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Orofacial Pain

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https://www.readbyqxmd.com/read/28097463/neurokinin-1-receptor-immunopositive-neurons-in-the-medullary-dorsal-horn-provide-collateral-axons-to-both-the-thalamus-and-parabrachial-nucleus-in-rats
#1
Xu Li, Shun-Nan Ge, Yang Li, Han-Tao Wang
It has been suggested that the trigemino-thalamic and trigemino-parabrachial projection neurons in the medullary dorsal horn (MDH) are highly implicated in the sensory-discriminative and emotional/affective aspects of orofacial pain, respectively. In previous studies, some neurons were reported to send projections to both the thalamus and parabrachial nucleus by way of collaterals in the MDH. However, little is known about the chemoarchitecture of this group of neurons. Thus, in the present study, we determined whether the neurokinin-1 (NK-1) receptor, which is crucial for primary orofacial pain signaling, was expressed in MDH neurons co-innervating the thalamus and parabrachial nucleus...
January 17, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/28087952/an-observational-study-of-trigeminal-neuralgia-patients-taking-carbamazepine-during-the-fasting-month-of-ramadan
#2
A J Ajura, S H Lau, S Nur Suffia
INTRODUCTION: Trigeminal neuralgia is an agonising orofacial pain affecting unilaterally the distribution of the trigeminal nerve and it usually occurs in the middle and older age groups. Carbamazepine which is an anti-neuralgic as well as an anti-convulsant medication is the first line drug for treatment of trigeminal neuralgia. It is commonly taken as one tablet (200 mg) three times a day. MATERIALS AND METHODS: This is an observational study carried out from April to September 2014 to determine how Muslim patients on carbamazepine treatment for trigeminal neuralgia cope with their neuralgic pain...
December 2016: Medical Journal of Malaysia
https://www.readbyqxmd.com/read/28075519/an-update-of-management-of-insomnia-in-patients-with-chronic-orofacial-pain
#3
REVIEW
Galit Almoznino, Yaron Haviv, Yair Sharav, Rafael Benoliel
In this review we discuss the management of chronic orofacial pain (COFP) patients with insomnia. Diagnostic work-up and follow-up routines of COFP patients should include assessment of sleep problems. Management is based on a multidisciplinary approach, addressing the factors that modulate the pain experience as well as insomnia and including both non-pharmacological and pharmacological modalities. Parallel to treatment, patients should receive therapy for co-morbid medical and psychiatric disorders, and possible substance abuse that may be that may trigger or worsen the COFP and/or their insomnia...
January 11, 2017: Oral Diseases
https://www.readbyqxmd.com/read/28072605/oxytocin-alleviates-orofacial-mechanical-hypersensitivity-associated-with-infraorbital-nerve-injury-via-vasopressin-1a-receptors-of-the-rat-trigeminal-ganglia
#4
Asako Kubo, Masamichi Shinoda, Ayano Katagiri, Mamoru Takeda, Tatsuro Suzuki, Junichi Asaka, David C Yeomans, Koichi Iwata
Oxytocin (OXT) is a neuropeptide hormone synthesized and secreted by hypothalamic neurons, and has been reported to play a significant role in pain modulation. However, the mechanisms underlying OXT's antinociceptive effect on neuropathic pain are not fully understood. In the present study, we examined the peripheral effect of OXT on mechanical hypersensitivity induced by partial ligation of the infraorbital nerve (PNL) in rats. Mechanical hypersensitivity in the whisker pad skin following PNL was attenuated by the direct administration of OXT into the trigeminal ganglion (TG)...
January 7, 2017: Pain
https://www.readbyqxmd.com/read/28068790/temporomandibular-disorders-old-ideas-and-new-concepts
#5
Thomas List, Rigmor Højland Jensen
Background Temporomandibular disorders (TMD) is an umbrella term for pain and dysfunction involving the masticatory muscles and the temporomandibular joints (TMJs). TMD is the most common orofacial pain condition. Its prominent features include regional pain in the face and preauricular area, limitations in jaw movement, and noise from the TMJs during jaw movements. TMD affects up to 15% of adults and 7% of adolescents. Chronic pain is the overwhelming reason that patients with TMD seek treatment. TMD can associate with impaired general health, depression, and other psychological disabilities, and may affect the quality of life of the patient...
