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Studies have reported changes in the epidemiological profile of patients with oral cancer in recent decades, especially regarding gender and age. This study aimed to evaluate a historical series of oral malignant lesions prevalence over six decades and define characteristics associated with the occurrence, mainly, of oral squamous cell carcinoma (OSCC). A retrospective review of histopathological records from 1953 to 2019 was conducted in three oral pathology laboratories in South Brazil about age, sex, anatomical site, clinical aspect, and histopathological diagnosis. Descriptive and analytical analyses were performed comparing the histopathological diagnoses with other variables. Multivariable logistic regression was applied to determine the associated predictors of OSCC. Of the 53,065 records available in the institutions, 986 were oral malignant tumors (including all malignant neoplasms), representing 1.86% of all diagnoses. The occurrence of OSCC in the 1960's was 80.0%, decreasing over time reaching the lowest percentage of cases in the 1990's (75.8%) and significantly increasing to 88.7% in the 2010s. Females had a lower chance than males of having OSCC independently of the decade (odds ratio=0.30, p<0.001). This was the same for older individuals compared to those younger than 40 years. No interactions between sex, age, and decade were observed. The number of diagnoses of oral malignant lesions increased over time, and the occurrence of OSCC varied. Older individuals and males had higher chances of having OSCC independently of the decade. Therefore, in this study sample, no changes were observed in the epidemiological profile over the years concerning these predictors.

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Abstract Studies have reported changes in the epidemiological profile of patients with oral cancer in recent decades, especially regarding gender and age. This study aimed to evaluate a historical series of oral malignant lesions prevalence over six decades and define characteristics associated with the occurrence, mainly, of oral squamous cell carcinoma (OSCC). A retrospective review of histopathological records from 1953 to 2019 was conducted in three oral pathology laboratories in South Brazil about age, sex, anatomical site, clinical aspect, and histopathological diagnosis. Descriptive and analytical analyses were performed comparing the histopathological diagnoses with other variables. Multivariable logistic regression was applied to determine the associated predictors of OSCC. Of the 53,065 records available in the institutions, 986 were oral malignant tumors (including all malignant neoplasms), representing 1.86% of all diagnoses. The occurrence of OSCC in the 1960's was 80.0%, decreasing over time reaching the lowest percentage of cases in the 1990's (75.8%) and significantly increasing to 88.7% in the 2010s. Females had a lower chance than males of having OSCC independently of the decade (odds ratio=0.30, p<0.001). This was the same for older individuals compared to those younger than 40 years. No interactions between sex, age, and decade were observed. The number of diagnoses of oral malignant lesions increased over time, and the occurrence of OSCC varied. Older individuals and males had higher chances of having OSCC independently of the decade. Therefore, in this study sample, no changes were observed in the epidemiological profile over the years concerning these predictors.

Resumo Alguns estudos relataram mudanças no perfil epidemiológico dos pacientes com câncer bucal nas últimas décadas, principalmente quanto ao gênero e a idade. Este estudo teve como objetivo avaliar, em uma série histórica, a prevalência de todas as lesões malignas bucais ao longo de seis décadas e definir características associadas na ocorrência, principalmente, de carcinoma espinocelular (CEC). Um levantamento retrospectivo dos registros histopatológicos de 1953 a 2019 foi realizado em três laboratórios de Patologia Bucal no Sul do Brasil em relação à idade, gênero, sítio anatômico, aspecto clínico e diagnóstico histopatológico. Análises descritivas e analíticas foram realizadas comparando-se os diagnósticos histopatológicos com as outras variáveis. A regressão logística multivariada foi aplicada para determinar os possíveis preditores associados ao CEC. Dos 53.065 prontuários disponíveis nas instituições, 986 eram tumores malignos bucais (incluindo todas as neoplasias malignas), representando 1,86% de todos os diagnósticos. A ocorrência de CEC na década de 1960 foi de 80,0%, diminuindo ao longo do tempo, atingindo o menor percentual de casos na década de 1990 (75,8%) e aumentando significativamente para 88,7% na década de 2010. As mulheres tiveram menor risco de desenvolver CEC do que os homens, independentemente da década (OR=0,30, p<0,001). Este foi o mesmo para indivíduos com idade mais avançada em comparação com aqueles com menos de 40 anos de idade. Não foram observadas interações entre gênero, idade e década. O número de diagnósticos de lesões malignas bucais aumentou ao longo das décadas e a ocorrência de CEC variou. Indivíduos com mais de 40 anos e do sexo masculino tiveram maiores chances de ter CEC, independentemente da década analisada. Portanto, nessa amostra estudada, não foram observadas mudanças no perfil epidemiológico ao longo dos anos com relação a esses preditores.

