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Mandibular Disorders

Irena Mladenovic, Jelena Krunic, Gordana Supic, Ruzica Kozomara, Dejan Bokonjic, Nikola Stojanovic, Zvonko Magic
INTRODUCTION: The purpose of this study was to evaluate the associations of variability in pulp sensitivity with sex, psychosocial variables, the gene that encodes for the enzyme catechol-O-methyltransferase (COMT), and chronic painful conditions (temporomandibular disorders [TMDs]). METHODS: The study was composed of 97 subjects (68 women and 29 men aged 20-44 years). The electric (electric pulp tester) and cold (refrigerant spray) stimuli were performed on mandibular lateral incisors...
March 14, 2018: Journal of Endodontics
David Stevens, Rodrigo Tomazini Martins, Sutapa Mukherjee, Andrew Vakulin
Sleep-disordered breathing (SDB), encompassing both obstructive and central sleep apnea, is prevalent in at least 50% of stroke patients. Small studies have shown vast improvements in post-stroke functional recovery outcomes after the treatment of SDB by continuous positive airway pressure. However, compliance to this therapy is very poor in this complex patient group. There are alternative therapy options for SDB that may be more amenable for use in at least some post-stroke patients, including mandibular advancement, supine avoidance, and oxygen therapy...
2018: Frontiers in Surgery
Guan Yun Frances Wang, Xiang Qun Shi, Wenjia Wu, Maria Gueorguieva, Mu Yang, Ji Zhang
Temporomandibular disorder (TMD) is a set of heterogeneous musculoskeletal conditions involving the temporomandibular joint (TMJ) and/or the masticatory muscles. Up to 33% of the population has had at least one symptom of TMD with 5-10% of them requiring treatment. Common symptoms include limited jaw movement, joint sound, and pain in the orofacial area. Once TMD becomes chronic, it can be debilitating with comorbidities that greatly reduce one's overall quality of life. However, the underlying mechanism of TMD is unclear due to the multicausative nature of the disease...
March 12, 2018: Pain
Luz V Mendoza-García, Irene A Espinosa de Santillana, Victor Hernández Vidal
Objective To analyze the association between mandibular vertical asymmetry and the presence of TMD in adult patients. Methods This case-control study recruited patients from the orthodontic clinic at FEBUAP. Patients were classified on the basis of diagnostic criteria for temporomandibular disorders (DC/TMD). Panoramic radiographs were measured to determine mandibular vertical asymmetry indices according to criteria described by Kjellberg and Habets. Both methods (DC/TMD and index criteria) were standardized a priori...
March 13, 2018: Cranio: the Journal of Craniomandibular Practice
Tao Ye, Dongliang Sun, Tong Mu, Yi Chu, Hui Miao, Mian Zhang, Hongxu Yang, Qian Liu, Lei Lu, Xianghui Xing, Shibin Yu
The striking predilection of temporomandibular disorders (TMD) in women, especially during gonad-intact puberty or reproductive years, indicates that oestrogen plays an important role in the progression of TMD, but the underlying mechanism remains unclear. In this study, unilateral anterior crossbite (UAC) was used to create temporomandibular joint osteoarthritis (TMJ OA) models in rats, while 17β-estradiol (E2 ) injections were applied to mimic patients with high-physiological levels of oestrogen. Micro-CT scanning, histological staining and real-time PCR assays were preformed to observe the degenerative changes in the mandibular condylar cartilage and subchondral bone...
March 9, 2018: Bone
Jéssica Araújo Figueira, Fábio Roberto de Souza Batista, Karina Rosso, Vanessa Cristina Veltrini, Angelo José Pavan
Gorlin-Goltz syndrome (GGS), also known as nevoid basal cell carcinoma syndrome, is an autosomal dominant inherited disorder with high penetrance and variable expressivity. The classic triad originally described by Gorlin and Goltz in 1960 is composed of multiple nevoid basal cell carcinomas (NBCCs), odontogenic keratocysts (OKCs) in the jaws and bifid ribs. in 1977, this triad was modified by Rayner et al, and to GGS diagnosis, the OKCs had to appear in combination with calcification of the cerebellar falx or palmar and plantar pits...
March 8, 2018: Journal of Craniofacial Surgery
K H Bendixen, H Gjørup, L Baad-Hansen, J Dahl Hald, T Harsløf, M H Schmidt, B L Langdahl, D Haubek
BACKGROUND: Osteogenesis Imperfecta (OI) is characterized by a number of deviations in the orofacial region. The aims of the present study were to investigate the occurrence of temporomandibular disorders, to evaluate the psychosocial status, and to assess the dental occlusion in a population of adult OI patients. METHODS: Participants (n = 75) were classified with mild OI, type I (n = 56), or moderate-severe OI, type III and IV (n = 19). OI patients were examined according to the Research Diagnostic Criteria for Temporomandibular Disorders (axis I and II)...
