Da biópsia para o microscópio: processamento tecidual em odontologia

Objetivo: O objetivo desta revisão de literatura é descrever as etapas fundamentais do processamento tecidual para microscopia óptica com coloração de hematoxilina e eosina (HE) de interesse na odontologia. Revisão de Literatura: O processamento tecidual para coloração com HE é constituída basicamente por 7 etapas sequenciais. Imediatamente após a biópsia, o espécime é fixado em formol a fim de interromper a autólise tecidual. Em seguida, na etapa de clivagem, a peça sofre redução de tamanho para facilitar a penetração do agente fixador. Caso a amostra seja dente ou tecido ósseo, ela passa por um processo de descalcificação prévio à clivagem. Nas etapas de processamento e inclusão ocorre remoção de líquidos do interior das células para que em seu lugar entre parafina, e o tecido é incluido em um molde para formar um bloco rígido de parafina, o qual será cortado na fase de microtomia. Finas secções teciduais são então aderidas a uma lâmina, coloridas e seladas. Conclusão: Um ótimo resultado na obtenção de lâminas histológicas depende da execução correta de todas as etapas do processamento tecidual, sendo também influenciado pelos cuidados do cirurgião-dentista com a amostra a ser enviada ao laboratório.

Aim: The aim of this literature review is to describe the fundamental steps of tissue processing for optical microscopy with hematoxylin and eosin (HE) staining of interest in dentistry. Literature Review: Tissue processing for HE staining basically consists of 7 sequential steps. Immediately after the biopsy, the specimen is fixed in formaldehyde to stop tissue autolysis. Then, in the cleavage stage, it undergoes size reduction to facilitate the penetration of the fixing agent. If the sample is a tooth or bone tissue, it goes through a decalcification process prior to cleavage. In the processing and inclusion stages, liquids are removed from the interior of the cells so that paraffin enters in its place, and the tissue is included in a mold to form a rigid block of paraffin, which will be cut in the microtomy phase. Thin tissue sections are then adhered to a slide, colored and sealed. Conclusion: An excellent result in obtaining histological slides depends on the correct execution of all stages of the tissue processing, and is also influenced by the dentist's care with the sample to be sent to the laboratory.

O papel da infecção e inflamação na etiopatogênese da osteonecrose dos maxilares induzida por medicamentos / The role of infection and inflammation in the etiopathogenesis of medication-related osteonecrosis of the jaw

Objetivo: O objetivo desta revisão de literatura é evidenciar o papel da infecção e inflamação na etiopatogenia da osteonecrose dos maxilares induzida por medicamentos (MRONJ). Revisão da literatura: A MRONJ é uma condição rara e grave que impacta negativamente a vida dos pacientes afetados. Sua etiopatogenia é multifatorial e ainda não foi totalmente compreendida. Uma das hipóteses propostas para explicá-la sugere que, além da inibição do turnover ósseo pelos medicamentos antirreabsortivos, a infecção associada à exodontia e a inflamação local desempenham papel decisivo no desencadeamento da condição. O entendimento da etiopatogenia da MRONJ permite ao cirurgião-dentista a identificação dos pacientes com risco maior para a doença, assim como o auxilia no monitoramento e escolha do manejo mais adequado. No campo da pesquisa, ele pode aprimorar estudos pré-clínicos e aprofundar a investigação de biomarcadores para diagnóstico precoce de MRONJ. Considerações finais: Conhecer a contribuição da infecção e inflamação na etiopatogênese da MRONJ é fundamental para orientar a pesquisa e a adoção de estratégias preventivas para os pacientes em risco, e de manejo e monitoramento adequado para aqueles já acometidos. (AU)

Aim: The aim of this literature review is to highlight the role of infection and inflammation in the etiopathogenesis of drug-induced osteonecrosis of the jaw (MRONJ). Literature review: MRONJ is a rare and serious condition that negatively impacts the lives of affected patients. Its etiopathogenesis is multifactorial and has not yet been fully understood. One of the hypotheses proposed to explain it suggests that, in addition to the inhibition of bone turnover by antiresorptive drugs, the infection associated with tooth extraction and local inflammation play a decisive role in triggering the condition. Understanding the etiopathogenesis of MRONJ allows the dentist to identify patients at higher risk for the disease, as well as assisting in monitoring and choosing the most appropriate management. In research, it can improve preclinical studies and deepen the investigation of biomarkers for early diagnosis of MRONJ. Conclusion: Knowing the contribution of infection and inflammation in the etiopathogenesis of MRONJ is essential to guide research and the adoption of preventive strategies for patients at risk, and adequate management and monitoring for those already affected.(AU)

