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Mandibular pathology

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https://www.readbyqxmd.com/read/28913321/mixed-tumor-in-deep-lobe-and-versatility-of-acellular-dermal-matrix
#1
Jin Hwan Byun, Jung Soo Lim, Hye Kyung Lee
Frey's syndrome and infra-auricular depressed deformities are the ones of the most common complications that can occur after total parotidectomy. We report 1 case of pleomorphic adenoma occurred in the deep lobe that obtained good results from using acellular dermal matrix (ADM) after total parotidectomy. A 24-year-old man visited the hospital with oval shape mass in right mandibular angle which of 4 cm in size was found in the deep lobe of right parotid gland from Magnetic resonance imaging scanning and a pleomorphic adenoma was suspected...
June 2017: Arch Craniofac Surg
https://www.readbyqxmd.com/read/28902254/condylectomy-and-surgery-first-approach-an-expedited-treatment-for-condylar-hyperplasia-in-a-patient-with-facial-asymmetry
#2
Diego Fernando López, Juan Fernando Aristizábal, Rosana Martínez-Smit
Condylar Hyperplasia (CH) is a self-limiting pathology condition that produces severe facial deformity at the expense of mandibular asymmetry. In this case report a 15-year-old female patient was diagnosed with Unilateral Condylar Hiperplasia (UCH) by mean of single-photon emission computed tomography (SPECT) and histological study. A high condylectomy in the right condyle was performed to stop the active status of the hyperplasia. A month after condylectomy, orthognathic jaw impaction and asymmetric mandibular setback surgery was performed with the Surgery First Approach (SFA)...
July 2017: Dental Press Journal of Orthodontics
https://www.readbyqxmd.com/read/28891406/clinical-practice-guideline-evaluation-of-the-neck-mass-in-adults
#3
Melissa A Pynnonen, M Boyd Gillespie, Benjamin Roman, Richard M Rosenfeld, David E Tunkel, Laura Bontempo, Itzhak Brook, Davoren Ann Chick, Maria Colandrea, Sandra A Finestone, Jason C Fowler, Christopher C Griffith, Zeb Henson, Corinna Levine, Vikas Mehta, Andrew Salama, Joseph Scharpf, Deborah R Shatzkes, Wendy B Stern, Jay S Youngerman, Maureen D Corrigan
Objective Neck masses are common in adults, but often the underlying etiology is not easily identifiable. While infections cause most of the neck masses in children, most persistent neck masses in adults are neoplasms. Malignant neoplasms far exceed any other etiology of adult neck mass. Importantly, an asymptomatic neck mass may be the initial or only clinically apparent manifestation of head and neck cancer, such as squamous cell carcinoma (HNSCC), lymphoma, thyroid, or salivary gland cancer. Evidence suggests that a neck mass in the adult patient should be considered malignant until proven otherwise...
September 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28872995/eva-vacuum-formed-alternative-splinting-of-alveolar-fractures-in-primary-dentition-a-case-report
#4
Konstantina Chatzidimitriou, Nikos N Lygidakis, Nick A Lygidakis
Alveolar fractures treatment includes repositioning of displaced segments and splinting. In children, splinting procedures may occasionally present clinical problems resulting from fewer teeth available for splinting or presence of occlusal disturbances. An alternative clinical approach for splinting in alveolar fractures of primary dentition is described. CLINICAL CASE: A 4.5-year-old girl was referred to our clinic 8 hours after a fall accident. Clinical examination revealed mandibular alveolar process segmental fracture in the right canine area with frontal dislodgement of the labial cortical bone resulting to occluding inability...
2017: Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/28872507/protection-of-the-temporomandibular-joint-during-syndromic-mandibular-distraction-with-a-novel-condylar-offloading-device
#5
Sagar T Mehta, Neal Moores, Duane Yamashiro, Faizi Siddiqi, Barbu Gociman
Mandibular distraction for severe micrognathia in syndromic patients often leads to temporomandibular joint (TMJ) ankylosis, which requires further interventions to regain joint motion. The increased incidence of postdistraction ankylosis is likely related to increased prevalence of preoperative joint pathology in syndromic micrognathic patients. Previous studies have demonstrated that offloading the pressure on the condyle during the distraction process can prevent such TMJ pathology. In this article, the authors describe a successful new method for offloading the condyle to prevent postdistraction ankylosis using an external TMJ offloading device...
