Presencia de lesiones quísticas en sacos pericoronarios de terceros molares mandibulares / Presence of cystic lesions in pericoronary sacs of mandibular third molars

Introducción: a pesar de que un tercer molar no erupcionado repre- senta un riesgo de formación quística, la práctica clínica desestima el análisis histopatológico de los folículos de dichos molares. Objetivo: identificar la frecuencia de lesiones quísticas en los sacos pericoronarios de terceros molares mandibulares. Material y métodos: estudio des- criptivo, transversal, analítico y observacional, en donde se incluyeron sacos pericoronarios de terceros molares mandibulares para su análisis histopatológico, descripción de características clínico-radiográficas y su asociación con la presencia de cambios histológicos o lesiones quís- ticas. Resultados: se incluyeron 48 muestras de sacos pericoronarios, la histopatología de los sacos pericoronarios mostró que 83.3% tenían algún tipo de alteración: 13 quistes paradentales (27.1%), cuatro quistes dentígeros (8.3%), 12 folículos hiperplásicos (25.0%) y 11 folículos inflamados (22.9%). La presencia de lesiones quísticas en la población fue de 35.4%. Se detectó asociación estadísticamente significativa entre el sexo y la presencia de lesiones quísticas (p = 0.039) y entre el nivel de erupción y la presencia de cambios histológicos (p = 0.046). Con- clusiones: la frecuencia de lesiones quísticas o cambios histológicos en folículos de terceros molares mandibulares es alta, principalmente en molares parcialmente erupcionados o submucosos y sin importar la ausencia de sintomatología o alteraciones radiográficas (AU))

Introduction: although a non-erupted third molar represents a risk of cystic formation; clinical practice rejects the histopathological analysis of the follicles of said molars. Objective: identify the frequency of the histopathological changes in pericoronary sacs of mandibular third molars. Material and methods: descriptive cross- sectional, observational and analytic study, where pericoronary sacs of mandibular third molars were included for histopathological analysis, description of clinical-radiographic characteristics and their association with the presence of histological changes or cystic lesions. Results: 48 samples of pericoronary sacs were included, the histopathology of the pericoronary sacs showed 83.3% had some type of alteration: 13 paradental cysts (27.1%), four dentigerous cysts (8.3%), 12 hyperplastic follicles (25.0%) and 11 inflamed follicles (22.9%). The presence of cystic lesions in the population was 35.4%. A statistically significant association was detected between sex and the presence of cystic lesions (p = 0.039); and between the level of eruption and the presence of histological changes (p = 0.046). Conclusions: the frequency of cystic lesions or histological changes in mandibular third molar follicles is high, mainly in partially erupted or submucosal molars and regardless of the absence of symptoms or radiographic alterations (AU)

Epidemiological study of intraosseous lesions of the stomatognathic or maxillomandibular complex diagnosed by a Reference Centre in Brazil from 2006-2017.

This epidemiological study was designed to find out the incidence and factors associated with the occurrence of intraosseous lesions diagnosed at a Reference Centre in Brazil. We included all patients diagnosed with intraosseous lesions (cyst, tumour, bone-associated lesion, and periapical disease) during the period 2006-2017, and analysed the association between some sociodemographic and clinical variables and the types of lesion. There was a total of 290 intraosseous lesions, the most common being odontogenic cysts. There was a significant association between age and odontogenic tumours (p=0.001). In relation to the histopathological diagnosis, root cysts were the most common (n=57), followed by dentigerous cysts (n=26). The lesions studied were seen most often in women between the second and fourth decades of life, odontogenic cysts being the most common type found. We know of few publications of similar epidemiological work, either in Brazil or in the rest of the world, so we suggest that more such studies are made.

