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Article
The Otological manifestation of temporomandibular disorders

Author: Mohammed Radef Dawood
Journal: Mustansiriya Medical Journal مجلة المستنصرية الطبية ISSN: 20701128 22274081 Year: 2013 Volume: 12 Issue: 1 Pages: 45-48
Publisher: Al-Mustansyriah University الجامعة المستنصرية

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Abstract

Aims: To detect the frequency of TMD, analyzing its symptoms, and to determine its otological manifestations as otalgia, tinnitus, ear fullness, and hearing impairment. Patients and Methods: During 4 months period, 350 patients visiting ENT department for their ear complaints, only 72 patients were selected and submitted to this study by filling the questionnaire regarding their symptoms of TMD and their otological complaints, followed by full ENT examination (there is normal otoscopic finding) and clinical examination of the temporomandibular joint (TMJ) and adjacent area. Results: Among 350 patients, 72 patients had TMD (20.5%), 44 male (61.1%) and 28 female (38.9%). Regarding the most common TMD symptom TMJ pain (48.6%) was commonest, followed by joint clicking sounds (23.6%), pain on masticatory muscles (18.1%), and limitation of jaw movement with or without jaw deviation (9.7%), while the most common ear symptom was otalgia (52.7%),followed by ear fullness (23.6%), tinnitus (22.2%), and hearing impairment (1.3%). Conclusions: High frequency rate of TMD, the most common TMD symptom was TMJ pain and the most common ear symptom was otalgia.

Keywords

TMD --- Otological manifestation --- TMJ


Article
The Design of a Tuned Mass Damper as a Vibration Absorber
تصميم مخمد الكتلة التوليفي كماص للأهتزاز

Author: Taghreed M. Mohammad Ridha
Journal: Engineering and Technology Journal مجلة الهندسة والتكنولوجيا ISSN: 16816900 24120758 Year: 2010 Volume: 28 Issue: 14 Pages: 4843-4852
Publisher: University of Technology الجامعة التكنولوجية

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Abstract

The protection of civil structures, including their material contents andhuman occupants, is without doubt a world-wide priority of most serious currentresearch. Such protection may range from reliable operation and comfort, on onehand, to serviceability on the other. Examples of such structures which leap toone’s mind include buildings, towers, and bridges. In like manner, events whichcause the need for such protective measures are environmental like earthquakesand winds, or moving loads like cars and pedestrians in the case of bridges. Theearthquake hazard is translated in severe vibrations for the structural systems. Inorder to handle this world wide problem auxiliary damping devices is added toabsorb those vibrations. One of the early used damping devices is the Tuned MassDamper (TMD) which is a passive system in that it absorbs the structural responsewithout adding an external control signal. In this work a case study of three storiesbuilding model excited by a simulated earthquake hazard is investigated versus theresponse of the same building supplied by a TMD.

أن حماية الهياكل المدنية و بضمنها مكوناتها المادية و مستخدميها من البشر يشكل من دون شك الأولوية في البحث العالمي في الوقت الحاضر. هذه الحماية تتدرج من الأداء الموثوق و المريح, من جهة, الى الناحية الخدمية من جهة أخرى. من امثلة الهياكل التي ترد للذهن هي البنايات و الأبراج و الجسور. وعلى نفس السياق الأحداث التي ُتسبب الحاجة إلى مثل هذا الإجراءات الوقائية بيئية مثل الزلازلِ والرياحِ، أَو أحمالَ متحركة مثل السياراتَ والمشاة فيحالة الجسور. إن خطر الزلزالَ متَرجم في الإهتزازات الحادة للأنظمة الهيكلية. لمعالجة هذاالخطر العالميِ ُتضافُ مخمدات مساعدة لامتصاص تلك الإهتزازات. أحد أوائل أدوات الأخماد الذي يعد نظام سلبي Tuned Mass Damper (TMD) المستعملة هو مخمدالكتلة التوليفي الفعالية كونه يمتص الأستجابة الهيكلية بدون الحاجة لإضافة إشارةَ سيطرة خارجية. في هذا العمل يتم دراسة نموذج بناية مؤلفة من ثلاثة طوابق تتعرض لأضطراب زلزالي تمثيلي . TMD ومقارنته بأستجابة نفس البناية بعد تجهيزها ب