September 1, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28863882/evaluation-of-mandibular-bone-after-dental-extraction-in-rats-treated-with-antiresorptive-drugs
#6
Victor Lousan Do Nascimento Poubel, Diogo Lenzi Capella, Adair Roberto Soares Santos, Márcio Correa, Letícia Ruhland Correa, Elena Riet Correa Rivero
PURPOSE: Zoledronic acid (ZOL) and denosumab (Dmab) are commonly used to treat bone pathologies. Because these drugs suppress bone metabolism, this study sought to compare their effect on bone repair after tooth extraction. MATERIALS AND METHODS: Four-week-old male Wistar rats were randomly assigned to 1 of 3 groups: ZOL 0.125 mg/kg, Dmab 0.25 mg/kg, or saline solution 10 mL/kg (control). After 1 week of treatment, the first left molar was extracted; the rats were euthanized at 28 days...
August 3, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28833486/impaired-periodontium-and-temporomandibular-joints-in-tnf-%C3%AE-transgenic-mice
#7
Toni Dobsak, Patrick Heimel, Stefan Tangl, Uwe Schwarze, Georg Schett, Reinhard Gruber
AIM: TNF-α is a pathological factor causing the characteristic symptoms of periodontal disease and rheumatoid arthritis. In this study we describe the phenotypes of human tumor necrosis factor (TNF)-α transgenic mice (hTNFtg) with respect to their periodontium and the temporomandibular joint (TMJ). MATERIAL AND METHODS: Periodontal structures, TMJ, and skull shape of hTNFtg mice and wild-type (WT) littermates were assessed by micro computed tomography, automated segmentation, geometric morphometrics and histologic ground sections...
August 18, 2017: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/28822566/human-pulp-responses-to-partial-pulpotomy-treatment-with-theracal-as-compared-with-biodentine-and-proroot-mta-a-clinical-trial
#8
Hengameh Bakhtiar, Mohammad Hossein Nekoofar, Pouyan Aminishakib, Fatemeh Abedi, Fereshteh Naghi Moosavi, Ehsan Esnaashari, Arash Azizi, Samar Esmailian, Mohammad Reza Ellini, Vahid Mesgarzadeh, Mehdi Sezavar, Imad About
INTRODUCTION: Questions exist regarding the efficacy of resin-containing materials such as TheraCal directly applied on the pulp. This study sought to investigate the clinical efficacy of TheraCal as compared with Biodentine and ProRoot mineral trioxide aggregate (MTA) for partial pulpotomy. METHODS: In this clinical trial, partial pulpotomy was performed for 27 sound human maxillary and mandibular third molars scheduled for extraction. The teeth were randomly divided into 3 groups (n = 9) and underwent partial pulpotomy with TheraCal, Biodentine, and ProRoot MTA...
August 16, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28809370/marsupialization-facilitates-movement-of-the-cystic-lesion-associated-deeply-impacted-mandibular-third-molar-in-spite-of-its-mature-roots
#9
R Sun, Y Cai, Y Wu, J-H Zhao
BACKGROUND: The odontogenic cystic lesions happened in the angle and ramus region are frequently associated with impacted mandibular third molars. The treatment plan was difficult to work out for the huge cystic lesions with deeply impacted third molars, since the enucleation with simultaneously removing the deeply impacted teeth may cause serious complications. Therefore, the marsupialization of the cystic lesions followed by enucleation with tooth removal has also been advocated. The aim of this study was to explore the movement of cystic lesion-associated deeply impacted mandibular third molars (IMTM) after marsupialization...
