Calcifying odontogenic cyst : a 26-year retrospective clinicopathological analysis and immunohistochemical study

Background: To identify the prevalence and clinicopathological profile of calcifying odontogenic cysts (COC) stored at an oral pathology service, and to analyze the immunoexpression of cyclooxygenase 2 (COX-2) and cyclin D1 (CD1) in these cysts. Material and Methods: After a retrospective analysis (1990-2016) carried out to identify cases of COC, a sample of 12 cases was selected for immunohistochemical analysis of COX-2 and CD1 by the immunoperoxidase technique. Protein expression was evaluated semiquantitatively by attributing a score of 0 to 3 (0 = no staining; 1 = 1-25%; 2 = 26-50%, and 3 = >51% immunopositive cells). Results: Twenty cases of COC were diagnosed over the study period. These cysts were more common in the posterior mandible and in men (male-to-female ratio of 1.2:1), with a mean age of 29.9 years. Among the 12 cases analyzed, immunoexpression of COX-2 was observed only in the inflammatory infiltrate in 50% of the cysts (n = 6). Protein CD1 was detected (score 1) in 66.6% of cases (n = 8), and COX-2 was negative in 50% (n = 6). Conclusions: The prevalence of COC among all odontogenic cysts was 3.5%, representing an uncommon lesion. Immunohistochemical analysis suggested that COX-2 does not participate in lesion progression. The cell proliferation index of COC was low, as demonstrated by the expression of CD1, suggesting a proliferative profile compatible with more indolent lesion

Lingual Lymphangioma Ablation With High Power Diode Laser: A Case Report

Introduction: Lymphangioma is a rare vascular anomaly that affects the lymphatic vessels. Its etiology is not yet clear and it usually occurs in the head and neck region. This pathology is commonly diagnosed in childhood and there is no consensus about the most effective treatment of it.Case Report: We report a case of lymphangioma located on the dorsum of the tongue in a 9-year-old boy, with the clinical appearance of small transparent vesicles similar to “frog-eggs”. The diagnosis was defined according to the clinical aspect and ultrasound images. The treatment performed consisted of two sessions of ablation with a high-power diode laser.Conclusion: High-intensity diode laser ablation was a safe and effective tool for the treatment of this lesion in the tongue, which provided the patient with a faster, efficient transoperative period and a more comfortable postoperative period.

Nonsyndromic cleft lip and/or palate : a multicenter study of the dental anomalies involved

Nonsyndromic cleft lip and/or palate (NSCL/P) is the most common craniofacial malformation. Due to the anatomical defect present in the alveolar process, these patients tend to exhibit more dental anomalies. The aim of this study was to identify the prevalence of dental anomalies in patients with NSCL/P by obtaining orthodontic documentation from Brazilian Centers for cleft lip and palate treatment. A retrospective analysis (2000-2014) was conducted on orthodontic archives, radiographs and medical records of NSCL/P of 524 patients under orthodontic treatment. Panoramic radiographs and intra-oral photographs were examined to identify these anomalies. Categorical variables were expressed in terms of frequencies and percentages and analyzed using the Chi-Square test. The level of significance was set at p?0.05 in all analyses. Approximately 83.3% of the individuals had at least one dental anomaly. Tooth agenesis was the most common abnormality found in those patients (87.8%) (p<0.001). Also, the largest number of dental anomalies was detected in the group of unilateral left clefts. The prevalence of dental anomalies in the present sample of NSCL/P patients was high and reached the highest levels in patients with alveolar bone clefts. This study describes the most common dental anomalies observed in patients with NSCL/P. These abnormalities can cause significant problems that may be solved or minimized by early diagnosis and treatment