A retrospective analysis of oral and maxillofacial pathology in a pediatric population from Rio de Janeiro-Brazil over a 75-year period

BACKGROUND: The aim of this study was to analyze the distribution of oral and maxillofacial lesions affecting children and adolescents patients from a single oral pathology laboratory from Rio de Janeiro, Brazil. MATERIAL AND METHODS: Oral and maxillofacial lesions biopsied in patients younger than 19-years were retrieved from the oral pathology files of the Department of Oral Diagnosis and Pathology, School of Dentistry, Federal University of Rio de Janeiro over a 75-year period (1942-2017). The clinical data and the diagnoses of each case were included in a Microsoft Excel(R) database, being classified into 13 categories according to the etiology. A descriptive analysis of the variables age, gender and final diagnosis was made. RESULTS: From 19.095 lesions diagnosed in this period, 2408 (12.61%) were from patients aged 0 to19 years, with a higher incidence in females in the second decade. Salivary gland pathology was the most common group of lesions (24.30%), followed by reactive lesions (16.82%) and odontogenic cysts (14.66%). Mucocele was the most common lesion (21.72%), followed by dentigerous cyst (6.48%) and fibrous hyperplasia (6.44%). Malignant lesions were observed in 1.12% of all cases with Burkitt lymphoma as the most frequent. CONCLUSIONS: Our results were similar to previous studies and knowledge of these data may contribute to the understanding of oral lesions that most commonly affects children

Bi-maxillary dentigerous cyst in a non-syndromic child - review of literature with a case presentation.

Dentigerous cysts are the most common developmental odontogenic cysts of the jaw, which usually occur in the second and third decade of life. It is most frequently associated with impacted mandibular third molar teeth and impacted canines. Bilateral/multiple dentigerous cysts are rare and typically associated with developmental syndromes. Non-syndromic dentigerous cyst occurring bilaterally or involving both arches at the same time is very rare. Here, we discuss the review of literature with a case of unusual occurrence of non-syndromic bi-maxillary dentigerous cysts in a child.

Estudo de 199 casos de cisto dentígero / Study of 199 cases of dentigerous cyst

Introdução: o cisto dentígero pode originar doenças graves como ameloblastoma e tumor odontogênico ceratocístico, estes apresentam características clínicas e radiográficas similares e podem levar a diagnósticos clínicos diversos. Objetivo: estudar a prevalência de cistos dentígeros em casos encaminhados ao laboratório de patologia da Faculdade de Odontologia de Passo Fundo no período de 01 de março de 2002 até 01 de fevereiro de 2014. Método: este estudo transversal analisou laudos histopatológicos do laboratório de patologia da Universidade de Passo Fundo durante o período de 12 anos, com diagnóstico de cisto dentígero. Os 199 casos de cisto dentígero em 188 pacientes (98 homens e 90 mulheres, com prevalência de idade entre 20 e 24 anos, e leucodermas. Resultados e Discussão: ocorreram 104 casos nos terceiros molares inferiores. Não houve diferença significativa entre raça e gênero, bem como idade e raça. Quando a presença de sintomas foi relatada (11,17%), os terceiros molares mandibular estavam predominantemente envolvidos (54,2%) e os caninos obtiveram o maior percentual de acerto no diagnóstico provável do cisto (50%). Conclusão: trata-se de um cisto mandibular muito comum com predileção masculina, preferência pela segunda década com prevalência em leucodermas e geralmente assintomático. Quando esta condição estiver atrelada a imagem radiográfica sugestiva de cisto dentígero, remoção cirúrgica do dente impactado e exames histopatológico estão indicados nos ossos maxilares.

Introduction: the dentigerous cyst can cause serious diseases such as ameloblastoma and odontogenic tumor keratocystic, these have clinical characteristics and radiographic and can lead to several clinical diagnoses. Objective: to investigate the prevalence of dentigerous cysts in the cases refered to the pathology laboratory of the University of Passo Fundo during the periodfrom March 1st, 2002 to 1st February, 2014. Method: this cross-sectional study analyzed histopathological reports with a diagnosis of dentigerous cyst from the pathology laboratory at the University of Passo Fundo during the period of 12 years. Results and Discussion: the 199 cases of dentigerous cyst in 188 patients (98 men and 90 women, with a prevalence of age between 20 and 24, and Caucasian. There were 104 cases in the lower third molars. There was no significant difference between race and gender as well as age and race. When the presence of symptoms has been reported (11.17%), mandibular molars third were predominantly involved (54.2%) and the canines had the highest percentage of correct answers in the probable diagnosis of the cyst (50%). Conclusion: this is a very common mandibular cyst with male predilection, preference for the second decade with prevalence in Caucasian and usually asymptomatic. When this condition is linked to suggestive radiographic image of dentigerous cyst, surgical removal of impacted tooth and histopathological examinations are indicated in the jaws.

