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Mandibular pathology

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https://www.readbyqxmd.com/read/28495409/effect-of-asymptomatic-visible-third-molars-on-periodontal-health-of-adjacent-second-molars-a-cross-sectional-study
#1
Hong-Lei Qu, Bei-Min Tian, Kun Li, Li-Na Zhou, Zhi-Bang Li, Fa-Ming Chen
PURPOSE: Evidence that asymptomatic third molars (M3s) negatively affect their adjacent second molars (A-M2s) is limited. The present study evaluated the association between visible M3s (V-M3s) of various clinical status with the periodontal pathologic features of their A-M2s. PATIENTS AND METHODS: Subjects with at least 1 quadrant having intact first and second molars, either with V-M3s and symptom free or without adjacent V-M3s, were enrolled in the present cross-sectional investigation...
April 14, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28494046/traditional-postextractive-implant-site-preparation-compared-with-pre-extractive-interradicular-implant-bed-preparation-in-the-mandibular-molar-region-using-an-ultrasonic-device-a-randomized-pilot-study
#2
Antonio Scarano
PURPOSE: The immediate placement of single postextractive implants is increasing in the everyday clinical practice. Due to insufficient bone tissue volume, proper primary stability, essential for subsequent osseointegration, is sometimes not reached. The aim of this work was to compare two different approaches: implant bed preparation before and after root extraction. MATERIALS AND METHODS: Twenty-two patients of both sexes were selected who needed an implant-prosthetic rehabilitation of the fractured first mandibular molar or presented an untreatable endodontic pathology...
May 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28472562/prevalence-of-odontogenic-lesions-among-the-kanpur-population-an-institutional-study
#3
Amrita Raj, Gayathri Ramesh, Ramesh Nagarajappa, Amit Pandey, Ankita Raj
BACKGROUND: The frequency and incidence of odontogenic cysts and tumors are controversial and depends in the geographic location. These lesions have great clinical and histopathological diversity, and reflect a need for epidemiological profile to be considered when these lesions are studied. AIM: The purpose of this study was to determine the prevalence of odontogenic cysts and tumors over a period of 10 years and to compare with other data reported around the world...
May 2017: Journal of Experimental Therapeutics & Oncology
https://www.readbyqxmd.com/read/28462196/aggressive-unicystic-ameloblastoma-affecting-the-posterior-mandible-late-diagnosis-during-orthodontic-treatment
#4
Sérgio Lúcio Pereira de Castro Lopes, Isadora Luana Flores, Thiago de Oliveira Gamba, Rivea Ines Ferreira-Santos, Mari Eli Leonelli de Moraes, Aline Alvarez Cabello, Paula Nascimento Moutinho
Maxillofacial images must be examined to find pathologies not identified during clinical examination. Unicystic ameloblastoma (UA) extending to the mandibular body and ramus was neglected on initial panoramic radiographic examination. After orthodontic therapy, a huge lesion was observed clinically and through imaging exams. After the conservative surgery, no recurrence was observed during five years of follow-up. This case emphasized the need for careful evaluation of patient images focusing on the oral diagnosis before any dental treatment planning, including orthodontic therapy...
April 2017: Journal of the Korean Association of Oral and Maxillofacial Surgeons
https://www.readbyqxmd.com/read/28452718/tinnitus-in-temporomandibular-joint-disorders-is-it-a-specific-somatosensory-tinnitus-subtype
#5
Giuseppe Maria Antonio Algieri, Alessandra Leonardi, Paolo Arangio, Valentino Vellone, Carlo Di Paolo, Piero Cascone
The most significant otologic symptoms, consisting of ear pain, tinnitus, dizziness, hearing loss and auricolar "fullness", generally arise within the auditory system, often are associated with extra auricolar disorders, particularly disorder of the temporo-mandibular joint. In our study we examined a sample of 200 consecutive patients who had experienced severe disabling symptom. The patiens came to maxillofacial specialist assessment for temporomandibular disorder. Each patient was assessed by a detailed anamnestic and clinical temporomandibular joint examination and they are divided into five main groups according classification criteria established by Wilkes; tinnitus and subjective indicators of pain are evaluated...