August 15, 2017: Medicina Oral, Patología Oral y Cirugía Bucal
https://www.readbyqxmd.com/read/28808696/psychological-stress-alters-extracellular-matrix-metabolism-in-mandibular-condylar-cartilage
#10
Qiang Li, Fei Huang, Jia Liu, Yin Hua Zhao, Min Zhang, Yong Jin Chen
OBJECTIVE: To explore the effect of long-term stress on the temporomandibular joint (TMJ) condyle and its possible underlying mechanism. METHODS: A 12-week, chronic unpredictable mild stress (CUMS) model was used to induce long-term psychological stress in rats. Rats were randomly divided into control group (CONT), chronic unpredictable mild stress group (CUMS) and chronic unpredictable mild stress with fluoxetine treatment group (CUMS + DT) (n = 30 per group). A 5 mg/kg dose of fluoxetine was intraperitoneally injected daily 0...
2017: Chinese Journal of Dental Research
https://www.readbyqxmd.com/read/28803895/periderm-life-cycle-and-function-during-orofacial-and-epidermal-development
#11
REVIEW
Nigel L Hammond, Jill Dixon, Michael J Dixon
Development of the secondary palate involves a complex series of embryonic events which, if disrupted, result in the common congenital anomaly cleft palate. The secondary palate forms from paired palatal shelves which grow initially vertically before elevating to a horizontal position above the tongue and fusing together in the midline via the medial edge epithelia. As the epithelia of the vertical palatal shelves are in contact with the mandibular and lingual epithelia, pathological fusions between the palate and the mandible and/or the tongue must be prevented...
August 10, 2017: Seminars in Cell & Developmental Biology
https://www.readbyqxmd.com/read/28759313/glycosylation-of-dmp1-is-essential-for-chondrogenesis-of-condylar-cartilage
#12
Y Weng, Y Liu, H Du, L Li, B Jing, Q Zhang, X Wang, Z Wang, Y Sun
The mandibular condylar cartilage (MCC) shoulders force for the subchondral bone during mastication. The cartilage matrix contains various large molecules, such as type I, II, and X collagens and proteoglycans (PGs), which jointly play essential roles in maintaining cartilage characteristics. PGs play key roles in maintaining the elasticity of cartilage and providing a cushion against mastication forces. In addition to the well-known PGs, DMP1-PG, which is the PG form of dentin matrix protein 1 (DMP1), is a newly identified PG...
July 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28756362/massive-bleeding-after-a-tooth-extraction-diagnosis-of-unknown-arteriovenous-malformation-of-the-mandible-a-case-report
#13
Nasr Hasnaoui, Eric Gérard, Etienne Simon, Julie Guillet
INTRODUCTION: Arteriovenous malformations (AVMs) are very rare. Only 5% of them occurs in the jaws but they can manifest with dramatic bleeding and be life-threatening. PRESENTATION OF CASE: We report the case of a 11-year-old healthy girl who presented a massive hemorrhage after extraction of the right mandibular first primary molar. This patient received a blood transfusion and was hospitalized in pediatric intensive care unit. CT angiography highlighted an AVM of the mandible...
2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28703117/early-diagnostics-of-temporomandibular-joint-structural-elements-injures-caused-by-traumatic-mandibular-bone-fractures
#14
Kh R Pohranychna, A R Stasyshyn, U D Matolych
A rapidly increasing number of mandibular condylar fractures and some complications related to injuries of temporomandibular elements make this study important. Intra-articular disorders lead to secondary pathological findings such as osteoarthritis, deforming osteoarthrosis, and temporomandibular joint ankylosis that limits mouth opening, mastication, swallowing, breathing, and decreased/lost working capacity or disability. Early diagnosis of intra-articular disorders can prevent from long-lasting functional complications caused by temporomandibular joint injuries...
June 30, 2017: Polski Przeglad Chirurgiczny
https://www.readbyqxmd.com/read/28700034/application-of-endoscopy-to-treat-mandibular-keratocystic-odontogenic-tumors
#15
Z Gao, Q W Ni, W Gao, Y P Liu, Q Zhang
The aim of this study was to evaluate the feasibility of endoscopy to remove keratocystic odontogenic tumors (KCOTs) with virtual 3D mandibular images. Fifteen patients (mean age, 40.27±14.58 years) who underwent endoscopic mandibular KCOT enucleation between May 2009 and October 2009 were included. Virtual 3D mandibular reconstructions derived from computed tomography (CT) imaging were generated for all patients. Recurrence and pathological fracture were evaluated as the primary outcome variables at 1 and 12 months after operation...
