Cistos odontogênicos e não odontogênicos diagnosticados no laboratório de patologia oral da UFRJ em um período de 30 anos / Odontogenic and non-odontogenc cysts diagnosed in oral pathology laboratory of UFRJ in a period of 30 years

Os cistos odontogênicos e não-odontogênicos são observados somente nos ossos gnáticos e casuísticas de diferentes regiões têm sido publicadas na literatura de língua inglesa. O objetivo deste trabalho foi determinar a frequência dos cistos odontogênicos e não-odontogênicos diagnosticados no Laboratório de Patologia Oral da UFRJ entre os anos de 1984 até 2015. Essas lesões foram obtidas após revisão dos arquivos da instituição. As características avaliadas foram: (1) tipo de cisto diagnosticado, (2) idade do paciente, (3) gênero do paciente e (4) localização da lesão. Os resultados da frequência de cada tipo de cisto e suas características clínicas foram apresentados de maneira descritiva considerando pacientes de todas as idades, pacientes adultos (maiores que 17 anos) e pacientes jovens (menores que 17 anos). Como resultado, 1141 cistos foram diagnosticados neste período, sendo 1026 (90%) odontogênicos e 105 (10%) nãoodontogênicos. Os cistos odontogênicos mais frequentes foram o cisto radicular (449 casos, 39,3%), cisto dentígero (195 casos, 17%) e o queratocisto odontogênico (147 casos, 12,8%). Os cistos não-odontogênicos mais frequentes foram o cisto do ducto nasopalatino (32 casos, 2,8%), cisto epidermóide (25 casos, 2,1%) e cisto de retenção de muco (17 casos, 1,4%). Os cistos odontogênicos e não-odontogênicos diagnosticas no laboratório de Patologia Oral da UFRJ parecem mostrar um perfil clinicopatológico semelhante ao encontrado em outros estudos do mundo, com poucas variações em relação à idade, gênero e localização preferencial. (AU)

Odontogenic and non-odontogenic cysts are observed only in the gnathic and casuistic bones of different regions have been published in the English-language literature. The objective of this study was to determine the frequency of odontogenic and non-odontogenic cysts diagnosed in the Oral Pathology Laboratory of the Federal University of Rio de Janeiro between 1984 and 2015. These lesions were obtained after reviewing the institution's files. The evaluated features were (1) type of microscopically diagnosed cyst, (2) age, (3) gender, and (4) location of the cyst. The frequency of each type of cyst and its clinical features were descriptivelly presented considering patients of all ages, younger than 17 years, and older than 17 years. One thousand one hundred and forty one cysts were diagnosed in this period, 1026 (90%) of them were odontogenic and 105 (10%) were non-odontogenic. The most frequent odontogenic cysts were radicular cyst (449 cases, 39,3%), dentigerous cyst (195 cases, 17%), and odontogenic keratocyst (147 cases, 12,8%). The most frequent non-odontogenic cyst were the nasopalatine duct cyst (32 cases, 2,8%), epidermoid cyst (25 casos, 2,1%) e mucus retention cyst (17 cases, 1,4%). The odontogenic and non-odontogenic cysts diagnosed in the Oral Pathology Laboratory of the UFRJ seem to show a clinicopathological profile similar to that found in other studies in the world, with few variations in relation to age, gender and preferential location. (AU)

Análise retrospectiva das lesões do complexo oral e maxilofacial do Serviço de Cirurgia oral do Hospital Universitário Clementino Fraga Filho: um estudo retrospectivo de 24 anos / Retrospective analysis of injuries of the oral complex and maxilofacial in Oral Surgery Service of the Hospital Universitário Clementino Fraga Filho: a study retrospective of 24 years

Os estudos epidemiológicos podem auxiliar na identificação da prevalência das lesões em uma determinada população, assim como na coleta de dados relativos a localização, idade, gênero e saúde geral do paciente, bem como hábitos nocivos existentes, e possíveis fatores etiológicos associados. Na literatura, os estudos epidemiológicos das doenças de boca exibem, em sua maioria, uma alta prevalência de lesões benignas de mucosa, principalmente do tipo hiperplásicas, assim como mucoceles, e alterações inflamatórias periapicais. No entanto, a real prevalência das lesões pode variar de acordo com a idade dos pacientes e da origem dos casos. O objetivo deste trabalho foi identificar a prevalência e as características sócio- demográficas de lesões orais dos pacientes encaminhados para tratamento cirúrgico no serviço de Cirurgia Oral do Hospital Universitário Clementino Fraga Filho (HUCFF), da Universidade Federal do Rio de Janeiro. O período de estudo compreendeu de 1989 a 2013, perfazendo 24 anos As lesões diagnosticadas foram classificadas de acordo com a sua natureza. Os dados coletados foram analisados levando-se em conta os valores absolutos e percentuais. Dos 328 casos da amostra, 159 (48,5%) eram pacientes do sexo feminino e 169 (51,5%) pacientes do sexo masculino, e a média de idade geral foi de 34,26 anos. Os cistos e tumores odontogênicos de desenvolvimento ocorreram mais comumente com 154 casos, representando 47,0%. As doenças da polpa e do periápice e as lesões intra-ósseas não odontogênicas foram responsáveis por 18,9% e 10,7% das lesões, respectivamente. Dezenove casos (5,7%) eram lesões hiperplásicas; 16 (4,9%) eram lesões de glândulas salivares; 13 (4%) eram lesões malignas; e 13 (4,0%) eram cistos não- odontogênicos. Dez casos (3,0%) eram de lesões com diagnóstico inconclusivo, e as neoplasias benignas foram as menos comumente diagnosticadas, com apenas 6 casos (1,8%). Levando-se em consideração as lesões de maior prevalência, o cisto radicular foi a patologia mais comumente encontrada representando 16,8% da amostra, seguido do cisto dentígero (15,3%), do ameloblastoma (10,7%), do tumor odontogênico ceratocístico (9,5%) e dos odontomas (5,5%). (AU)