Sensitivity and specificity of salivary pipecolic acid in head and neck squamous cell carcinoma

Aim: The aim of the present preliminary case-control study was to test the sensitivity and specificity of salivary pipecolic acid in predicting head and neck squamous cell carcinoma (HNSCC). Methods: High-performance liquid chromatography was used for the analysis of non-stimulated saliva samples from 40 individuals: 20 in the case group (recently diagnosed with untreated HNSCC) and 20 in the control group (individuals without cancer). Both groups included patients taking daily oral hypoglycemic drugs (comorbidity). The case and control groups were matched at a proportion of 1:1 for sex and comorbidity. Results: Mean salivary levels of pipecolic acid were 169.38 ng/ mL in the case group and 114.66 ng/mL in the control group (p<0.001). Individuals who took oral hypoglycemic drugs had higher levels of pipecolic acid in both the case and control groups (p<0.001). The receiver operating characteristic curve analysis revealed 90% sensitivity and 65% specificity for head and neck cancer, with an area under the curve of 0.838 between the case and control groups. Conclusions: Pipecolic acid had high sensitivity for the diagnosis of HNSCC but low specificity in the sample analyzed. Our findings suggest that salivary pipecolic acid levels are associated with glucose homeostasis. Studies with larger samples are required to evaluate the specificity of this metabolite

Tissue engineering perspectives in dentistry: review of the literature / Perspectivas da engenharia tecidual na Odontologia: revisão de literatura

ABSTRACT Tooth losses due to pathological processes continue to be a reality in daily clinical dentistry, inducing functional and psychological complications in patients. In view of this, a new option for the management of this problem - tissue engineering - has been studied in Dentistry. This field, considered multidisciplinary, uses three key elements for tissue regeneration: scaffolds (extracellular matrices) - natural or synthetic; cells, and growth factors. In this sense, combination of these three elements may induce regeneration of the dental pulp, bone and periodontal tissue, among others. Therefore, the aim of this study was to conduct a literature review, describing the main elements of tissue engineering and their applicability in Dentistry, as a means of updating dental surgeons about this subject.

RESUMO As perdas dentárias, devido aos processos patológicos, ainda são uma realidade na clínica odontológica diária, induzindo complicações funcionais e psicológicas ao paciente. Diante disso, uma nova opção para o manejo desse problema vem sendo estudada na Odontologia, a engenharia tecidual. Essa área, considerada multidisciplinar, utiliza três elementos chaves para a regeneração dos tecidos: os scaffolds (matriz extracelular) naturais ou sintéticos, as células e os fatores de crescimento. Nesse sentido, a combinação desses três elementos pode induzir a regeneração da polpa dentária, tecido ósseo e periodontal, entre outros. Portanto, o objetivo deste estudo é realizar uma revisão da literatura, descrevendo e atualizando os cirurgiões-dentistas sobre os principais elementos da engenharia tecidual e sua aplicabilidade na Odontologia.

Reação liquenoide oral ao amálgama: uma lesão ainda vista / Oral lichenoid reaction to amalgam: a lesion still seen

O amálgama dental ainda é amplamente utilizado na prática odontológica, apesar do acordo assinado na Convenção de Minamata, na qual 140 países comprometeram-se a reduzir o uso do mercúrio. O uso desse material restaurador pode desencadear reações liquenoides orais (RLO) cujas lesões apresentam semelhanças clínicas e histológicas com líquen plano oral (LPO), dificultando o diagnóstico. Aqui relatamos o caso de uma paciente do sexo feminino, de 72 anos, que foi encaminhada com uma lesão na mucosa bucal esquerda, com 10 meses de evolução e queixa de dor. A lesão era adjacente ao segundo molar inferior esquerdo que tinha uma restauração de amálgama. A paciente não apresentava doença sistêmica ou hábitos deletérios e não estava usando drogas continuamente. O diagnóstico clínico presuntivo foi RLO versus LPO. Sessenta dias após a substituição da restauração do amálgama, observou-se a regressão completa da lesão e o diagnóstico final de RLO foi realizado. A avaliação clínica associada aos resultados obtidos após a substituição do material suspeito pode ser suficiente para estabelecer o diagnóstico, embora em alguns casos seja necessária a avaliação histopatológica.

