the Temporomandibular Joint complex. After being recorded, the JVA software displays the various vibration waveforms for clinician analysis to determine the specific internal derangement present. This chapter provides an overview of the various vibratory waveforms that indicate TM Joint pathology and illustrates the utility of Joint Vibration Analysis as a Temporomandibular Joint diagnostic adjunct.

Comparison of stiffness and interface pressure during rest and exercise among various arm sleeves

2010 ◽  
Vol 25 (4) ◽  
pp. 196-200 ◽  
Author(s):  
M Hirai ◽  
K Niimi ◽  
H Iwata ◽  
I Sugimoto ◽  
H Ishibashi ◽  
...  
Keyword(s):  
Pressure Difference ◽  
Pressure Transducer ◽  
Pressure Amplitude ◽  
Interface Pressure ◽  
Maximal Opening ◽  
High Level ◽  
Opening And Closing ◽  
Contraction And Relaxation ◽  
Rest And Exercise

Objectives To compare the interface pressure during rest and exercise among various kinds of arm sleeves. Methods The interface pressure underneath nine different arm sleeves was measured during 10 maximal opening and closing movements of fingers using a pressure transducer (Air Pack Type Analyser) in 16 healthy volunteers. Furthermore, in order to evaluate the characteristics of each arm sleeve, the extensibility, stiffness and thickness were determined in vitro by several apparatuses. Results There was a significant correlation between stiffness and extensibility. The stiffness was significantly correlated with the pressure difference between muscle contraction and relaxation during exercise. The higher the value of stiffness, the greater the pressure amplitude during exercise. Conclusion Short-stretch arm sleeves characterized with a high level stiffness, including thick round- and flat-knitted arm sleeves, are more beneficial for the augmentation of muscle pumping than long-stretch arm sleeves, in the same way as short-stretch bandages or stockings applied to the leg.

Magnetization Transfer Contrast on Gradient Echo MR Imaging of the Temporomandibular Joint

1995 ◽  
Vol 36 (3) ◽  
pp. 295-299 ◽  
Author(s):  
M. Niitsu ◽  
H. Hirohata ◽  
H. Yoshioka ◽  
I. Anno ◽  
N. G. Campeau ◽  
...  
Keyword(s):  
Magnetization Transfer ◽  
Mouth Opening ◽  
Receiver Coil ◽  
Gradient Echo ◽  
Magnetization Transfer Contrast ◽  
Signal Suppression ◽  
Temporomandibular Joints ◽  
Opening And Closing ◽  
Sequential Images ◽  
Significant Superiority

Thirty-nine temporomandibular joints (TMJ) from 20 patients with suspected internal derangements were imaged by a 1.5 T MR imager. The on-resonance binomial magnetization transfer contrast (MTC) pulse was applied to gradient echo images with a dual receiver coil (9 s/section). With the use of an opening device, a series of sequential images were obtained at increments of mouth opening and closing. The tissue signal intensities with (Ms) and without (Mo) MTC were measured and subjective image analysis was performed. Compared with the standard images, MTC technique provided selective signal suppression of disks. The average of Ms/Mo ratio of the disks (0.56) was lower than that of the retrodiskal pad (0.79) and of the effusion (0.89). With MTC technique, fluid conspicuity was superior to standard image. However, no significant superiority was found in disk definition subjectively.

Vibration analysis of the temporomandibular joints with meniscal displacement with and without reduction

CRANIO® ◽  
1993 ◽  
Vol 11 (3) ◽  
pp. 192-201 ◽  
Author(s):  
Shoichi Ishigaki ◽  
Russell W. Bessette ◽  
Takao Maruyama
Keyword(s):  
Vibration Analysis ◽  
Temporomandibular Joints

scholarly journals Efficiency of treatment of patients with muscular and joint dysfunction of the temporomandibular joints