April 19, 2017: International Tinnitus Journal
https://www.readbyqxmd.com/read/28442112/experimental-infection-with-yersinia-pseudotuberculosis-in-european-brown-hare-lepus-europaeus-pallas
#6
Filippo Fratini, Ranieri Verin, Valentina V Ebani, Cecilia Ambrogi, Fabrizio Bertelloni, Barbara Turchi, Alessandro Poli, Domenico Cerri
OBJECTIVE: To investigate clinicopathological, bacteriological and pathological aspects of an experimental infection with Yersinia pseudotuberculosis (Y. pseudotuberculosis) in hares to verify the efficacy of serology for the in vivo diagnosis. Moreover, the pathogenicity of two Y. pseudotuberculosis strains was investigated in order to detect potential differences. METHODS: Twelve European brown hares (Lepus europaeus, Pallas) were experimentally infected per os and via conjunctival mucosae with Y...
March 2017: Asian Pacific Journal of Tropical Medicine
https://www.readbyqxmd.com/read/28437515/a-new-equation-for-predicting-evolution-of-oral-pain-in-orthodontic-treatment-a-longitudinal-prospective-cohort-study
#7
Monica Larrea, Rosario Salvador, Rosa Cibrian, Jose Luis Gandia, Vanessa Paredes-Gallardo
AIMS: To develop an equation capable of relating the evolution of oral pain to the time elapsed, measured from the moment of dental archwire fitting and identifying when pain begins, peaks, and ends; and secondly, to compare pain during orthodontic treatment in relation to archwire material (steel or nickel-titanium [Ni-Ti]) and position (maxillary or mandibular) and patient age (child, teenager, or adult) and gender (male or female). METHODS: A longitudinal prospective cohort study was conducted of 112 patients who filled in a scale to evaluate pain, noting the times when the pain occurred...
April 2017: Journal of Oral & Facial Pain and Headache
https://www.readbyqxmd.com/read/28437035/the-association-between-oral-examination-findings-and-the-computed-tomographic-appearance-of-the-equine-temporomandibular-joint
#8
J L Carmalt, H Simhofer, A Bienert-Zeit, J E Rawlinson, C L Waldner
BACKGROUND: The temporomandibular joint (TMJ) forms the junction between the maxilla and mandible. Movement of the jaw and resulting masticatory forces have been extensively studied in the horse; however, less is known about the inter-relationship between this joint and oral and dental pathology. OBJECTIVES: To determine the association between specific oral and dental pathologies and anatomical variations of the TMJ imaged with computed tomography (CT) in horses with asymptomatic TMJs...
April 24, 2017: Equine Veterinary Journal
https://www.readbyqxmd.com/read/28419843/a-review-of-in-office-dynamic-image-navigation-for-extraction-of-complex-mandibular-third-molars
#9
Robert W Emery, Oxana Korj, Ravi Agarwal
PURPOSE: We performed a retrospective review of in-office removal of complex mandibular third molars with a dynamic image navigation system (DINS). MATERIALS AND METHODS: A retrospective review was conducted of cases completed from 2010 to 2014 by a single oral and maxillofacial surgeon. The average age of the patients was 47 years (range, 27 to 72 years). Extraction complexity was classified with Juodzbalys and Daugela's classification system. The included study cases had complexity scores of 9 or greater...
March 25, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28396243/mechanical-force-mediated-pathological-cartilage-thinning-is-regulated-by-necroptosis-and-apoptosis
#10
C Zhang, S Lin, T Li, Y Jiang, Z Huang, J Wen, W Cheng, H Li
OBJECTIVE: This study aimed to identify the mechanisms underlying mandibular chondrocyte cell death and cartilage thinning in response to mechanical force. MATERIAL AND METHODS: An in vivo model (compressive mechanical force) and an in vitro model (TNF-α+cycloheximide) were used to induce mandibular chondrocyte necroptosis. Hematoxylin and eosin staining and transmission electron microscopy were used to assess histological and subcellular changes in mandibular chondrocyte...