Dentigerous Cysts of Maxillofacial Region- Clinical, Radiographic and Biochemical Analysis.

BACKGROUND: Dentigerous cyst is the second most common type of odontogenic cysts that encloses the crown of an unerupted tooth by expansion of its follicle due to the collection of cystic fluid. In view of the capability of these lesions attaining a marked size if not diagnosed early and treated properly, the present study was done based on the clinical and radiographic presentation of the dentigerous cyst in addition to the analysis of the cystic contents. OBJECTIVE: The present study reported 14 cases of dentigerous cysts (DC) with their incidence and relative distribution of the maxillofacial region along with the clinical and radiographic features and biochemical analysis of cystic fluid. METHOD: The study was conducted at Sri Govind Tricentenary Dental College, Hospital and Research Institute, Gurgaon, Haryana for a period of one year and six months. A detailed case history and thorough clinical examination was done for the patients who were provisionally found to have odontogenic cysts. Necessary radiographs, aspiration of the cystic fluid and incisional biopsy were performed to the 14 patients who were provisionally diagnosed with dentigerous cysts (DC) after obtaining the informed consent and the cystic fluid was subjected to biochemical analysis. RESULTS: Majority of the affected patients with DC were in their second decade and showed more predilection for mandible with a male predominance. The area of predilection was third molar region in the mandible and it is the canine region in maxilla. All the cases were associated with impacted teeth and majority showed expansion of the buccal/labial cortical plate. The various biochemical variables (total protein content, albumin, globulin and albumin: globulin ratio) were also assessed in the present study. CONCLUSION: The awareness of protean features of DC evident through this study is essential for the general as well as specialty practitioners for the accurate diagnosis and proper treatment planning of these non cancerous but potentially destructive lesions and also opens new avenues for further research.

Oral and maxillofacial lesions in a Thai pediatric population: a retrospective review from two dental schools.

OBJECTIVE: To determine the prevalence of oral and maxillofacial lesions in a Thai pediatric population. MATERIAL AND METHOD: Oral biopsy records from pediatric patients between the ages of 0 and 15 years in the files ofFaculty of Dentistry, Mahidol University, and the files of Faculty of Dentistry, Khon Kaen University were reviewed. The patients were divided into three age groups, including 0 to 5, 6 to 10, and 11 to 15 years. Excluding the diagnosis of normal tissues, the oral and maxillofacial lesions were classified into nine categories. RESULTS: Of 13,050 biopsied oral and maxillofacial lesions, 1,389 cases (10.6%) came from pediatric patients. The largest number of lesions was odontogenic cysts and tumors, followed by inflammatory and reactive lesions, and salivary gland pathology The top ten most prevalent lesions contributed 73% of all oral biopsies. The most common lesion was dentigerous cyst, followed by mucocele and pyogenic granuloma. CONCLUSION: The vast majority of oral diseases in children were benign and related to either developmental or tissue reaction, while malignant lesions were found in a very small proportion of all oral biopsies.