2020 ◽  
Vol 86 (1) ◽  
pp. 94-102
Author(s):  
T. Kostiuk ◽  
A. Kaniura
Keyword(s):  
Temporomandibular Joint ◽  
Sagittal Plane ◽  
Muscle Relaxation ◽  
Pain Syndrome ◽  
Temporomandibular Joint Dysfunction ◽  
Occlusal Splints ◽  
Temporomandibular Joints ◽  
Number Of Patients ◽  
Before And After ◽  
Opening And Closing

The prevalence of dysfunction of the temporomandibular joint, especially in people aged 18-60 years, reached 95-98 % among all dental applications. The course of the pathology is usually hidden, with periodic recurrences and has a long nature, which is accompanied by a decrease in overall quality of life. Treatment of this pathology of the temporomandibular joint is a set of complex therapeutic, orthopedic and psychological measures. The literature describes many ways to treat temporomandibular joint dysfunction, one of the modem ones is the use of occlusal splints, which allow to change the position of the mandible, diagnose and eliminate musculoskeletal dysfunction of the temporomandibular joint. The aim of the study was to determine the effectiveness of treatment of musculoskeletal dysfunction of the temporomandibular joint with occlusal splints according to axiography. 274 patients aged 18 to 65 years were diagnosed with temporomandibular joint pain syndrome before and after treatment. All patients with signs of temporomandibular joint dysfunction before treatment had a violation of the trajectory of the mandible (deviation is 68.7 %, dyslexia is 31.3 %). When opening and closing the mouth, asymmetrical shifts of the lower jaw to the sides of more than 2 mm (deviation from the midline is more than 2 mm) were observed. After treatment with occlusal splints there was an improvement in the trajectory of opening and closing the mouth: the number of patients with a violation of the trajectory decreased by 89.1 %, and the displacement of the mandible during opening and closing the mouth in 92.4 % of patients decreased on average to 0.9 mm. When analyzing the movements of the mandible in the sagittal plane in 79 % of cases, deviations of the trajectory of the mandible were detected. After treatment with occlusive muscle relaxation splints, elimination of violations of the trajectory of the mandible in the transverse plane was noted in 93.4 % of cases, reduction of displacement to 0.9 mm in 78.1 % of patients. The trajectory of the mandible in the sagittal plane improved in 80.1 % of patients, normalization of the position of the mandible relative to the neuromuscular trajectory was achieved in 93.4 % of clinical cases. According to the analysis of parameters, such treatment should be considered effective. Keywords: musculoskeletal dysfunction, temporomandibular joint, clinical dysfunction index, axiography, sagittal articular pathway angle, sagittal incisor pathway angle, Bennett’s angle (movement), duration.

scholarly journals A Clinical Jaw Movement Training Robot for Mouth Opening/Closing and Lateral Movement Training

2004 ◽  
Vol 16 (6) ◽  
pp. 579-586 ◽  
Author(s):  
Akihisa Okino ◽  
◽  
Hideaki Takanobu ◽  
Atsuo Takanishi ◽  
Kayoko Ohtsuki ◽  
...  
Keyword(s):  
Parallel Mechanism ◽  
Degrees Of Freedom ◽  
Mouth Opening ◽  
Lateral Movement ◽  
Jaw Movement ◽  
Movement Training ◽  
Temporomandibular Joints ◽  
Jaw Opening ◽  
Opening And Closing ◽  
Mandibular Joints

This paper discusses a jaw movement training robot implementing a 6-DOF (degrees of freedom) parallel mechanism, and its application to mouth opening and closing and lateral movement training. Temporomandibular joints (TMJ) syndrome prevents patients from opening their mouths or moving their jaws easily due to problems with mandibular joints, mastication muscles, and other organs involved in food chewing. Conventional therapy involves simple mouth opening apparatuses, although individual techniques vary with the physician. We developed and improved a jaw movement training robot that aids jaw opening and closing and lateral jaw movement training. This system consists of a 6-DOF slave manipulator representing a patient manipulator and a 2-DOF or 3-DOF master manipulator representing the doctor command manipulator.

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