March 7, 2018: BMC Oral Health
Aviv Ouanounou, Michael Goldberg, Daniel A Haas
Temporomandibular disorder (TMD) is a collective term that includes disorders of the temporomandibular joint (TMJ) and of the masticatory muscles and their associated structures. TMDs are characterized by pain, joint sounds and restricted mandibular movement, and drugs are widely used in the management of that pain. Pharmacological agents commonly used for the treatment of TMDs include non-steroidal anti-inflammatory drugs (NSAIDs), opioids, corticosteroids, muscle relaxants, antidepressants, anticonvulsants and benzodiazepines...
July 2017: Journal—Canadian Dental Association, Journal de L'Association Dentaire Canadienne
E Pollaris, M Haspeslagh, G Van den Wyngaert, L Vlaminck
BACKGROUND: Fissures of the occlusal surface of equine cheek teeth are commonly encountered during oral examination but their aetiology is unknown. OBJECTIVES: To examine the prevalence and characteristics of occlusal fissures in cadaver teeth. It is hypothesised that their prevalence is influenced by masticatory forces. Consequently, their possible association with wear disorders and occlusal angles were examined. STUDY DESIGN: Cross-sectional survey...
March 6, 2018: Equine Veterinary Journal
Rodrigo Fariña, Loreto Canto, Renato Gunckel, Juan Pablo Alister, Francisca Uribe
: Temporomandibular joint ankylosis, according to age of onset, causes severe functional and morphological disorders, as well as stunted craniofacial growth and development.The primary goal of treatment is to resolve the functional and morphological disorders. METHOD: Pre- and posttreatment clinical and cephalometric registries were conducted in 15 patients with temporomandibular joint ankylosis over a 10-year period (2002-2012). All the patients underwent complete removal of the ankylotic block, gap arthroplasty, and ipsilateral coronoidectomy...
March 2018: Journal of Craniofacial Surgery
Stella Yue Sun, Woon Chee Yeo, Andrew Ban Guan Tay, Donald Tiang Hwee Tan, Danny Ben Poon Tan
PURPOSE: Osteoodontokeratoprosthesis (OOKP) surgery is used to restore vision in end-stage corneal disorders, where an autogenous tooth supporting an optical cylinder is implanted through the cornea under a buccal mucosal graft. The ideal tooth for OOKP is a healthy single-rooted permanent tooth with sufficient buccolingual/palatal root diameter to accommodate an optical cylinder. The aim of this study was to determine the buccolingual/palatal diameters of canine and premolar roots in Chinese, for selection of teeth for OOKP surgery...
March 6, 2018: Asia-Pacific Journal of Ophthalmology
Sumanth Kumbargere Nagraj, Eachempati Prashanti, Himanshi Aggarwal, Ashok Lingappa, Murugan S Muthu, Salian Kiran Kumar Krishanappa, Haszelini Hassan
BACKGROUND: Post-extraction bleeding (PEB) is a recognised, frequently encountered complication in dental practice, which is defined as bleeding that continues beyond 8 to 12 hours after dental extraction. The incidence of post-extraction bleeding varies from 0% to 26%. If post-extraction bleeding is not managed, complications can range from soft tissue haematomas to severe blood loss. Local causes of bleeding include soft tissue and bone bleeding. Systemic causes include platelet problems, coagulation disorders or excessive fibrinolysis, and inherited or acquired problems (medication induced)...
March 4, 2018: Cochrane Database of Systematic Reviews
Stephen L Greene, Chung How Kau, Somsak Sittitavornwong, Kathlyn Powell, Noel K Childers, Mary MacDougall, Ejvis Lamani
Cleidocranial dysplasia (CCD, MIM 119600) is a rare autosomal dominant disorder affecting bone, cartilage, craniofacial growth, and tooth formation leading to supernumerary teeth. Few reports delineate the genotype-phenotype correlations related to the variations in craniofacial morphology and patterning of the dentition and the complexity of treating patient's malocclusion. Successful management of the craniofacial deformities in patients with CCD requires a multidisciplinary team of healthcare specialists...