Prevalência de cistos dentígeros na Universidade Federal do Paraná / Dentigerous cysts prevalence at Federal University of Paraná

O cisto dentígero destaca-se como o mais comum entre os cistos odontogênicos de desenvolvimento dos ossos maxilares. Frequentemente são encontrados em exames radiográficos de rotina devido a alterações na cronologia de erupção dentária. O tratamento dessas lesões varia de acordo com a presença de sintomatologia dolorosa, tamanho e proximidade com estruturas anatômicas nobres. O objetivo deste trabalho foi avaliar a prevalência de cisto dentígero no Serviço de Cirurgia e Traumatologia Buco-Maxilo-Facial da Universidade Federal do Paraná, entre 2008 e 2010. Durante esse período, foram avaliados 24 prontuários de pacientes com cisto dentígero. Dados, como gênero, idade, localização e forma de tratamento da lesão, foram coletados. Os resultados mostraram predileção pelo gênero masculino (63%), com maior incidência na segunda década de vida (42%), estando geralmente localizado na região posterior da mandíbula (62%). A principal forma de tratamento foi a enucleação associada ou não à extração do elemento dentário envolvido (75%). Todos os tratamentos mostraram-se eficazes com regressão da lesão após acompanhamento clínico e radiográfico... (AU)

The dentigerous cyst stands out as the most common among odontogenic cysts development of the jaws. They are often found in routine radiographic examination due to changes in timing of tooth eruption. The treatment of these lesions varies according to the presence of painful symptoms, size and proximity to significant anatomical structures. The objective of this study was to evaluate the prevalence of dentigerous cystin Surgery and Traumatology Oral and Maxillofacial at Federal University of Paraná between 2008 and 2010. During this period were evaluated 24 medical records of patients with dentigerous cyst. Data such as gender, age, location and method of treatment of the injury were collected. The results showed a predominance of male patients (63%), with the highest incidence in the second decade of life (42%) and is usually located in the posterior mandible (62%). The main form of treatment was enucleation with or without the extraction of the involved tooth (75%). All treatments were effective with regression of the lesion after clinical and radiographic follow-up... (AU)

A retrospective analysis of oral and maxillofacial pathology in an Australian paediatric population.

BACKGROUND: The prevalence of oral and maxillofacial pathology has not previously been reported in the Australian paediatric population. This study aimed to audit a large pathology service to provide insight into the prevalence of oral and maxillofacial pathology. METHODS: Written records of a major Australian oral pathology service were imported into an electronic database. Age, gender and histological diagnosis were assessed. Prevalence of histological diagnoses as a percentage of the major diagnostic categories and of the whole sample were calculated, as well as gender predilections and mean age of presentation of disease. RESULTS: A total of 1305 oral pathology specimens, collected from paediatric patients aged 16 and under were included in the analysis. The most common pathology was dental pathology (24.4%), followed by odontogenic cysts (18.5%) and mucosal pathology (17.0%). The most frequently encountered lesion was the dentigerous cyst (9.4%), followed by fibrous hyperplasia (8.3%), radicular cyst (5.2%) and chronic periapical granuloma (5.2%). CONCLUSIONS: In the paediatric population, dental pathology and specifically, the dentigerous cyst is the most common pathology type sent for histopathology, suggesting a high prevalence of pathology of dental origin occurring in Australian children.

Prevalence of developmental odontogenic cysts in children and adolescents with emphasis on dentigerous cyst and odontogenic keratocyst (keratocystic odontogenic tumor).

OBJECTIVE: To investigate the incidence and prevalence of developmental odontogenic cysts in children and adolescents and compare the features of the two most common types, dentigerous cyst and keratocystic odontogenic tumor (KCOT). STUDY DESIGN: A retrospective review in a series of 369 patients with all histological diagnoses of developmental odontogenic cysts in children (≤12 years) and adolescents (13-18 years) was conducted. RESULTS: Among these, 361 (97.8%) patients were diagnosed as dentigerous cyst (n = 281) and KCOT (n = 80), with the male-to-female ratios of dentigerous cyst and KCOT both being 2:1. The average age of the patients with KCOT was older than that of those with dentigerous cyst (14.7 years vs 11.8 years, p < 0.001). Dentigerous cyst (59.1%) was more common in children, but KCOT (78.8%) was more common in adolescents (p < 0.001). Dentigerous cyst (57.6%) predominantly located on the maxilla, but KCOT (60.3%) predominantly located on the mandible (p = 0.010). CONCLUSIONS: Adolescent patients with lesions located on the mandible would favor KCOT over dentigerous cyst. This study aids in better knowledge of the prevalence of developmental odontogenic cysts in a large pediatric population, and shows that a well-supported early diagnosis is indispensable for a more adequate treatment.