April 7, 2017: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/28396232/treatment-of-osteomyelitis-a-case-for-disruption-of-the-affected-adjacent-periosteum
#11
J W Hudson, Austin P Daly, Michael Foster
PURPOSE: To evaluate the response of mandibular osteomyelitis treated by surgical decortication with disruption of the affected adjacent periosteum in concert with long-term targeted antibiotic therapy. The hypothesis is that, by removing the buccal cortical plate and disrupting the hypertrophically inflamed adjacent periosteum, the medullary bone will be brought in contact with bleeding tissue and circulating immunologic factors and antibiotics, which will promote definitive resolution...
March 18, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28390826/estimation-of-date-of-death-through-wound-healing-of-an-extraction-socket-a-case-report
#12
Joan Viciano, Ruggero D'Anastasio, Cristian D'Ovidio, Sara Costantini, Aldo Carnevale, Luigi Capasso
Surgical extraction of teeth due to dental pathologies is a relatively common procedure in modern man. The healing of the wound that results occurs in gradual and sequential stages, such that the analysis of this repair process can be very useful in forensic investigations on human remains. The following study reports on a particular case where the remodeling of a tooth socket allowed an estimation of the time that had elapsed from the day of the surgical extraction of the tooth to the time of death. The corpse was that of a woman of 34 years...
March 27, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28388395/surgical-uprighting-is-a-successful-procedure-for-management-of-impacted-mandibular-second-molars
#13
Bonnie L Padwa, Rushil R Dang, Cory M Resnick
PURPOSE: Impacted mandibular second molars can cause caries and root resorption on adjacent molars and can lengthen orthodontic treatment. Surgical uprighting is one management option. The purposes of this study were to 1) evaluate radiographic outcomes for surgical uprighting of impacted mandibular second molars and 2) propose an etiology for impaction. MATERIALS AND METHODS: This was a retrospective cohort study of patients who had surgical uprighting of mandibular second molars and had preoperative and at least 12-month postoperative panoramic images and an age- and gender-matched control group of patients undergoing routine orthodontic treatment...
March 14, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28357091/colon-cancer-metastasis-to-the-mandibular-gingiva-with-partial-occult-squamous-differentiation-a-case-report-and-literature-review
#14
Quan-Guang Ren, Tao Huang, Sheng-Li Yang, Jian-Li Hu
Metastasis is the primary cause of death among patients with colon cancer. However, the number of available studies regarding oral cavity metastases from colon cancer is currently limited. We herein report an unusual case of a 60-year-old male patient who developed an oral cavity metastasis from colon cancer. A total of 12 clinical case studies reporting colon cancer metastases to the mandibular gingival region were also reviewed, with the aim to elucidate the clinical and pathological characteristics of this disease entity in order to improve clinical diagnosis and treatment...
February 2017: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28327074/successful-treatment-of-mandibular-nonunion-with-cortical-allograft-cancellous-autograft-and-locking-titanium-miniplates-in-a-dog
#15
Christopher J Snyder, Jason A Bleedorn, Jason W Soukup
Discontinuities of the mandible can occur for a variety of reasons including primary pathology of bone, pathologic fracture secondary to periodontal disease, and segmental resection for the treatment of neoplasia. Surgical intervention is necessary in many cases to establish normal occlusion and normal mandibular function. Rigid stabilization and treatment of these defects can be challenging due to the limited availability of bone for fixation as well as limited soft tissue coverage. This case report describes successful treatment of a nonunion fracture using cortical allograft and locking titanium miniplates...
September 2016: Journal of Veterinary Dentistry
https://www.readbyqxmd.com/read/28290310/a-secondary-mandibular-condylar-articulation-and-collateral-effects-on-a-late-neolithic-mandible-from-bois-madame-rockshelter-in-arbre-belgium
#16
Frank L'Engle Williams, Caroline Polet
A Neolithic Belgian mandible from Bois Madame rockshelter in Arbre presents an asymmetrical morphology resulting from a secondary, or false, articulation of the right mandibular condyle. The pathological articulation produced enlarged masseter, medial pterygoid and mylohyoid musculature on the right side as well as a flattening of the right incisal alveolus curvature. The secondary condylar articulation did not lead to pronounced asymmetry of attrition on the antimeres of the dental arcade. This is the most complete mandible from this Late Neolithic collective burial dating to the beginning of the Bronze Age circa 4000 years BP...