Dental amalgam is still widely used in dental practice, despite the agreement signed at the Minamata Convention, in which 140 countries have committed to reducing the use of mercury. The use of this restorative material may trigger oral lichenoid reactions (OLR) whose lesions show clinical and histological similarities with oral lichen planus (OLP), making diagnosis difficult. Here we report the case of a female patient, 72-year-old, who was referred with a lesion in the left buccal mucosa, with 10 months of evolution and complaint of pain. The lesion was adjacent to the second lower left molar which had an amalgam restoration. The patient had no systemic disease or deleterious habits and was not using drugs continuously. The presumptive clinical diagnosis were OLR versus OLP. Sixty days after the replacement of amalgam restoration the complete regression of the lesion was observed and the final diagnosis of OLR was done. Clinical assessment associated with the results obtained after the replacement of suspect material may be sufficient to establish the diagnosis, although in some cases it may be necessary histopathological evaluation.

Oral and oropharyngeal cancer: epidemiology and survival analysis / Câncer de boca e orofaringe: epidemiologia e análise da sobrevida

ABSTRACT Objective To evaluate the epidemiological profile and survival rate of oral and oropharyngeal cancer patients seen at a university hospital. Methods A cross-sectional study was carried out by means of the pathological reports of patients with oral and oropharyngeal cancer, seen at a university hospital of the Southern Region, between January 2004 and December 2014. Information was collected on patients and tumors. The mortality rate was gathered from the patient death registry in the Mortality Information System. Data were analyzed using the Kaplan-Meier survival curve and the log-rank test to compare variables. Results The 5- and 10-year survival rates were 42% and 38%, respectively. The anatomical location had a significant association with survival rate (p=0.001), with the rates were better in the lips (p=0.04), and worse in the oropharynx (p=0.03). There were no statistically significant differences between survival rates according to age, sex, ethnicity, schooling level and histologic grade. Conclusion The survival rates of oral and oropharyngeal cancer were and associated with the anatomical site of the tumor.

RESUMO Objetivo Avaliar o perfil epidemiológico e a taxa de sobrevida do câncer de boca e orofaringe de pacientes atendidos em um hospital universitário. Métodos Foi realizado um estudo transversal por meio dos laudos anatomopatológicos dos pacientes com câncer de boca e orofaringe atendidos em um hospital universitário, na Região Sul, entre janeiro de 2004 a dezembro de 2014. A partir destes laudos, foram coletadas informações sobre o paciente e o tumor. A taxa de mortalidade foi obtida do registro de óbitos dos pacientes no Sistema de Informações sobre Mortalidade. Os dados foram analisados utilizando a curva de sobrevida pelo método de Kaplan-Meier e o teste de log-rank para a comparação das variáveis. Resultados As taxas de sobrevida em 5 e 10 anos foram 42% e 38%, respectivamente. A localização anatômica apresentou associação significativa com a taxa de sobrevida (p=0,001), sendo que, em lábio, os índices foram melhores (p=0,04) e, em orofaringe, piores (p=0,03). Não houve diferenças estatisticamente significantes entre as taxas de sobrevida de acordo com idade, sexo, etnia, nível educacional e grau histológico. Conclusão As taxas de sobrevida do câncer de boca e orofaringe foram baixas e associadas à localização anatômica do tumor.