Article
Assessment of cortisol as salivary psychological stress marker in relation to temporomandibular disorders among a sample of dental students

Authors: Sarmad Qays Ali سرمد قيس علي --- Raja Hadi رجاء هادي
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2015 Volume: 27 Issue: 2 Pages: 86-92
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: University dental students perceived a higher level of stress prior to the final exam associated with raisedsalivary cortisol levels which could be considered as a useful noninvasive biomarker for measuring acute stress. Usinga Helkimo anamnestic and clinical dysfunction scoring for temporomandibular disorders can give a better insightabout the association of this marker and temporomandibular joint disorders. The aim of this study was to evaluationlevel of salivary cortisol in stressor students with temporomandibular disorder and the relation between this marker inrelation to temporomandibular disorder severity. This might give a better understanding to the role of psychologicalstress as an etiological factor for developing temporomandibular joint problems.Materials and methods: A total eighty participants age between 20 to 24 were recruited for this study. Theparticipants were University dental students under graduate students at final examination period who wereexamined and gave saliva samples in final examination period. Salivary assay kits as cortisol was used to measurethose variables and a Helkimo anamnestic and clinical dysfunction scoring for TMD.Results: The group of participants with stress and temporomandibular disorder showed significantly higher levels ofsalivary cortisol than the control group, the salivary cortisol has statistically significant correlation with Helkimoanamnestic categories (Di-I mild, Di-II moderate and Di-III severe. Salivary cortisol levels show significant but weakassociation with two categories of clinical dysfunction criteria in Helkimo index system, which are Muscle pain andTMJ pain on palpation.Conclusion: This study demonstrated that University students perceived a high level of stress before the finalexamination. Salivary cortisol is the stress biomarker that is most often used to measure acute stress. Helkimoanamnestic and clinical dysfunction scoring criteria for still the pioneer for measuring a temporomandibular disorder


Article
The Relationship of Tempromandibular joint disorders with Bony Exostosis in the Oral Cavity

Authors: Dr. Thikra I .Hamad. B.D.S., M.Sc. Lecturer د. ذكرى حامد --- Dr. Intisar J .Ismail. B.D.S., M.Sc. Lecturer د. انتصار اسماعيل
Journal: MUSTANSIRIA DENTAL JOURNAL مجلة المستنصرية لطب الاسنان ISSN: 18138500 Year: 2009 Volume: 6 Issue: 2 Pages: 164-171
Publisher: Al-Mustansyriah University الجامعة المستنصرية

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Abstract

The temporomandibular joint (TMJ) may be affected by inflammatory, traumatic, infectious, congenital, and developmental, as seen in other joints. However, the most common affliction of the TMJ and masticatory apparatus is a group of functional disorders with associated pain that occurs predominantly in women and was previously known as the TMJ pain dysfunction syndrome. Since 1978, there have been substantial changes in the study of etiologic factors, pathophysiology, diagnosis, and management of what are now called temporomandibular disorders (TMD).(1)The general perception that all symptoms in the head, face, and jaw region without an identifiable cause constitute a "TMJ" problem is clearly unfounded.Although some oral lesions, such as torus palatinus and torus mandibularis are normal variants, but require prompt diagnosis and sometime treatment to reduce the potential for serious complication and enhance prosthodontic treatment. The purpose of this study is to inspect the relation of TMJ dysfunction syndrome to the presence of oral exostosis, and find the prevalence of torus palatinus (TP) and torus mandibularis (TM)The sample consisted of 932 teachers, 301 males and 631 females were examined for the presence of TMD, TP and / or TM. Analysis was carried out according to age, gender, TMJ dysfunction and the presence of TP and TM.Results indicated that 123(16.1%) had at least one symptoms of TMD, where as 49 (5.3%) had TP; and 67 (7.2) had TM. The male: female prevalence ratios of TP and TM were 1: 3.42 and 1: 1.81 respectively. The results revealed that significant relationship between TMD and tori, and increase in percentage of mandibular tori with the presence of TMJ dysfunctional syndrome more than maxillary tori were found.TP and TM were more frequent in females and there is significant relation between the TP and TM with presence of TMJ dysfunction syndrome ( P< 0.05 ) especially TM , the presence of TM might be useful to look for sign of dysfunction.(TP),

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