January 1, 2017: Cephalalgia: An International Journal of Headache
https://www.readbyqxmd.com/read/28066142/participation-of-central-gabaa-receptors-in-the-trigeminal-processing-of-mechanical-allodynia-in-rats
#6
Min Ji Kim, Young Hong Park, Kui Ye Yang, Jin Sook Ju, Yong Chul Bae, Seong Kyu Han, Dong Kuk Ahn
Here we investigated the central processing mechanisms of mechanical allodynia and found a direct excitatory link with low-threshold input to nociceptive neurons. Experiments were performed on male Sprague-Dawley rats weighing 230-280 g. Subcutaneous injection of interleukin 1 beta (IL-1β) (1 ng/10 µL) was used to produce mechanical allodynia and thermal hyperalgesia. Intracisternal administration of bicuculline, a gamma aminobutyric acid A (GABAA) receptor antagonist, produced mechanical allodynia in the orofacial area under normal conditions...
January 2017: Korean Journal of Physiology & Pharmacology
https://www.readbyqxmd.com/read/28064555/a-population-based-study-on-the-impact-of-orofacial-dysfunction-on-oral-health-related-quality-of-life-among-brazilian-schoolchildren
#7
Fernanda Sardenberg, Bianca Lopes Cavalcante-Leão, Sara Regina Barancelli Todero, Fernanda Morais Ferreira, Nelson Luis Barbosa Rebellato, Fabian Calixto Fraiz
OBJECTIVE: The aim of the present study was to assess the impact of orofacial dysfunction on oral health-related quality of life (OHRQoL) among Brazilian schoolchildren. MATERIAL AND METHODS: A population-based study was conducted with 531 children aged eight to 10 years at schools in the city of Campo Magro, Brazil. The Brazilian version of the Child Perceptions Questionnaire (CPQ8-10) was the outcome variable used to measure the impact on OHRQoL. The main independent variable was orofacial function, which was diagnosed using the Nordic Orofacial Test-Screening (NOT-S)...
January 8, 2017: Acta Odontologica Scandinavica
https://www.readbyqxmd.com/read/28060782/high-density-emg-reveals-novel-evidence-of-altered-masseter-muscle-activity-during-symmetrical-and-asymmetrical-bilateral-jaw-clenching-tasks-in-people-with-chronic-nonspecific-neck-pain
#8
Marco Testa, Tommaso Geri, Leonardo Gizzi, Deborah Falla
OBJECTIVES: To characterize the distribution of masseter muscle activity and force control during bilateral jaw clenching tasks in people with chronic nonspecific neck pain, without an associated temporomandibular disorder. METHODS: Twelve volunteers with nonspecific neck pain and 12 age-matched and sex-matched healthy individuals participated. Submaximal symmetrical and asymmetrical bilateral jaw clenching was performed with and without visual feedback of force...
February 2017: Clinical Journal of Pain
https://www.readbyqxmd.com/read/28054261/effectiveness-of-low-level-laser-therapy-on-pain-intensity-pressure-pain-threshold-and-sf-mpq-indexes-of-women-with-myofascial-pain
#9
Laís Valencise Magri, Vinícius Almeida Carvalho, Flávia Cássia Cabral Rodrigues, César Bataglion, Christie Ramos Andrade Leite-Panissi
Women with temporomandibular disorders (TMD) frequently report pain areas in body regions. This process is associated with central sensitization phenomena, present in chronic pain. The low-level laser therapy (LLLT) has been reported as a therapeutic option for the painful TMD treatment. The aim of this study was to analyze the effect of LLLT on pain intensity (visual analogue scale, VAS), pain sensitivity in orofacial and corporal points (pressure pain threshold, PPT), and on Short Form-McGill Pain Questionnaire (SF-MPQ) indexes of women with myofascial pain (subtype of muscle TMD)...
January 4, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28045322/orofacial-granulomatosis-as-early-manifestation-of-crohn-s-disease-report-of-a-case-in-a-paediatric-patient
#10
A Sarra, N G Nikitakis, A Daskalopoulos, G Chouliaras, A Sklavounou-Andrikopoulou, K Athanasaki
BACKGROUND: Orofacial granulomatosis (OFG) is a controversial entity mainly characterised by recurrent or permanent soft tissue swelling of sudden onset in the orofacial area with a histologic appearance of granulomatous inflammation. Differential diagnosis includes local diseases and systemic conditions, such as Crohn's disease (CD). A case of OFG in a paediatric patient is reported here, focusing on the clinical features, diagnostic procedures, treatment and long-term outcome. CASE REPORT: A 7 year-old boy presented with persistent and prominent lip swelling and painful oral mucosa lesions of six months duration...
