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Odontoma

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https://www.readbyqxmd.com/read/28691462/odontomas-review-of-the-literature-and-case-reports
#1
C Gervasoni, A Tronchet, S Spotti, S Valsecchi, V Palazzolo, S Riccio, A D Aiuto, L Azzi, A Di Francesco
Odontomas are one of the most common Odontogenic Tumors of the jaw. The exact etiology of odontomas is unknown. Histologically they are composed of various formations of dental tissue (enamel, dentin, cementum and sometimes pulp). In the WHO classification, they are divided into complex odontoma and compound odontoma. Clinically, odontomas are generally asymptomatic and only in rare cases cause swelling, pain, suppuration or bony expansion. Radiologically, the tumor is initially lucent, but with time, it develops small calcifications, which eventually coalesce to form a radiodense lesion with a lucent rim...
April 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28674741/new-tumour-entities-in-the-4th-edition-of-the-world-health-organization-classification-of-head-and-neck-tumours-odontogenic-and-maxillofacial-bone-tumours
#2
REVIEW
Paul M Speight, Takashi Takata
The latest (4th) edition of the World Health Organization Classification of Head and Neck tumours has recently been published with a number of significant changes across all tumour sites. In particular, there has been a major attempt to simplify classifications and to use defining criteria which can be used globally in all situations, avoiding wherever possible the use of complex molecular techniques which may not be affordable or widely available. This review summarises the changes in Chapter 8: Odontogenic and maxillofacial bone lesions...
July 3, 2017: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/28557592/ameloblastic-fibro-odontoma-of-the-maxilla-in-a-pierre-robin-sequence-patient
#3
Kenneth Kufta, Steve Kang, Faizan Alawi, Anna Moran, Neeraj Panchal
INTRODUCTION: Pierre Robin sequence (PRS) is a rare disorder classically observed as a triad of features including micrognathia, glossoptosis, and upper airway obstruction. It is associated with a syndrome in about 60% of cases. While odontogenic tumors are common findings in patients with familial adenomatous polyposis and nevoid basal cell carcinoma syndromes, PRS has not been found to be consistently associated with any tumors of the jaw. CASE REPORT: The current report aims to describe a patient with PRS who presented with an extensive ameloblastic fibro-odontoma (AFO) of the maxilla...
May 30, 2017: Fetal and Pediatric Pathology
https://www.readbyqxmd.com/read/28545325/mandibular-odontoameloblastoma-in-a-rat-and-a-horse
#4
Brian Murphy, Cynthia Bell, Amanda Koehne, Richard R Dubielzig
Odontoameloblastoma (OA) is a mixed odontogenic tumor that is an ameloblastoma with concurrent histologic evidence of odontoma differentiation. As a mixed tumor, OA is a tripartite lesion comprised of neoplastic odontogenic epithelium, induced dental ectomesenchyme (dental pulp), and mineralized dental matrix. Although rare, OA represents a diagnostic conundrum, as it is histologically closely related to 2 other mixed odontogenic tumors: odontoma (complex and compound) and ameloblastic fibro-odontoma. Herein we describe an OA arising from the mandible of a 4-mo-old Fischer 344 rat that had been exposed in utero to the mutagen ENU (N-ethyl-N-nitrosourea), and a naturally occurring lesion in a 2-y-old Appaloosa horse...
May 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28543986/a-case-of-primordial-odontogenic-tumor-a-new-entity-in-the-latest-who-classification-2017
#5
Toshinori Ando, Madhu Shrestha, Takashi Nakamoto, Kaori Uchisako, Sachiko Yamasaki, Koichi Koizumi, Ikuko Ogawa, Mutsumi Miyauchi, Takashi Takata
Primordial odontogenic tumor (POT) is a rare lesion in the jaw which has been included as a new entity of benign mixed epithelial and mesenchymal odontogenic tumour in the latest World Health Organization (WHO) classification (2017). Only seven cases have been reported. It typically occurs in the posterior mandible. We report an additional case of POT in the maxilla of an 8-year-old girl presenting with an asymptomatic buccal enlargement. A well-defined, unilocular, radiolucent lesion was observed radiographically...