Frequency of odontogenic cysts and tumors: a systematic review.

A systematic review of the literature from 1993 to 2011 was undertaken examining frequency data of the most common odontogenic cysts and tumors. Seven inclusion criteria were met for the paper to be incorporated. In the preliminary search 5231 papers were identified, of these 26 papers met the inclusion criteria. There were 18 297 odontogenic cysts reported. Of these there were 9982 (54.6%) radicular cysts, 3772 (20.6%) dentigerous cysts and 2145 (11.7%) keratocystic odontogenic tumors. With the reclassification of keratocystic odontogenic tumor in 2005 as an odontogenic tumor, there were 8129 odontogenic tumors reported with 3001 (36.9%) ameloblastomas, 1163 (14.3%) keratocystic odontogenic tumors, 533 (6.5%) odontogenic myxomas, 337 (4.1%) adenomatoid odontogenic tumors and 127 (1.6%) ameloblastic fibromas. This systematic review found that odontogenic cysts are 2.25 times more frequent than odontogenic tumors. The most frequent odontogenic cyst and tumor were the radicular cyst and ameloblastoma respectively.

A prospective epidemiological study for odontogenic and non-odontogenic lesions of the maxilla and mandible in Queensland.

OBJECTIVES: Investigate the epidemiological profile for odontogenic and non-odontogenic intra-osseous lesions in the Queensland population (4.56 million) over 12 months. STUDY DESIGN: The following data were prospectively collected from all Queensland histopathology laboratories in 2011: gender, age at diagnosis, location of lesion, histopathological diagnosis of the lesion and the patient's postcode. RESULTS: Six-hundred and thirty-three lesions were collected, comprising 540 odontogenic cysts and 93 odontogenic tumors. Radicular cyst was the most frequently diagnosed lesion (247/540, 45.7%). The overall incidence of odontogenic tumors was 20.4/million. Keratocystic odontogenic tumor was the highest (15.1/million), followed by ameloblastoma (2.41/million) with odontoma and calcifying cystic odontogenic tumor having the same incidence (1.1/million). The 39 non-odontogenic intra-osseous lesions had an overall incidence of 8.55/million. Nasopalatine cysts had an incidence of 2.19/million, followed by fibrous dysplasia and central giant cell granuloma (1.97/million). CONCLUSIONS: Odontogenic tumors are 5 times less common than cysts. Non-odontogenic lesions are rare, with benign lesions 6.8 times more common than malignant lesions.

A clinicopathological study of 338 dentigerous cysts.

BACKGROUND: Dentigerous cyst (DC) is one of the most common developmental odontogenic cysts. This hospital-based retrospective study evaluated the clinical and histopathological features of 338 DCs in Taiwanese patients. METHODS: In this study, 338 consecutive cases of DCs were collected from January 1995 to December 2009. The demographic data and clinicopathological features of these DC cases were reviewed and analyzed. RESULTS: The 338 DCs were taken from 332 patients (212 men and 120 women, mean age 33.0 years, range 5-83 years). There was a significant difference in the mean age between male and female patients (P < 0.05). Of the 338 DCs, 122 were found in the maxilla and 216 in the mandible. The most common site for DCs was the mandibular molar region (169 cases) and the most frequently involved tooth was the mandibular third molar (153 cases). Forty-six of the 338 DCs were found to be associated with supernumerary teeth. Microscopically, 317 cysts were lined by stratified squamous epithelium, 9 by mucoepidermoid-typed epithelium, and 12 by ciliated pseudostratified columnar epithelium. Hyaline bodies of Rushton, odontogenic epithelial rests, cholesterol clefts, foamy histiocytes, hemosiderin-laden macrophages, and dystrophic calcifications were discovered in 11, 78, 90, 33, 62 and 45 DCs, respectively. CONCLUSION: Our results indicate that DCs of Taiwanese patients have a male predominance and occur more frequently in patients between 10 and 29 years of age. The most commonly affected site for DCs is the mandibular molar region and the most frequently involved tooth is the mandibular third molar.