December 2016: European Journal of Paediatric Dentistry: Official Journal of European Academy of Paediatric Dentistry
https://www.readbyqxmd.com/read/28035308/incidental-finding-of-an-extensive-oropharyngeal-mass-in-magnetic-resonance-imaging-of-a-patient-with-temporomandibular-disorder-a-case-report
#11
Temitope T Omolehinwa, Mel Mupparapu, Sunday O Akintoye
In this report, we describe the incidental finding of an oropharyngeal mass in a patient who presented with a chief complaint of temporomandibular pain. The patient was initially evaluated by an otorhinolaryngologist for complaints of headaches, earache, and sinus congestion. Due to worsening headaches and trismus, he was further referred for the management of temporomandibular disorder. The clinical evaluation was uneventful except for limited mouth opening (trismus). An advanced radiological evaluation using magnetic resonance imaging revealed a mass in the nasopharyngeal/oropharyngeal region...
December 2016: Imaging Science in Dentistry
https://www.readbyqxmd.com/read/28034986/influence-of-sexual-hormones-on-neural-orofacial-perception
#12
Bruna Alves, Flavia Ibuki, Alyne Simões Gonçalves, Manoel Jacobsen Teixeira, Silvia Regina Dowgan Tesseroli De Siqueira
OBJECTIVE  : To investigate the trigeminal somatosensory (thermal, pain, tactile, vibratory, and electric), gustative (salty, bitter, sweet, sour), and olfactory thresholds in healthy women during the menstrual cycle and investigate any association with estradiol and progesterone levels in saliva. METHODS : We examined/tested 39 women between age 19 and 47 years and with regular menstrual cycles and no comorbidities. All women were informed about the purposes of the study, and only those who signed the informed consent were included...
December 29, 2016: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/28031603/blended-learning-for-reinforcing-dental-pharmacology-in-the-clinical-years-a-qualitative-analysis
#13
Prashanti Eachempati, K S Kiran Kumar, K N Sumanth
OBJECTIVES: Blended learning has become the method of choice in educational institutions because of its systematic integration of traditional classroom teaching and online components. This study aims to analyze student's reflection regarding blended learning in dental pharmacology. SUBJECTS AND METHODS: A cross-sectional study was conducted in Faculty of Dentistry, Melaka-Manipal Medical College among 3(rd) and 4(th) year BDS students. A total of 145 dental students, who consented, participate in the study...
October 2016: Indian Journal of Pharmacology
https://www.readbyqxmd.com/read/28026014/characterization-of-the-nociceptive-effect-of-carrageenan-masseter-vs-gastrocnemius
#14
Ana Bagüés, M A Isabel Martín-Fontelles, Jesús Esteban-Hernández, Eva M A Sánchez-Robles
INTRODUCTION: To better understand the pathophysiology of chronic muscle pain, there are multiple animal models that mimic different acute/chronic pain conditions, such as carrageenan injection. Our previous studies demonstrate differences between muscles of different innervation in acute pain. Now, we characterize the effect of carrageenan in 2 muscles, masseter (trigeminal innervation) and gastrocnemius (spinal innervation). METHODS: Carrageenan (3,6, and 9%) was injected into the masseter and gastrocnemius of rats...
December 27, 2016: Muscle & Nerve
https://www.readbyqxmd.com/read/28012558/obstructive-sleep-apnea-in-a-patient-with-orofacial-pain-secondary-to-cervical-fixation
#15
Veena Kanti, Melethu Krishnakumari Aparna
No abstract text is available yet for this article.