Epidemiological studies can assist in identifying the prevalence of oral lesions in a given population. Other information that can be collected is data on affected sites, patient´s age and gender and overall health, the presence of hazardous habits and associated etiological factors. In the literature, epidemiological studies of oral diseases nearly always exhibit a high prevalence of mucosal benign hyperplastic lesions, as well as mucoceles and periapical inflammatory lesions. However, the actual prevalence of lesions may depend on patient´s age range and in the origin of the cases. The aim of this study was to determine the prevalence and socio-demographic characteristics of odontogenic and non- odontogenic lesions of patients referred for surgical treatment at the Oral Surgery Service of the Clementino Fraga Filho University Hospital (HUCFF), of the Federal University of Rio de Janeiro. The study period totalized 24 years, from 1989 to 2013. The lesions were classified according to their nature. The collected data was analyzed taking into account the absolute values and percentages. Of the 328 sample cases, 159 (48.5%) were female patients and 169 (51.5%) male patients, and the average age was of 34.26 years. Dvelopment Odontogenic Cysts and Tumors occurred more commonly with 154 cases, representing 47.0% of the study group. Pulpal and periapical diseases and non-odontogenic bone lesions accounted for 18.9% and 10.7% cases, respectively. Nineteen cases (5.7%) were hyperplastic lesions; 16 (4.9%) were salivary glands lesions; 13 (4%) were malignant neoplasms; and 13 (4.0%) were nonOdontogenic cysts. Ten cases (3.0%) were represented by lesions with inconclusive diagnosis. Benign neoplasms were the least commonly diagnosed cases, with only 6 tumors (1.8%). Taking into consideration the lesions of higher prevalence, the periapical cyst was the most commonly found oral disease representing 16.8% of the sample, followed by the dentigerous cyst (15.3%), the ameloblastoma (10.7%), the keratocystic odontogenic tumor (9.5%) and the odontomas (5.5%). (AU)

Cystic Conditions of the jawbones: A Review of Early Classification Systems.

Cystic conditions of the jawbones were recognized long before the establishment of the American Academy of Oral Pathology (AAOP) in 1948, but it was around this time when they were studied, characterized, and classified. The history of the classification systems implemented by oral pathologists to study the cystic conditions of the maxillary bones is intimately related with the birth of oral and maxillofacial pathology as a specialty of dentistry. The purpose of this paper is to review the early classification systems proposed for the cystic conditions of the jawbones.

[Dissertations 25 years after date 8. Non-odontogenic cysts of the oral regions]. / Proefschriften 25 jaar na dato 8. Niet-dentogene cysten in het hoofd-hals-gebied.

Non-odontogenic cysts are rare. Today, only 2 of the 18 non-odontogenic cysts that were described in 1982 are still classified as such: the nasopalatine duct cyst and the nasolabial cyst. The others are now classified in other groups. In the general practice the nasopalatine duct cyst is mostly seen as a swelling of the palate, just behind the central incisors. The nasolabial cyst is more rare and can be characterized as a paranasal swelling. Treatment of both cysts consists of surgical removal by intraoral approach. It is advisable to refer all cases of suspected non-odontogenic cysts, with the exception of the mucosal antral cyst, to an oral and maxillofacial surgeon in order to have the diagnosis confirmed.

New developments in selected cysts of the jaws.

The number and variety of cysts that occur in the jaws are greater than those in any other part of the body. Consequently, dental practitioners must keep up with advances in this field, including the definition of new entities, such as the glandular odontogenic cyst; the deletion of the old incorrect concept of maxillofacial fissural cysts, including the globulo-maxillary cyst; and the advances in the molecular biology of established cysts, such as the dentigerous cyst and the odontogenic keratocyst.

Inflammatory paradental cysts in the globulomaxillary region.

Cysts located in the maxilla between the roots of an erupted lateral incisor and a canine were studied. Radicular cysts were excluded by the prerequisite of a positive pulp vitality test in both adjacent teeth, and odontogenic keratocysts were excluded by histologic examination. In the period from 1971-1987, 8 cysts were found which fulfilled the criteria for inclusion. The average age of the patients was 18.8 yr. All cysts were lined by a hyperplastic non-keratinized stratified squamous epithelium and there was always a heavy infiltrate of inflammatory cells in the connective tissue. The clinical and histologic features were similar to those previously reported for inflammatory paradental cysts (IPC) in the mandible. Therefore, it seems justified to suggest that some of the previously described globulomaxillary cysts are in fact IPCs.