RESUMEN
Primordial odontogenic tumor (POT) is a recently described benign odontogenic tumor, with only 16 cases reported in the literature. We present 2 new cases of POT affecting the mandible. Case 1 is that of 12-year-old girl with an asymptomatic, slow-growing mass, causing facial asymmetry. Radiography showed a well-defined unilocular radiolucency surrounding an impacted second premolar. Case 2 is that of a 13-year-old girl with a mass involving the crown of the unerupted third molar and showing similar radiographic features. Microscopically, both lesions were composed of variably cellular fibromyxoid tissue surrounded by thin ameloblastic epithelium, with stellate reticulum-like areas, but no mineralized tissue, yielding the diagnosis of POT. Immunohistochemical analysis showed diffuse expression of CK14 in epithelial cells, whereas CK19 was expressed mainly in the basal layer. Syndecan-1 (CD138) was expressed in the stellate-like regions and in the subepithelial zone. Both patients were treated surgically, with no signs of recurrence seen after 15 and 60 months, respectively.
Asunto(s)
Recurrencia Local de Neoplasia , Tumores Odontogénicos , Adolescente , Niño , Epitelio , Femenino , Humanos , Mandíbula , Tercer Molar , Tumores Odontogénicos/diagnóstico por imagen , Tumores Odontogénicos/cirugíaRESUMEN
Horizontal bone loss after tooth extraction is a common finding that demands bone reconstruction in various cases. The aim of this study was to assess the horizontal alveolar status in partially and completely edentulous patients using cone-beam computed tomography (CBCT). In total, 1516 CBCT scans of 1404 adult patients were analyzed. Assessment of the images was performed in accordance with the previously published horizontal alveolar change (HAC) classification, which categorizes horizontal bone defects into four classes: HAC 1, HAC 2, HAC 3 and HAC 4 (from the least severe to the most severe condition). Analysis of 1048 scans from partially edentulous patients presented a distribution of 63.55%, 22.14%, 13.36% and 0.95% in HAC 1, HAC 2, HAC 3 and HAC 4, respectively. Analysis of 468 scans from completely edentulous patient images presented a distribution of 19.87%, 28.63%, 41.67% and 9.83% in HAC 1, HAC 2, HAC 3 and HAC 4, respectively. Based on these results, as in HAC 4, no cancellous bone was found between the cortical buccal and lingual/palatal bone plates, it seems reasonable to state that the absence of cancellous bone is higher in completely edentulous patients than in partially edentulous patients. Therefore, the absence of cancellous bone seems to be higher in completely edentulous than in partially edentulous patients.
Asunto(s)
Pérdida de Hueso Alveolar/epidemiología , Pérdida de Hueso Alveolar/patología , Proceso Alveolar/patología , Boca Edéntula/epidemiología , Boca Edéntula/patología , Adolescente , Adulto , Anciano , Pérdida de Hueso Alveolar/diagnóstico por imagen , Proceso Alveolar/diagnóstico por imagen , Aumento de la Cresta Alveolar , Brasil/epidemiología , Hueso Esponjoso/diagnóstico por imagen , Hueso Esponjoso/patología , Tomografía Computarizada de Haz Cónico/métodos , Femenino , Humanos , Masculino , Persona de Mediana Edad , Boca Edéntula/diagnóstico por imagen , Prevalencia , Estudios Retrospectivos , Adulto JovenRESUMEN
Abstract Horizontal bone loss after tooth extraction is a common finding that demands bone reconstruction in various cases. The aim of this study was to assess the horizontal alveolar status in partially and completely edentulous patients using cone-beam computed tomography (CBCT). In total, 1516 CBCT scans of 1404 adult patients were analyzed. Assessment of the images was performed in accordance with the previously published horizontal alveolar change (HAC) classification, which categorizes horizontal bone defects into four classes: HAC 1, HAC 2, HAC 3 and HAC 4 (from the least severe to the most severe condition). Analysis of 1048 scans from partially edentulous patients presented a distribution of 63.55%, 22.14%, 13.36% and 0.95% in HAC 1, HAC 2, HAC 3 and HAC 4, respectively. Analysis of 468 scans from completely edentulous patient images presented a distribution of 19.87%, 28.63%, 41.67% and 9.83% in HAC 1, HAC 2, HAC 3 and HAC 4, respectively. Based on these results, as in HAC 4, no cancellous bone was found between the cortical buccal and lingual/palatal bone plates, it seems reasonable to state that the absence of cancellous bone is higher in completely edentulous patients than in partially edentulous patients. Therefore, the absence of cancellous bone seems to be higher in completely edentulous than in partially edentulous patients.
Asunto(s)
Humanos , Masculino , Femenino , Adolescente , Adulto , Anciano , Adulto Joven , Pérdida de Hueso Alveolar/patología , Pérdida de Hueso Alveolar/epidemiología , Boca Edéntula/patología , Boca Edéntula/epidemiología , Proceso Alveolar/patología , Brasil/epidemiología , Prevalencia , Estudios Retrospectivos , Pérdida de Hueso Alveolar/diagnóstico por imagen , Boca Edéntula/diagnóstico por imagen , Tomografía Computarizada de Haz Cónico/métodos , Proceso Alveolar/diagnóstico por imagen , Aumento de la Cresta Alveolar , Hueso Esponjoso/patología , Hueso Esponjoso/diagnóstico por imagen , Persona de Mediana EdadRESUMEN
UNLABELLED: Vascular lesions have been classified in two broad categories, hemangiomas and malformations. Encapsulated vascular lesions have not been reported in the oral cavity, but they were described in other sites, mainly in the orbit. Herein, we present a case of an oral encapsulated vascular lesion located in the right buccal mucosa of a 69-year-old male, including histological and immunohistochemical description and a literature review. KEY WORDS: Buccal mucosa, hemangioma, vascular malformation, oral cavity.
RESUMEN
A correção assimétrica do sorriso é uma técnica cirúrgica realizada com o intuito de remodelar, dando um contorno estético a uma gengiva com excesso de tecido. É considerada uma técnica simples, porém, o profissional deve estar sempre atento às corretas indicações. Este trabalho pretendeu descrever um caso clínico de uma paciente com excesso gengival que foi submetida a uma cirurgia de caráter unicamente estético (gengivoplastia), para remoção do excesso de tecido e contorno gengival.