March 1, 2018: Journal of Craniofacial Surgery
Maryam Ghazizadeh, Mahnaz Sheikhi, Mohammad Mahdi Salehi, Amin Khaleghi
The coronoid process is a beaklike process in the ramus of the mandible. Coronoid process hyperplasia (CPH) is a rare possible cause of reduced mouth opening. An overgrown process interferes with mandibular rotation and lateral excursion and hence leads to restricted mouth opening (RMO). Although some factors are suggested, etiology of CPH is not completely known. Prescription of suitable radiography is necessary for an accurate diagnosis. This article reports a 30-year-old man with bilateral CPH and progressive RMO since childhood...
February 2018: Radiology Case Reports
Olumayowa O Igado
Understanding skull anatomy and morphometry is crucial to the diagnosis and treatment of some osteology disorders. This study investigated the morphometry and skull typology of the skull of the Nigerian local dog as a skull prototype for the dolichocephalic breed of dogs. A total of sixteen adult dogs (7 males, 9 females), of about 2 years were used. A total of 20 parameters were measured on each skull, and two indices (cephalic and orbital) calculated. The males had higher values for nine parameters (two of which were calculated indices), including the maximum width of the skull, length of the mandibular symphysis, height of the tympanic bulla and height of the external auditory opening, although no statistically significant difference was observed (p > 0...
December 30, 2017: Nigerian Journal of Physiological Sciences: Official Publication of the Physiological Society of Nigeria
Soumyojeet Bagchi, Arvind Tripathi, Suryakant Tripathi, Sushil Kar, Sarvada Chandra Tiwari, Juhi Singh
PURPOSE: To record the incidence of cognitive dysfunction in edentulous patients suffering from obstructive sleep apnea (OSA) and establish a plausible hypothesis to explain the correlation of cognitive dysfunction and OSA. MATERIALS AND METHODS: In this study, 315 edentulous patients (aged 60 to 65 years) visiting the outpatient department at Saraswati Dental College, Lucknow were recruited from January 2013 to October 2015. Prosthodontic Diagnostic Index (PDI) classification was used to assess the intraoral condition to relate it with the span of edentulousness...
February 22, 2018: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
Irena Mladenovic, Jelena Krunic, Nikola Stojanovic, Dusanka Markovic, Silvia Rdt de Siqueira
AIMS: To explore the unstimulated salivary flow rate and subjective feeling of oral dryness in young adult women with temporomandibular disorders (TMD) and their relation to the presence of chronic pain, depression, somatization, and limited mandibular mobility. METHODS: Unstimulated whole saliva flow rate and presence of oral dryness were determined in 45 women with TMD and 30 healthy controls. The Research Diagnostic Criteria for TMD (RDC/TMD) were used for assessment of TMD, chronic pain, depression, somatization, and mandibular mobility...
February 21, 2018: Journal of Oral & Facial Pain and Headache
Nobuhide Kido, Sohei Tanaka, Yuko Wada, Sumito Sato, Tomoko Omiya
To treat dental disorders and estimate age, it is important that veterinarians understand teeth eruption sequence for the animal in question. Few dental images of the eastern grey kangaroo have been published. In the present study, radiographic imagings of 29 kangaroos, ranging in age from 12 months to 10 years 9 months, was used to surveil the replacement of premolars and the eruption of molars. These images revealed eruption patterns in five stages, while the second and third deciduous premolars were shed non-systematically...
February 15, 2018: Journal of Veterinary Medical Science
Olcay Sakar, Zeliha Matur, Zeynep Mumcu, Pinar Sesen, Emre Oge
Oromandibular dystonia (OMD) is defined as a subset of movement disorders characterized by involuntary muscle contraction in different parts of the oromandibular region. This clinical report presents a multidisciplinary approach to the management of a patient with OMD. The involuntary movement of her mandible and tongue was improved with a mandibular custom occlusal splint and maxillary modified removable complete denture together with botulinum toxin A injections.
February 8, 2018: Journal of Prosthetic Dentistry
Zachary S Peacock, Alfonso Salcines, Maria J Troulis, Leonard B Kaban
PURPOSE: 1) To assess the fate of the permanent teeth in and adjacent to the regenerate in pediatric patients who underwent mandibular distraction osteogenesis (DO) and 2) to compare the postoperative growth of the distracted mandible with age- and gender-matched controls. PATIENTS AND METHODS: This was a retrospective cohort study of children who underwent mandibular DO during the primary or mixed dentition period and before completion of somatic growth (boys aged ≤14 years and girls aged ≤12 years) at Massachusetts General Hospital from 1996 to 2014...
January 31, 2018: Journal of Oral and Maxillofacial Surgery
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