March 2017: International Journal of Paleopathology
https://www.readbyqxmd.com/read/28290304/ectopic-eruption-of-a-lower-permanent-molar-from-the-mediaeval-necropolis-of-alc%C3%A3-%C3%A3-ova-do-castelo-m%C3%A3-rtola-portugal
#17
Inês Leandro, Clara Rodrigues, Susana Gómez-Martínez, Cláudia Umbelino
The mediaeval necropolis of Alcáçova do Castelo is located in Mértola, Southern Portugal, and dates from the 14th to the 16th centuries. The archaeological campaigns started in 1978 and continue today, having yielded more than 759 graves. This report discusses an ectopic tooth eruption observed in skeleton 535, an adult female individual. A distal right permanent lower molar presents an ectopic eruption at the posterior margin of the coronoid process. On the opposite side, the first and second permanent molars are present, the left permanent lower third molar is absent and the mandibular ramus cannot be evaluated since it is broken off and lost...
March 2017: International Journal of Paleopathology
https://www.readbyqxmd.com/read/28287144/mir-153-regulates-amelogenesis-by-targeting-endocytotic-and-endosomal-lysosomal-pathways-novel-insight-into-the-origins-of-enamel-pathologies
#18
Kaifeng Yin, Wenting Lin, Jing Guo, Toshihiro Sugiyama, Malcolm L Snead, Joseph G Hacia, Michael L Paine
Amelogenesis imperfecta (AI) is group of inherited disorders resulting in enamel pathologies. The involvement of epigenetic regulation in the pathogenesis of AI is yet to be clarified due to a lack of knowledge about amelogenesis. Our previous genome-wide microRNA and mRNA transcriptome analyses suggest a key role for miR-153 in endosome/lysosome-related pathways during amelogenesis. Here we show that miR-153 is significantly downregulated in maturation ameloblasts compared with secretory ameloblasts. Within ameloblast-like cells, upregulation of miR-153 results in the downregulation of its predicted targets including Cltc, Lamp1, Clcn4 and Slc4a4, and a number of miRNAs implicated in endocytotic pathways...
March 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28286639/calcifying-cystic-odontogenic-tumor-in-radiologically-normal-dental-follicular-space-of-mandibular-third-molars-report-of-two-cases
#19
Gargi S Sarode, Sachin C Sarode, Ghevaram Prajapati, Mahesh Maralingannavar, Shankargouda Patil
Two cases of calcifying cystic odontogenic tumor (CCOT) of the dental follicle in an impacted third molar without clinical and radiological evidence are reported during routine histopathological examination. In both the cases left mandibular third molar was mesioangularly impacted with pericoronal radiolucency of less than 2.5 mm, which was not indicative of any pathology. As a routine protocol (which is not practiced widely) of our institution, dental follicles associated with extracted molars were sent for histopathological examination...
January 11, 2017: Clinics and Practice
https://www.readbyqxmd.com/read/28286393/versatility-of-fibula-free-flap-in-reconstruction-of-facial-defects-a-center-study
#20
Sunil S Shroff, Sanjiv C Nair, Anjan Shah, Balasubramanya Kumar
PURPOSE: To study a series of cases where vascularised fibula flap was used in various combinations of bone with muscle and skin along with its modifications for reconstruction of simple and composite defects of the facial region. PATIENTS AND METHODS: The investigators designed a retrospective study composed of patients with any pathology or defect who underwent reconstruction of maxilla or mandible with vascularised fibula free flap from 2009 to 2013. All patients were evaluated for age, gender, location and type of defect, incorporation of adjoining skin paddle and muscle, number of fibula osteotomies, ischaemia time, anticoagulant regimen, length of hospital stay, flap failure rate, dental implant rehabilitation...
March 2017: Journal of Maxillofacial and Oral Surgery
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