May 25, 2017: Pathology International
https://www.readbyqxmd.com/read/28503263/spontaneous-peripheral-ameloblastic-odontoma-in-a-male-sprague-dawley-rat
#6
Yinghua Li, Han-Ik Bae, Hak-Soo Kim, Min-Soo Kang, Bo-Ho Gong, Won-Hee Jung, Sranna Lee, Jin-Sook Bae, Kap-Ho Kim, Si-Whan Song, Jae-Hyun Lee, Boo-Hyon Kang
Peripheral ameloblastic odontoma is a rare variant of odontogenic tumor occurring in the extraosseous region. The present report describes a spontaneous tumor in male Sprague-Dawley (SD) rats. The clinically confirmed nodule in the right mandibular region was first observed when the rat was 42 weeks and remained until the terminal sacrifice date when the animal was 48 weeks of age. At necropsy, a well demarcated nodule, approximately 2.5 × 2.0 × 2.0 cm, protruded from the ventral area of the right mandible...
April 2017: Toxicological Research
https://www.readbyqxmd.com/read/28494609/odontomas-in-developmental-age-confocal-laser-scanning-microscopy-analysis-of-a-case
#7
M Lacarbonara, V Lacarbonara, A P Cazzolla, V Spinelli, V Crincoli, M G Lacaita, M Capogreco
BACKGROUND: Odontomas are the most common benign odontogenic tumors (especially in children and adolescents) and consist of odontogenic ectomesenchyma and odontogenic epithelium with the formation of dental hard tissues. They are also simply considered hamartomas. The WHO Classification defines them as complex and compound odontomas. The diagnosis is often occasional, in conjunction with x-ray routine examinations, or it is suggested by eruption disorders or abnormal position of teeth in the dental arch...
March 2017: European Journal of Paediatric Dentistry: Official Journal of European Academy of Paediatric Dentistry
https://www.readbyqxmd.com/read/28494597/surgical-management-of-impacted-primary-teeth-report-of-two-cases
#8
G L Sfasciotti, G Di Carlo, R Marini, R Colaci, M Solidani, A Polimeni
AIM: Impaction of deciduous teeth is an uncommon event. The purpose of this report is to describe two unusual eruption failures of a second primary molar and their treatment management. CASE REPORT: The diagnostic and therapeutic protocol of two cases selected at the Unit of Paediatric Dentistry, Department of Oral and Maxillofacial Science, "Sapienza" University of Rome, Italy, are presented. In both cases, the second deciduous molar was impacted, while no mechanical obstacle like odontomas or supernumerary teeth were present...
March 2017: European Journal of Paediatric Dentistry: Official Journal of European Academy of Paediatric Dentistry
https://www.readbyqxmd.com/read/28468159/association-between-odontoma-and-impacted-teeth
#9
Gaetano Isola, Marco Cicciù, Luca Fiorillo, Giovanni Matarese
Odontoma is considered to be the most common odontogenic tumor of the oral cavity. Most odontomas are asymptomatic and are discovered during routine radiographic investigations and can cause disturbances in the eruption of the teeth, most commonly delayed eruption or deflection. By a retrospective study design, demographic and clinical data regarding patients who presented odontomas from year 1995 to 2015 were obtained in order and the influence of active therapy on the dentition and on the treatment of impacted teeth was analyzed...
May 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28460214/autotransplantation-of-odontoma-associated-impacted-teeth-a-treatment-strategy-for-satisfying-immediate-esthetic-demands-a-case-report
#10
Lisa Alice Hwang, Chih-Yin Kuo, Jung-Wu Yang, Wei-Fan Chiang
Compound odontomas are common odontogenic tumors associated with permanent tooth impaction in the premaxilla. This report describes the case of a 14-year-old girl with an odontoma-associated impaction over the premaxilla that was treated using autotransplantation to satisfy an immediate esthetic demand. At postoperative follow-up conducted in the 14th month, a satisfactory cosmetic appearance with a healthy periodontal status was observed. In addition, the authors discuss the possible complications of autotransplantation and different treatment strategies for odontoma-associated impaction and for correcting bone defects in this case report...