Investigation of the transmigrated canine in an orthodontic patient population.

OBJECTIVE: To investigate the prevalence, demographic and clinical characteristics of transmigrated canines in a south Indian orthodontic patient population. DESIGN: Retrospective observational study. SETTING: Manipal University, Manipal, India. SUBJECTS AND METHODS: Panoramic radiographs of 3500 patients were examined and data collected regarding the number and side of transmigrated canines, sex and age of patients, any other associated pathologies and subsequent treatment. Transmigrated canines were classified according to Mupparapu's classification. RESULTS: The prevalence of transmigrated canines in this population was found to be 0.46% of which, seven were males (age: 17-51 years) and nine were females (age: 17-35 years). All transmigrated canines were unilateral and impacted. Eleven canines migrated from the left to the right side, and five migrated from the right to the left. Of the 16 patients, 13 had retained primary canines and 3 had exfoliated primary canines. Eight canines exhibited a type 1 transmigratory pattern, type 2, type 4 and type 5 transmigratory patterns were exhibited by two canines each. One of the canines was classified as type 3. Three canines were associated with dentigerous cyst formation. Four cases were treated by orthodontic traction, while one was removed surgically. Others were observed periodically. CONCLUSIONS: Diagnosis of transmigration at earlier stages is important to prevent more complex occlusal problems.

Prevalence and distribution of odontogenic and nonodontogenic cysts in a Turkish Population

Objective : To determine the relative frequency and distribution of odontogenic and nonodontogenic cysts in alarge Turkish population. Study Design A retrospective survey of jaw cysts was undertaken at the Oral Diagnosis and Radiology and Oral and Maxillofacial Surgery Department, Ondokuz Mayýs University Dental School, Samsun, Turkey . Data were retrieved from clinical files, imaging, and histopathology reports from 2000 to 2008; a total of 12,350 patients were included . In each case, we analyzed age, gender, type and number of cysts, and cyst location . Imaging pat -terns and pathologies associated with cystic lesions were also determined .Results : The prevalence of odontogenic and nonodontogenic cysts was 3.51%; males were affected more frequently than females . There were 452 odontogenic cysts (98.5%) and seven nonodontogenic cysts (1.5%). The most frequent odontogenic cyst was radicular (54.7%), followed by dentigerous (26.6%), residual (13.7%), odontogenic keratocyst (3.3%), and lateral periodontal cyst (0.2%). Nasopalatine duct cyst (1.5%) was the only nonodontogenic cyst . By age, cysts peaked in the third decade (24.2%). Concerning location, no statistically significant difference was found between the maxilla and mandible (p>0.05). The most frequent radiological feature of these lesions was unilocular cyst (93.7%). Pathologies associated with cystic lesions occurred in 14.7%.Conclusion : The prevalence of both odontogenic and nonodontogenic cysts were lower than that reported in many other studies . In our study population, cysts were mainly inflammatory in origin (AU)

Analysis of demographic data obtained from pathology records.

INTRODUCTION: Pathologists commonly analyse patient data obtained from pathology records. Such information is useful in that it might provide an indication of changing patterns of disease, or of the aetio-pathogenesis of a disease process, but such data is seldom standardised. AIM: To determine to what extent the lack of standardisation may influence the resultant data and the conclusions drawn. MATERIALS AND METHODS: Pathology reports of all cysts diagnosed from 1994 to 2004 were retrieved. The diagnosis and site of the cyst, and the age, gender and race of patient were analysed. Comparative data from 1958 to 1992 was obtained from the text "Cysts of the oral regions". The data from the different periods was statistically compared. Only the four most common cysts were included: radicular, dentigerous, odontogenic keratocyst and nasopalatine duct cysts. RESULTS: There was no difference in frequency and site of cysts or in age of patients. Statistically significant differences were found in the gender and race comparisons. CONCLUSION: Do the differences reflect a changing pattern of disease or are they due to changes in the demographics of the patient pool from which the surgical specimens were obtained? We favour the latter. Awareness of the fact that data from either survey is not reliable due to lack of standardisation is pertinent to avoid drawing fundamental conclusions from such data.