Antifungal activity of synthetic antiseptics and natural compounds against Candida dubliniensis before and after in vitro fluconazole exposure

ABSTRACT INTRODUCTION: This study evaluated the susceptibilities of oral candidiasis-derived Candida albicans, fluconazole-resistant (FR) Candida dubliniensis, and fluconazole-susceptible (FS) C. dubliniensis to synthetic antiseptics [chlorhexidine gluconate (CHX), cetylpyridinium chloride (CPC), and triclosan (TRC)] and natural compounds (carvacrol, eugenol and thymol). METHODS: Susceptibility tests were performed based on the M27-A3 reference method. The fluconazole-resistant C. dubliniensis strains were obtained after prolonged in vitro exposure to increasing fluconazole concentrations. The geometric mean values for minimum inhibitory concentrations and minimum fungicidal concentrations were compared among the groups. RESULTS: Fluconazole-susceptible C. dubliniensis was more sensitive to CPC and TRC than FR C. dubliniensis and C. albicans were. However, eugenol and thymol were more active against FR C. dubliniensis. The fungicidal activities of CHX and TRC were similar for the three groups, and FR C. dubliniensis and C. albicans had similar sensitivities to CPC. CONCLUSIONS: The resistance of C. dubliniensis to fluconazole affects its sensitivity the synthetic antiseptics and natural compounds that were tested.

Surgical treatment of osteonecrosis associated with bisphosphonates: a case report / Tratamento cirúrgico da osteonecrose associada a bisfosfonatos: relato de caso

Os bisfosfonatos (BFs) são rotineiramente usados no manejo de patologias ósseas e neoplasias malignas metastáticas, porém há um efeito adverso de seu uso crônico, denominado osteonecrose da mandíbula associada ao uso de bisfosfonatos (OMAB). O tratamento para OMAB é desafiador e complexo, pois ainda não há protocolos definitivos de tratamento e os inúmeros tratamentos descritos na literatura possuem índices variáveis de sucesso. Neste sentido, este estudo objetiva enfatizar a responsabilidade do cirurgião-dentista no conhecimento da OMAB e relatar um caso clínico em que o tratamento cirúrgico foi a melhor opção terapêutica. Paciente do sexo masculino, 69 anos de idade, procurou atendimento odontológico queixando-se de exposição óssea. Na anamnese, relatou fazer uso de BFs devido ao histórico de câncer. O exame intraoral revelou exposição óssea em região de molar inferior direito estendendo-se para região de trigonoretromolar pela face lingual. Fez-se o tratamento conservador com antibioticoterapia e bochechos com clorexidina a 0,12 %, porém não se obteve sucesso. Assim, optou-se pela remoção cirúrgica da área de necrose óssea e do dente envolvido. O pós-operatório ocorreu dentro dos padrões de normalidade. O conhecimento do cirurgiãodentista sobre esta patologia é essencial para prevenir, diagnosticar e tratar esta doença da forma mais adequada. Embora o tratamento de OMAB permaneça desafiador e complexo, o manejo cirúrgico é uma opção terapêutica para lesões em estágios clínicos iniciais e resistentes ao tratamento conservador, proporcionando um melhor prognóstico e qualidade de vida ao paciente. (AU)

Bisphosphonates (BP) are routinely used in the management of metastatic bone diseases and malignancies neoplasms, but there is an adverse effect of their chronic use called bisphosphonaterelated osteonecrosis of the jaw (BRONJ). Treatment for BRONJ is challenging and complex, as there is still no definitive treatment protocols and the various treatments described in the literature have success variables indexes. In this sense, this study aims to emphasize the responsibility of dentist about the knowledge of BRONJ and report a clinical case that the surgical therapy was the best treatment option. Male patient, sixty-nine years old, asked for dental care complaining about bone exposure. On the anamneses, he reported the use of BP due to cancer history. The intra oral examination revealed exposed bone in the lower right molar region extending to retromolar trigon region on lingual side. There was conservative treatment with antibiotic therapy and mouth rinses of chlorhexidine 0.12 %, but not obtaining success. Therefore, we opted for the surgical removal of necrotic bone area and the tooth involved. The postoperative was within normal standard. The knowledge of dentist about this pathology is essential to prevent, diagnose and treat this disease the most appropriate way. Although the treatment of BRONJ remains challenging and complex, surgical therapy is a treatment option for lesions in early clinical stages and resistant to conservative treatment, providing a better prognosis and quality of life for the patient. (AU)

Osteonecrose dos maxilares associada ao uso de bifosfonatos: uma revisão de literatura / Osteonecrosis of the jaws associated with bisphosphonates: a literature review