April 6, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28457275/nonsurgical-treatment-of-severe-class-ii-malocclusion-with-anterior-open-bite-using-mini-implants-and-maxillary-lateral-incisor-and-mandibular-first-molar-extractions
#11
Matheus Melo Pithon
This clinical case report presents the nonsurgical orthodontic treatment of a patient with skeletal Class II malocclusion, posterior crossbite, anterior open bite, accentuated dental discrepancies in both arches, and an odontoma. The proposed treatment involved maxillary expansion, extraction of atypical maxillary lateral incisors and mandibular first molars, and intrusion of maxillary teeth with the aid of mini-implants. The results obtained with these procedures included good tooth alignment, normal overbite and overjet, removal of the odontoma, and a harmonious smile...
May 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28278140/removal-of-compound-odontoma-with-piezosurgery-technique
#12
Gustavo Antonio Correa Momesso, Cecília Alves de Sousa, Valthierre Nunes de Lima, João Paulo Bonardi, Juliana Zorzi Coléte, Daniela Ponzoni, Leonardo Perez Faverani
No abstract text is available yet for this article.
March 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28218034/extensive-maxillary-odontomas-in-2-dogs
#13
Naomi K Hoyer, Kristin M Bannon, Cynthia M Bell, Jason W Soukup
Two immature male dogs were presented for the treatment of extensive maxillary compound odontomas. In both cases, clinical evaluation and diagnostic imaging revealed extensive lesions invading and displacing anatomical structures of the maxilla. Histopathology confirmed the diagnoses in both cases. One dog was treated with partial rostral maxillectomy, and the other dog was treated with enucleation of the cystic lining and removal of tooth-like structures through a lateral rhinotomy utilizing an intraoral approach...
December 2016: Journal of Veterinary Dentistry
https://www.readbyqxmd.com/read/28203028/-unerupted-first-deciduous-molar-located-higher-to-the-first-premolar-a-case-report
#14
Y Zhan, H Liu
Tooth eruption is defined as the movement of a tooth from its site of development within the alveolar process to its functional position in the oral cavity. The process of tooth eruption can be divided into different phases: pre-eruptive bone stage, alveolar bone stage, mucosal stage, preocclusal stage, occlusal stage and maturation stage. Any disturbance in these phases can lead to eruptive anomalies. The incidence of unerupted teeth is usually higher among permanent teeth than among deciduous ones. Of the primary teeth reported as unerupted, second deciduous molars are the teeth most frequently involved, followed by primary central incisors...
February 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28160576/the-relative-frequency-of-odontogenic-tumors-a-study-of-376-cases-in-a-brazilian-population
#15
R Lima-Verde-Osterne, E Turatti, R Cordeiro-Teixeira, R Barroso-Cavalcante
BACKGROUND: Odontogenic tumors (OTs) are rare lesions, exclusive of the jaws, that are derived from epithelial and/or ectomesenchymal elements of the tooth-forming apparatus. Their biological behavior is heterogeneous, including hamartomatous tissue proliferation, benign nonaggressive and aggressive neoplasms, and malignant tumors with metastatic capacity. The aim of this study was to describe the relative frequency of odontogenic tumors in a Brazilian population. In addition, a review of the literature identified studies on odontogenic tumors that follow the 2005 World Health Organization...