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OBJECTIVE: We aimed to evaluate the effects of the deoxycholic acid (DCA) in the submental and subplantar regions of rats, and to histologically analyze the changes caused in the submandibular glands, soft tissues of the paw, and inguinal adipose tissue. MATERIAL AND METHODS: Sixty male Wistar rats were divided into DCA and control (CG) groups. DCA was injected in the submental, inguinal, and subplantar regions, and saline was injected in the CG. The animals were euthanized after 24 h and at 7 and 21 days. RESULTS: The DCA group showed edema in the submental region in 24 h and in the paw in all experimental times. In the paw there were also erythema and ulceration in 7 days, and alopecia after 21 days. At 21 days, a few animals also showed erythema and ulceration in paw; however, there was no significant difference from CG. Histological analysis of the paw showed an intense inflammatory process, with a predominance of neutrophils, lymphocytes, and plasma cells in 24 h and 7 days. In the adipose tissue, we observed loss of architecture and inflammatory infiltrate, followed with a lower number of adipose cells, and at 21 days, fibroplasia. In the submandibular glands we observed inflammatory infiltration, loss of tissue architecture, and fibrosis. CONCLUSIONS: DCA produces a significant inflammatory process in the structures. It can cause skin ulcerations and, in salivary glands, it causes loss of tissue architecture and fibrosis. CLINICAL RELEVANCE: There has been growing increase in the use of DCA for aesthetic purposes by health care providers. Due to the presence of important anatomical structures in the submental region, constant vigilance is required to report new adverse effects.

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AIM: To evaluate the impact of the presence and treatment of periodontal disease (PD) and apical periodontitis (AP) on the aorta and liver of obese and non-obese rats. METHODOLOGY: One hundred and forty Wistar rats were divided into two groups, according to the diet administered: normal diet (-n), without obesity; and cafeteria diet (-c), with induced obesity. These groups were divided into seven subgroups according to the specific experimental protocols: naïve control (NC); AP; AP with treatment (APt); PD; PE with treatment (PDt); AP and PD (APPD); and AP and PD with treatment (APPDt). AP and PD lesions were induced for four weeks. Four weeks after treatments, the animals were euthanatized, and the aorta and liver were dissected for histological evaluation. For the comparison of the thickness of the aorta between groups, the Kruskal-Wallis test was used, followed by the Mann-Whitney test. For the analysis of other variables related to the aorta and liver outcomes, logistic regression was carried out. RESULTS: Both PD and AP were associated with the development of histological alterations in the aortic arch, with no significant difference between obese and non-obese animals (p = .17). The aorta thickness was increased significantly (p < .05) with the combination of PD and AP in obese rats (APPDt-c group) compared with the other groups (NC-n, APt-n, APt-c and AP-c). The logistic regression models revealed that the untreated (OR = 7.78; 95%CI = 2.4-25) and treated (OR = 2.9; 95%CI = 1.0-8.4) groups were significantly more likely to have endothelial alterations compared with the control groups (p = .002). Obesity (OR = 16.5; 95%CI = 3.4-81.3) was the only predictor variable of liver steatosis (p < .001). CONCLUSION: Histological alterations in the aortic arch of obese and non-obese rats were observed in the presence of periodontal disease and apical periodontitis. The combination of PD and AP increased the aorta thickness in obese rats. A reduction of vascular endothelial lesions was observed with the treatments of PD and AP.

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Abstract Introduction: Solitary plasmacytoma is a rare malignant tumor of plasma cells with no evidence of systemic proliferation. There are two known subtypes: extramedullary solitary plasmacytoma and solitary bone plasmacytoma. The etiology is still unknown. Both lesions present a risk of progression to multiple myeloma. A number of approaches have been used for treatment of solitary plasmacytoma. Objective: To carry out a systematic review of the case reports described in the literature, focusing on therapeutic and prognostic aspects. Methods: A search of clinical case reports was performed in the PubMed database using Mesh Terms related to "plasmacytoma" under the following criteria: type of study (case report), articles in English language, conducted in humans, with no publication date limits. Results: Of the 216 articles found, only 21 articles met the pre-established inclusion criteria. Conclusion: The occurrence of solitary bone plasmacytoma in the bones of the face is a rare condition prevalent between the 4th and 6th decades of life, located in the posterior region of the mandible in most cases. Histopathological examination and systemic investigation are mandatory for confirmation of diagnosis.

Resumo: Introdução: O plasmocitoma solitário é um tumor maligno raro de células plasmáticas sem evidência de proliferação sistêmica e engloba dois subtipos: plasmocitoma solitário extramedular e plasmocitoma solitário ósseo. A etiologia ainda é desconhecida. Ambas as lesões apresentam risco de progressão para mieloma múltiplo. Uma série de abordagens tem sido usada para seu tratamento. Objetivo: Realizar uma revisão sistemática da literatura com enfoque nos aspectos terapêuticos e prognósticos. Método: Realizou-se uma busca de relatos de caso clínico na base de dados PubMed com termos de busca relacionados com "plasmocitoma" sob os seguintes critérios: tipo de estudo (relato de caso), artigos na língua inglesa, estudos realizados apenas em humanos, sem limites de data de publicação. Resultados: Dos 216 artigos encontrados, apenas 21 preencheram os critérios de inclusão pré-estabelecidos. Conclusão: A ocorrência de plasmocitoma solitário ósseo nos ossos da face é uma condição rara prevalente entre a 4a e a 6a décadas de vida, localizada na região posterior de mandíbula na maioria dos casos. O exame histopatológico e a investigação sistêmica são mandatórios para confirmação do diagnóstico.