Actinic cheilitis and lip squamous cell carcinoma: multicenter study

Submitted by Bruno Xavier ([email protected]) on 2019-11-06T16:22:41Z No. of bitstreams: 2 license_rdf: 811 bytes, checksum: cfd6801dba008cb6adbd9838b81582ab (MD5) Dissertação Leni-pós-correção.pdf: 1311666 bytes, checksum: 4dc3da3f4f9640ae7162240124d0662e (MD5)Approved for entry into archive by Izabel Miranda ([email protected]) on 2019-11-11T03:15:48Z (GMT) No. of bitstreams: 2 license_rdf: 811 bytes, checksum: cfd6801dba008cb6adbd9838b81582ab (MD5) Dissertação Leni-pós-correção.pdf: 1311666 bytes, checksum: 4dc3da3f4f9640ae7162240124d0662e (MD5)Made available in DSpace on 2019-11-20T23:32:53Z (GMT). No. of bitstreams: 2 license_rdf: 811 bytes, checksum: cfd6801dba008cb6adbd9838b81582ab (MD5) Dissertação Leni-pós-correção.pdf: 1311666 bytes, checksum: 4dc3da3f4f9640ae7162240124d0662e (MD5) Previous issue date: 2019-07-04CAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível SuperiorEste estudo investigou a frequência da queilite actínica (QA) e do carcinoma de células escamosas de lábio (CCEL) em diferentes regiões geográficas do Brasil realizando uma análise temporal dos casos por década. Também se estabeleceu o perfil dos pacientes e analisou os aspectos clínicos e histopatológicos. Em uma análise retrospectiva (1953-2018), arquivos de biópsias de 10 centros de Patologia Oral e Maxilofacial localizados em diferentes estados do Brasil: Pará, Rio Grande do Norte, Paraíba, Pernambuco, Rio Grande do Sul, Minas Gerais, Rio de Janeiro, São Paulo e Goiás foram analisados. O perfil da amostra, características clínicas e histopatológicas foram avaliados descritivamente e estatisticamente através dos testes qui-quadrado, ANOVA e t-Student utilizando o programa SPSS versão 23.0. Os laudos histopatológicos de QA e CCEL foram examinados de acordo com a classificação da Organização Mundial de Saúde (OMS) (2017). As análises estatísticas foram feitas utilizando o programa Dos 198.709 espécimes de biópsias, 2.017 casos de QA e 850 casos de CCEL foram avaliados, representando 1,0 e 0,4% das lesões orais, respectivamente. Em geral, indivíduos do sexo masculino (nQA=1.439, 71,4%; nCCEL=673, 79,3%), brancos (nQA=1.640, 87,3%; nCCEL=726, 91,3%), na sétima década de vida (nQA=570, 29,8%; nCCEL=222, 27,4%) com acometimento do lábio inferior (nQA=1.990, 98,7%; nCCEL=827, 97,3%) foram os mais afetados. Indivíduos fumantes e consumidores de álcool tiveram um maior grau de invasão nos casos de CCEL (p=0,004 e p=0,020) bem como indivíduos com história prévia de QA (p=0,018). A QA e o CCEL em estágios iniciais ainda são lesões subnotificadas no Brasil e negligenciadas por parte da população acometida. Novos dados sobre as características sociodemográficas e clinicopatológicas de 2.017 casos de QA e 850 casos de CCEL foram adicionados à literatura. Essa caracterização em um país tão grande e com tantas diferenças regionais como o Brasil fortalece evidências para clínicos, dermatologistas, estomatologistas e oncologistas e para o desenvolvimento de políticas públicas na prevenção dessas lesões na população brasileiraThis study investigated the frequency of actinic cheilitis (AC) and lip squamous cell carcinoma (LSCC) in different geographic regions of Brazil, making a temporal analysis of the cases per decade. It also established the profile of the patients with this lesion and analyzed the clinical and histopathological aspects. In a retrospective analysis (1953-2018), biopsy files of 10 Oral and Maxillofacial Pathology centers located in different states of Brazil: Pará, Rio Grande do Norte, Paraíba, Pernambuco, Rio Grande do Sul, Minas Gerais, Rio de Janeiro , São Paulo and Goiás were analyzed. The sample profile, clinical and histopathological characteristics were descriptively and statistically evaluated by chi-square, ANOVA and t-Student tests using the SPSS program version 23.0. Histopathological data of AC and LSCC were examined according to the World Health Organization (WHO) classification (2017). Of 198,709 specimens of biopsies analyzed, 2,017 cases of AC and 850 cases of LSCC were surveyed, representing 1.0 and 0.4% of the oral lesions, respectively. Overall, male patients (nAC=1,439, 71.4%; nLSCC=673, 79.3%), white (nAC=1,640, 87.3%; nLSCC=726, 91.3%), in their seventh decade of life (nAC = 570, 29.8%, nLSCC = 222, 27.4%) with involvement of the lower lip (nAC = 1.990, 98.7%, nLSCC = 827, 97.3%) were the most affected. Individuals smokers and alcohol users had a higher invasion grade in cases of LSCC (p=0.004 and p=0.020) as well as individuals with previous history of AC (p=0.018). The AC and the LSCC in early stage are still very underreported lesions in Brazil and neglected by the affected population. Novel data on the sociodemographic and clinicopathological features of 2,017 cases of AC and 850 cases of LSCC have been added to the literature. This characterization in such a large country and with so many regional differences as Brazil strengthens evidence for clinicians, dermatologists, stomatologists and oncologists and for the development of public policies for the prevention of these lesions in the Brazilian population. Keywords: Cheilitis. Neoplasms. Carcinoma squamous cell. Solar radiatio