March 1, 2017: Medicina Oral, Patología Oral y Cirugía Bucal
https://www.readbyqxmd.com/read/28153756/ameloblastic-fibrodentinoma-and-ameloblastic-fibro-odontoma-an-updated-systematic-review-of-cases-reported-in-the-literature
#16
REVIEW
Bruno Ramos Chrcanovic, Ricardo Santiago Gomez
PURPOSE: To integrate the available data published on ameloblastic fibrodentinoma (AFD) and ameloblastic fibro-odontoma (AFO) into a comprehensive analysis of its clinical and radiologic features. MATERIALS AND METHODS: An electronic search was undertaken in August 2016. Eligibility criteria included publications reporting cases of AFD or AFO with enough clinical, radiologic, and histologic information to confirm the diagnosis. Demographic data, lesion site and size, treatment approach, and recurrence were analyzed and compared between AFD and AFO...
January 6, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28153133/odontogenic-cysts-and-neoplasms
#17
REVIEW
Elizabeth Ann Bilodeau, Bobby M Collins
This article reviews a myriad of common and uncommon odontogenic cysts and tumors. The clinical presentation, gross and microscopic features, differential diagnosis, prognosis, and diagnostic pitfalls are addressed for inflammatory cysts (periapical cyst, mandibular infected buccal cyst/paradental cyst), developmental cysts (dentigerous, lateral periodontal, glandular odontogenic, orthokeratinized odontogenic cyst), benign tumors (keratocystic odontogenic tumor, ameloblastoma, adenomatoid odontogenic tumor, calcifying epithelial odontogenic tumor, ameloblastic fibroma and fibroodontoma, odontoma, squamous odontogenic tumor, calcifying cystic odontogenic tumor, primordial odontogenic tumor, central odontogenic fibroma, and odontogenic myxomas), and malignant tumors (clear cell odontogenic carcinoma, ameloblastic carcinoma, ameloblastic fibrosarcoma)...
March 2017: Surgical Pathology Clinics
https://www.readbyqxmd.com/read/28151902/clinical-pathological-and-genetic-evaluations-of-chinese-patient-with-otodental-syndrome-and-multiple-complex-odontoma-case-report
#18
Anqi Liu, Meiling Wu, Xiaohe Guo, Hao Guo, Zhifei Zhou, Kewen Wei, Kun Xuan
Otodental syndrome is a rare autosomal-dominant disease characterized by globodontia, associated with sensorineural, high-frequency hearing loss. Here, we describe the clinical, pathological, and genetic evaluations of a 9-year-old girl with otodental syndrome and multiple complex odontoma.The patient presented with a draining sinus tract in her left cheek, globodontia, and hearing loss. The odontomas which caused the cutaneous sinus tracts were extracted because of the odontogenic infection. The extracted odontoma and primary tooth was studied by micro-CT and further observed histopathologically...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28133916/computed-tomographic-features-of-incisor-pseudo-odontomas-in-prairie-dogs-cynomys-ludovicianus
#19
Igor Pelizzone, Francesco Di Ianni, Antonella Volta, Giacomo Gnudi, Sabrina Manfredi, Mara Bertocchi, Enrico Parmigiani
Maxillary incisor pseudo-odontomas are common in pet prairie dogs and can cause progressive respiratory obstruction, while mandibular pseudo-odontomas are rarely clinically significant. The aim of this retrospective cross-sectional study was to describe CT features of maxillary and mandibular incisor pseudo-odontomas vs. normal incisors in a group of pet prairie dogs. All pet prairie dogs with head CT scans acquired during the period of 2013-2015 were included. A veterinary radiologist who was aware of final diagnosis reviewed CT scans and recorded qualitative features of affected and normal incisors...
May 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28106699/association-between-odontoma-and-impacted-teeth
#20
Gaetano Isola, Marco Cicciù, Luca Fiorillo, Giovanni Matarese
Odontoma is considered to be the most common odontogenic tumor of the oral cavity. Most odontomas are asymptomatic and are discovered during routine radiographic investigations and can cause disturbances in the eruption of the teeth, most commonly delayed eruption or deflection. By a retrospective study design, demographic and clinical data regarding patients who presented odontomas from year 1995 to 2015 were obtained in order and the influence of active therapy on the dentition and on the treatment of impacted teeth was analyzed...
January 18, 2017: Journal of Craniofacial Surgery
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