July 10, 2017: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/28680710/periodontal-and-endodontic-pathology-delays-extraction-socket-healing-in-a-canine-model
#16
Jung-Hoon Kim, Ki-Tae Koo, Joseph Capetillo, Jung-Ju Kim, Jung-Min Yoo, Heithem Ben Amara, Jung-Chul Park, Frank Schwarz, Ulf M E Wikesjö
PURPOSE: The aim of the present exploratory study was to evaluate extraction socket healing at sites with a history of periodontal and endodontic pathology. METHODS: The mandibular 4th premolar teeth in 5 adult beagle dogs served as experimental units. Periodontal and endodontic lesions were induced in 1 premolar site in each animal using wire ligatures and pulpal exposure over 3 months (diseased sites). The contralateral premolar sites served as healthy controls...
June 2017: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/28658924/a-case-report-of-rare-carcinoma-ex-pleomorphic-adenoma-of-submandibular-gland-and-its-detailed-description
#17
Kirti Balkrishna Buva, Ajinkya Amritrao Deshmukh, Atul A Deshmukh
A 65-year-old female patient reported with a chief complaint of swelling in the left lower region of the jaw since two years. On clinical examination, the swelling was present on the mandibular left posterior region and measuring approximately 6.2 cm antero-posteriorly × 6.2 cm mediolaterally × 8.7 cm superioinferiorly. Initially, it was non tender but eventually it became tender. Fine needle aspiration was done to rule out any salivary gland pathology and report obtained was carcinoma ex pleomorphic adenoma...
May 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28656918/study-of-kissing-molars-in-turkish-population-sample
#18
S Yanik, F Ayranci, Ö İşman, Ş Büyükçikrikci, M H Aras
BACKGROUND: "Kissing" or "rosetting" of molars are extremely rare phenomenon with limited cases in the dental literature. It was first described in 1973, refers to contacting occlusal surfaces of the impacted mandibular second and third molars. The aim of the present study was to report the incidence of kissing molars (KMs), classification, incorporated pathologies, and its management in a group of Turkish population. MATERIALS AND METHODS: The panoramic radiographs of the patients who referred to Gaziantep University Faculty of Dentistry between January 2012 and November 2014 for surgical treatment retrospectively were evaluated...
June 2017: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/28652899/comparison-of-the-antimicrobial-efficacy-of-calcium-hydroxide-and-photodynamic-therapy-against-enterococcus-faecalis-and-candida-albicans-in-teeth-with-periapical-lesions-an-in-vivo-study
#19
Zohre Ahangari, Maryam Mojtahed Bidabadi, Mohammad Asnaashari, Afsaneh Rahmati, Fahimeh Sadat Tabatabaei
Introduction: Elimination of pathological microflora of root canal systems is a major goal in endodontic treatment. This study aimed to compare the antimicrobial efficacy of calcium hydroxide as an intracanal medication and antibacterial photodynamic therapy (aPDT) against Enterococcus faecalis and Candida albicans in teeth with periapical (PA) lesions. Methods: This in vivo study was conducted on 20 patients with single-rooted mandibular premolar with previously failed endodontic treatment. This study was performed as a clinical trial (IRCTID: IRCT2016090429686N1)...
2017: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/28648385/fluorescence-imaging-of-lymphatic-outflow-of-cerebrospinal-fluid-in-mice
#20
Sunkuk Kwon, Christopher F Janssen, Fred Christian Velasquez, Eva M Sevick-Muraca
Cerebrospinal fluid (CSF) is known to be reabsorbed by the lymphatic vessels and drain into the lymph nodes (LNs) through peripheral lymphatic vessels. In the peripheral lymphatics, the contractile pumping action of lymphangions mediates lymph drainage; yet it is unknown whether lymphatic vessels draining cranial and spinal CSF show similar function. Herein, we used non-invasive near-infrared fluorescence imaging (NIRFI) to image (i) indocyanine green (ICG) distribution along the neuraxis and (ii) routes of ICG-laden CSF outflow into the lymphatics following intrathecal lumbar administration...
June 22, 2017: Journal of Immunological Methods
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