Os Bifosfonatos (BFS) são fármacos antirreabsortivos frequentemente utilizados no tratamento de desordens ósseas e de neoplasias malignas metastáticas. Seu mecanismo de ação consiste na inibição da atividade osteoclástica e angiogênica do tecido ósseo. No entanto, o uso crônico desses medicamentos pode desenvolver a osteonecrose dos maxilares associada aos bifosfonatos (OMAB), principalmente em pacientes submetidos a traumas prévios. O presente trabalho objetiva revisar abordagens terapêuticas para esses pacientes, focando na prevenção e tratamento dessas patologias. A literatura tem apresentado propostas variadas para o tratamento da OMAB, muitas vezes controverso. O tratamento dessas patologias tem se tornado desafiador, uma vez que os protocolos nem sempre são eficientes para controlar tal condição. Assim, previamente à terapêutica com BFS, os profissionais de saúde devem realizar todos os procedimentos necessários para adequação do meio bucal dos pacientes, bem como manter um rigoroso acompanhamento da sua condição bucal. Diante disso, é de fundamental importância a ação multidisciplinar entre médicos e cirurgiões-dentistas no manejo desses pacientes

Bisphosphonates (BPS) are antiresorptive agents routinely used in the management of bone diseases and metastatic malignancies neoplasm. Its mechanism of action inhibits the osteoclastic and angiogenic activity of bone tissue. However, its chronic use can raise Bisphosphonate-Related Osteonecrosis of the Jaws (BRONJ), mainly in patients submitted to previous trauma. This study aims to review therapeutic approaches of these patients, focusing on prevention and treatment of these pathologies. The literature has presented various proposals to treat the BRONJ, but sometimes it's controversial. The treatment of these pathologies has been challenging, once the protocols are not always effective to control this condition. Thus, previously of BFS therapeutic, the health professional should realize all the needed procedures to adequate the oral environment of these patients, as well as to maintain a rigorous attendance of your oral condition. It's essential the multidisciplinary approach between physician and dental surgeon to manage these patients

Tissue characterization following revascularization of immature dog teeth using different disinfection pastes

Abstract Revascularization of immature teeth with necrotic pulps traditionally involves the use of triple antibiotic paste, which may sometimes lead to undesirable complications. The objective of this study was to assess tissue repair in immature dog teeth with apical periodontitis subjected to revascularization, comparing two different pastes used for root canal disinfection. Apical periodontitis was induced in 30 dog premolars. Teeth were randomly divided into three experimental groups: root canals filled with triple antibiotic paste (n = 10); root canals filled with 1% propolis paste (n = 10); and no medication (n = 10). An additional group (n = 10, no intervention) was used as control. After 7 months, the jaws were histologically evaluated for the following variables: newly formed mineralized tissue (present/absent); vital tissue in the canal space (absent/periodontal ligament-like/pulp-like); apical extension of root (present/absent); and severity of inflammatory process (absent/mild/moderate/severe). There were no statistically significant differences among the experimental groups in new mineralized tissue formation and apical root development. The formation of vital tissue in the canal space, in turn, was statistically different between the triple paste and propolis groups: vital tissues were present in all revascularized teeth disinfected with propolis paste (100%), compared to 71% of those disinfected with the triple paste. Severity of inflammatory process was different between the triple paste and no medication groups. The new tissues formed onto canal walls and in the root canal space showed characteristics of cementum and periodontal ligament, respectively. Propolis may have some advantages over the triple paste for the revascularization of immature teeth.