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Early detection of oral squamous cell carcinoma (OSCC) is a challenge for oral surgeons, as clinical features are not always classical. Cytopathological assays can help identify alterations at the cellular level. This article reports a case of OSCC in a young male adult without exposure to classical risk factors. The histopathological examination showed a micro invasive carcinoma invading the connective tissue. Cytopathological results showed a higher percentage of cells in deeper epithelial layers; the cytomorphometric examination revealed a nuclear/cytoplasmic ratio of 0.14; the mean number of Nucleolar Organiser Regions which have a high affinity for silver (AgNOR) per nucleus was 2.86, and the mean percentage of nuclei with >2 AgNOR was 58%. The micronucleus test found 3 micronucleated cells and several metanuclear aberrations. These findings support the hypothesis that cytological examination is an important tool to identify early changes in oral smears and thus help in the early clinical detection of suspicious malignant oral lesions that should be more rigorously followed.

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INTRODUCTION: Solitary plasmacytoma is a rare malignant tumor of plasma cells with no evidence of systemic proliferation. There are two known subtypes: extramedullary solitary plasmacytoma and solitary bone plasmacytoma. The etiology is still unknown. Both lesions present a risk of progression to multiple myeloma. A number of approaches have been used for treatment of solitary plasmacytoma. OBJECTIVE: To carry out a systematic review of the case reports described in the literature, focusing on therapeutic and prognostic aspects. METHODS: A search of clinical case reports was performed in the PubMed database using Mesh Terms related to "plasmacytoma" under the following criteria: type of study (case report), articles in English language, conducted in humans, with no publication date limits. RESULTS: Of the 216 articles found, only 21 articles met the pre-established inclusion criteria. CONCLUSION: The occurrence of solitary bone plasmacytoma in the bones of the face is a rare condition prevalent between the 4th and 6th decades of life, located in the posterior region of the mandible in most cases. Histopathological examination and systemic investigation are mandatory for confirmation of diagnosis.

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Bisphosphonates (BPs) are being increasingly used for the treatment of metabolic and oncological pathologies involving the skeletal system. Because of the severity of the BP associated osteonecrosis of the jaws, the difficulties of treatment, and patient discomfort, additional support methods for their management are needed. Laser therapy has an easy handling, photobiostimulator effect on tissues healing, so it can be considered a preferred therapy. The aim of this study was to evaluate the influence of low-level laser therapy in the 685- and 830-nm wavelength in the healing process of the bone and soft tissues in rats under BP therapy [zoledronic acid (ZA)] and dexamethasone concomitantly that underwent a surgery for the extraction of upper molars. There were statistically significant differences in the clinical evaluation of the wound and the weight of the animals. Regarding the histological evaluation, it was possible to observe the different maturations of the healing stage between groups. The effect of drug therapy with ZA and dexamethasone in the bone tissue repair process induces osteonecrosis of the jaw in rats and slows down the healing process. In the laser groups, at the stipulated dosimetry, a positive influence on the bone and soft tissue repair process was observed.

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A prevalência das patologias periapicais é um assunto de discordância entre investigadores. A variação dos achados pode ser atribuída à falta de padronização do material coletado, a diferentes técnicas de processamento do espécime e aos critérios de diagnóstico histológico utilizados por cada investigador. Este trabalho teve como objetivo re-avaliar casos de abscessos periapicais através de cortes semi-seriados. Foram selecionados casos de diagnóstico histopatológico de abscessos periapicias do Laboratório de Patologia Bucal da FOPUCRS, no período de abril/01 a setembro/2002 (18 meses). Os respectivos blocos de parafina foram localizados no arquivo e três novos cortes semi-seriados (com um espaçamento de 20mm entre cada corte) foram realizados. Os cortes foram corados com hematoxilina e eosina e avaliados por dois examinadores. Dos 23 casos de abscessos diagnosticados por ambos avaliadores, 18 (78,3 porcento) mantiveram o diagnóstico inalterado, enquanto que, cinco (21,7 porcento) alteraram o diagnóstico para cisto. Com base na metodologia empregada nesse experimento, concluímos que a utilização de cortes semi-seriados se faz necessária para o correto diagnóstico das lesões inflamatórias periapicais. Entretanto, a utilização desse recurso não minimizará as diferenças existentes entre os estudos de prevalência das lesões inflamatórias periapicais, uma vez que, ainda existe discrepância de critérios de diagnóstico histopatológicos entre os investigadores

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Algumas terapias medicamentosas podem ser responsáveis pelo surgimento de alterações pigmentares na mucosa bucal. Os agentes antimaláricos estão freqüentemente relacionados a hiperpigmentações e, por exercerem atividade imunossupressora e anti-inflamatória, são utilizados no tratamento de condições mediadas imunologicamente. Os autores apresentam dois casos de pigmentação por agente antimalárico(cloroquina) em mucosa de palato duro, chamando a atenção para a necessidade de familiarização do cirurgião-dentista com essas hiperpigmentações a fim de facitar o diagnóstico diferencial com as diversas alterações que promovem mudanças de coloração na mucosa bucal

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