Oral conditions of children with microcephaly associated with congenital Zika syndrome: a cross-sectional study

Abstract The aim of the present study was to compare the oral conditions of children with congenital Zika syndrome (CZS)-associated microcephaly, non-CZS-associated microcephaly, and normotypical children, as well as to characterize their sociodemographic aspects and medical history. A paired cross-sectional study was carried out on 14 children with CZS-associated microcephaly and 24 age-matched controls, in Belo Horizonte, in southeastern Brazil. Children’s oral conditions were assessed: dental caries experience (dmft/DMFT indices); developmental defects of enamel (DDE) index; dental anomalies; mucosal changes; lip sealing, and malocclusion (overjet, overbite, and/or posterior crossbite alterations). The quality of oral hygiene was analyzed by the simplified oral hygiene index. The children’s mothers also answered a questionnaire about sociodemographic and medical history data. The variables were analyzed descriptively. Female participants were more prevalent (60.5%), and the mean age of the participants was 4.9 years (±1.4) (range: 2–8 years) and 92.1% of their exhibited some oral condition. All participants with CZS-associated microcephaly showed absence of lip sealing and had malocclusion (100.0%). When compared to the other groups, children with CZS had a higher percentage of dental anomalies (35.7%), mucosal changes (71.4%), and unsatisfactory oral hygiene (64.3%). In a sample composed mainly of female participants aged less than 5 years, the prevalence of oral conditions and unsatisfactory oral hygiene was higher in the group with CZS-associated microcephaly, followed by the group with non-CZS-associated microcephaly. Normotypical children had the highest percentage of dental caries experience

A multicenter study of biopsied oral and maxillofacial lesions in a Brazilian pediatric population

<div><p>Abstract The aim of this study was to investigate the prevalence of oral and maxillofacial lesions among children from representative regions of Brazil. A retrospective descriptive study was conducted. Biopsy records comprising the period from 2000 to 2015 were obtained from the archives of three Brazilian oral pathology referral centers. A total of 32,506 biopsy specimens were analyzed, and specimens from 1,706 children aged 0–12 years were selected. Gender, age, anatomical location and histopathological diagnosis were evaluated. Descriptive statistics was carried out. Likelihood ratio tests were used to evaluate the association between the categorical variables. The level of significance was set at 0.05. The post-hoc test was used to identify the subgroups that significantly differed from one another, and the Bonferroni correction was applied. A total of 1,706 oral and maxillofacial lesions were diagnosed in pediatric patients, including 51.9% girls. Oral mucocele was the most prevalent reactive/inflammatory lesion (64%). The most commonly affected sites were the lips (34.5%) and mandible (19.9%). A significant association was observed between age and the group of lesions of the oral cavity (p < 0.001), and between age and anatomical location (p < 0.001). Pediatric oral and maxillofacial lesions were frequent and showed wide diversity, with the prevalence of mucocele. Knowledge of oral lesions is important for pediatric dentists worldwide, since it provides accurate data for the diagnosis and oral health of children.</p></div