December 21, 2016: Journal of the American Dental Association
https://www.readbyqxmd.com/read/28002094/the-association-between-headaches-and-temporomandibular-disorders-is-confounded-by-bruxism-and-somatic-complaints
#16
Hedwig A van der Meer, Caroline M Speksnijder, Raoul Engelbert, Frank Lobbezoo, Maria W G Nijhuis-van der Sanden, Corine M Visscher
OBJECTIVES: The objective of this observational study was to establish the possible presence of confounders on the association between temporomandibular disorders (TMD) and headaches in a patient population from a TMD and Orofacial Pain Clinic. METHODS: Several subtypes of headaches were diagnosed: self-reported headache, (probable) migraine, (probable) tension-type headache (TTH), and secondary headache attributed to TMD. The presence of TMD was subdivided into two subtypes: painful TMD and function-related TMD...
December 19, 2016: Clinical Journal of Pain
https://www.readbyqxmd.com/read/28001273/effect-of-speech-language-therapy-after-low-level-laser-therapy-in-patients-with-tmd-a-descriptive-study
#17
Melissa de Oliveira Melchior, Bárbara Cristina Zanandréa Machado, Lais Valencise Magri, Marcelo Oliveira Mazzetto
Increased pain and/or discomfort during chewing, speaking, and swallowing have been commonly reported by patients with Temporomandibular Dysfunction (TMD). Speech-language pathology therapy (orofacial myofunctional therapy - OMT) has been proposed as part of the treatment for this condition; however, it is a modality that should be introduced when the TMD context and the pain are not accentuated, so that they do not prevent or hinder the performance of exercises. The aim of this study was to analyze the effect of OMT on the treatment of patients with TMD, according to the Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD), after analgesia with low-level laser therapy (LLLT), regarding orofacial myofunctional conditions (OMC) and the perception of TMD symptoms...
November 2016: CoDAS
https://www.readbyqxmd.com/read/27998753/effects-of-intra-hippocampal-microinjection-of-vitamin-b12-on-the-orofacial-pain-and-memory-impairments-induced-by-scopolamine-and-orofacial-pain-in-rats
#18
Amir Erfanparast, Esmaeal Tamaddonfard, Shaghayegh Nemati
In the present study, we investigated the effects of microinjection of vitamin B12 into the hippocampus on the orofacial pain and memory impairments induced by scopolamine and orofacial pain. In ketamine-xylazine anesthetized rats, the right and left sides of the dorsal hippocampus (CA1) were implanted with two guide cannulas. Orofacial pain was induced by subcutaneous injection of formalin (1.5%, 50μl) into the right vibrissa pad, and the durations of face rubbing were recorded at 3-min blocks for 45min. Morris water maze (MWM) was used for evaluation of learning and memory...
December 18, 2016: Physiology & Behavior
https://www.readbyqxmd.com/read/27987222/the-antinociceptive-effects-of-a-tapentadol-ketorolac-combination-in-a-mouse-model-of-trigeminal-pain-is-mediated-by-opioid-receptors-and-atp-sensitive-k-channels
#19
Israel Barreras-Espinoza, José Alberto Soto-Zambrano, Nicolás Serafín-Higuera, Ramón Zapata-Morales, Ángel Alonso-Castro, Ronell Bologna-Molina, Vinicio Granados-Soto, Mario A Isiordia-Espinoza
Preclinical Research The aim of the present study was to evaluate the antinoceptive interaction between the opioid analgesic, tapentadol, and the NSAID, ketorolac, in the mouse orofacial formalin test. Tapentadol or ketorolac were administered ip 15 min before orofacial formalin injection. The effect of the individual drugs was used to calculate their ED50 values and different proportions (tapentadol-ketorolac in 1:1, 3:1, and 1:3) were assayed in the orofacial test using isobolographic analysis and interaction index to evaluate the interaction between the drugs...
December 16, 2016: Drug Development Research
https://www.readbyqxmd.com/read/27986100/examining-the-sensitivity-and-specificity-of-2-screening-instruments-odontogenic-or-temporomandibular-disorder-pain
#20
Barbara Fonseca Alonso, Donald R Nixdorf, Sarah S Shueb, Mike T John, Alan S Law, Justin Durham
INTRODUCTION: Two groups of patients with orofacial pains that are clinically important to distinguish from each other are patients with odontogenic pain and temporomandibular disorder (TMD) pain. The aim of this study was to determine the sensitivity and specificity of 2 screening instruments in distinguishing between patients with these types of pain. METHODS: A convenience sample of patients seeking care at an endodontic clinic and an orofacial pain clinic were recruited...
January 2017: Journal of Endodontics
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