Diagnóstico y actitud terapéutica del quiste dentigero. Aportación de dos casos / Diagnosis and therapeutic approach of the dentigerous cyst. Presentation of two cases

El quiste folicular o dentígero deriva del epitelio reducido del órgano del esmalte. Se presenta en la 2º y 4º década de la vida. Hay autores que manifiestan mayor frecuencia en el sexo femenino, mientras que otros exponen que afecta a ambos sexos por igual. Con respecto a la localización, es más habitual en mandíbula que en maxilar. Es el segundo quiste más frecuente seguido del radicular. Se asocia a dientes retenidos como el tercer molar, canino superior, segundo premolar inferior o supernumerarios como los mesiodens. Su patrón radiológico, es una imagen radiolúcida, unilocular, redondeada, con un límite nítido que engloba la corona del diente implicado, puede haber rizólisis en los dientes adyacentes y expansión de tablas óseas. Debido a su elevado potencial de crecimiento, puede producir asimetrías, alteraciones nerviosas por compresión, desplazar dientes e incluso malignizar a ameloblastoma, carcinoma mucoepidermoide oepidermoide. Por este motivo, la actitud terapéutica cobra importancia. Se podrá marsupializar, si tiene una gran extensión, para enuclearlo en una segunda cirugía, o realizar la exéresis del quiste directamente con el diente implicado para evitarrecidivas. Se exponen dos casos, el primero corresponde a un varón, de 7 años, derivado por su ortodoncista, tras realizar una radiografía panorámica para valorar una alteración en el patrón eruptivo, que revela un quiste en el maxilar superior. El segundo caso es una paciente de 25 años, sexo femenino, que acude a consulta en busca de un tratamiento implantológico para rehabilitar la zona edéntula del tercer cuadrante. Al realizar una prueba radiológica rutinaria se haya de forma casual, un quiste folicular que engloba al segundo premolar inferior izquierdo. Los casos que se presentan a continuación tienen como objetivos resaltar la importancia de un acertado diagnóstico en este tipo de patología así como escoger la actitud terapéutica más adecuada (AU)

The follicular or dentigerous cyst derives from the reduced epithelium of the enamel organ. It presents in the 2nd and 4th decade of life. There are authors that indicate greater frequency in females, while others express that it affects both genders equally. With respect to the location, it is more usual in the mandible than in the maxilla. It is the second most frequent cyst followed by the radicular cyst. It is associated with retained teeth such as the third molar, upper canine, second lower premolar or supernumerary teeth such as the mesiodens. It radiological pattern is a radio lucid image, unilocular, rounded, with a clear limit that encompasses the crown of the involved tooth, there may be rhizolysis in the adjacent teeth and expansion of osseous tables. Due to its highpotential for growth, it can produce asymmetries, nerve alterations by compression, move teeth and even become malignant ameloblastoma, mucoepidermoid or epidermoid carcinoma. For this reason, the therapeutic approach becomes important. It can be marsupialized, if it is of a large size, in order to enucleate it in a second surgery, or perform the exeresis of the cyst directly with the involved tooth in order to avoid recurrences. Two cases are presented; the first corresponds to amale, of 7 years of age, referred by his orthodontist after performing a panoramic x-ray to (..) (AU)

Quiste dentígero / Dentigerous cyst

Se presenta el caso clínico de una paciente de sexo femenino, la cual acude al Servicio de Cirugía Bucomaxilofacial de la Escuela de Odontología de la Universidad Argentina John F. Kennedy por una imagen radiográfica del lado derecho del maxilar inferior de. Intrabucalmente presentaba expansión de la tabla vestibular. Radiográficamente se observa una imagen radiolúcida del lado derecho del maxilar inferior que contiene el tercer molar inferior derecho. Se realizó una revisión bibliográfica de esta entidad patológica, sus características clínicas, radiográficas, histopatológicas y tratamiento.