Dental flossing as a diagnostic method for proximal gingivitis: a validation study

ABSTRACT This study evaluated the clinical diagnosis of proximal gingivitis by comparing two methods: dental flossing and the gingival bleeding index (GBI). One hundred subjects (aged at least 18 years, with 15% of positive proximal sites for GBI, without proximal attachment loss) were randomized into five evaluation protocols. Each protocol consisted of two assessments with a 10-minute interval between them: first GBI/second floss, first floss/second GBI, first GBI/second GBI, first tooth floss/second floss, and first gum floss-second floss. The dental floss was slid against the tooth surface (TF) and the gingival tissue (GF). The evaluated proximal sites should present teeth with established point of contact and probing depth ≤ 3mm. One trained and calibrated examiner performed all the assessments. The mean percentages of agreement and disagreement were calculated for the sites with gingival bleeding in both evaluation methods (GBI and flossing). The primary outcome was the percentage of disagreement between the assessments in the different protocols. The data were analyzed by one-way ANOVA, McNemar, chi-square and Tukey's post hoc tests, with a 5% significance level. When gingivitis was absent in the first assessment (negative GBI), bleeding was detected in the second assessment by TF and GF in 41.7% (p < 0.001) and 50.7% (p < 0.001) of the sites, respectively. In the absence of gingivitis in the second assessment (negative GBI), TF and GF detected bleeding in the first assessment in 38.9% (p = 0.004) and 58.3% (p < 0.001) of the sites, respectively. TF and GF appears to be a better diagnostic indicator of proximal gingivitis than GBI.

Relação entre sobrevida dos pacientes com carcinoma espinocelular de cavidade bucal e estadiamento patológico, operados no Hospital Universitário da Universidade Federal de Santa Maria, RS / Relationship between survival of patients with squamous cell carcinoma of the oral cavity and pathological staging, operated at the University Hospital of the Federal University of Santa Maria, RS

Introdução: A neoplasia bucal é uma doença de alta incidência no mundo que vem sendo considerada um problema de saúde pública. O INCA (Instituto Nacional do Câncer) estimava para o ano de 2012 que a incidência de câncer de cavidade bucal, no Brasil, seria de 14.170 novos casos, correspondendo a 7ª neoplasia maligna mais incidente. Tendo em vista o impacto que o câncer de cavidade bucal representa para a sociedade, o presente trabalho visa descrever a sobrevida dos pacientes operados em razão dessa enfermidade, e objetiva comparar essa sobrevida com os estádios de acometimento da neoplasia. Métodos: Estudo descritivo retrospectivo dos pacientes operados por carcinoma espinocelular (CEC) de boca no período entre 1996 e 2006. Resultados: 255 pacientes foram diagnosticados nesse período e 67 desses constituem a amostra utilizada, preenchendo os critérios de inclusão (excisão tumoral completa e esvaziamento cervical). Foram analisadas as variáveis idade, sexo, estadiamento patológico e sobrevida. Ao final da análise dos dados verificou-se que houve uma maior concentração de casos de CEC de boca em indivíduos entre 40 e 60 anos de idade e predominância do sexo masculino. A sobrevida em 5 anos foi de 28,4%, enquanto que 29,85% da amostra faleceu e 41,79% perdeu o acompanhamento antes dos 5 anos pós- cirúrgicos (entre 0 e 4 anos). Conclusão: A neoplasia maligna bucal continua sendo diagnosticada e tratada em estádios avançados.

Background: Oral neoplasia is a disease of high incidence in the world that has been considered a public health problem. The INCA (Brazilian National Cancer Institute) estimated for the year 2012 that the incidence of oral cavity cancer, in Brazil, would be 14,170 new cases, corresponding to the 7th most common malignant neoplasia. Considering the impact that oral cavity cancer represents to society, this work looks to describe the survival of patients operated on account of this illness, and also aims to compare this survival with the stages of neoplastic involvement. Methods: a retrospective descriptive study was carried out on the patients operated for squamous cell carcinoma (SCC) of the mouth in the period between 1996 and 2006. Results: 255 patients were diagnosed and 67 of these constitute the sample used, fulfilling the inclusion criteria that are based on patients operated for complete tumor excision and undergoing cervical lymphadenectomy. The variables of age, sex, pathological staging and survival were analyzed. At the end of the data analysis it was verified there was a greater concentration of cases of SCC of the mouth in individuals between 40 and 60 years of age and predominantly of the male sex. Survival in 5 years was 28.4%, while 29.85% of the sample died and 41.79% lost contact before 5 years after surgery (between 0 and 4 years). Conclusion: The oral malignancy continues to be diagnosed and treated in advanced stages.

Prevalência e fatores associados às manifestações bucais em pacientes HIV positivos atendidos em cidade sul-brasileira / Prevalence of oral lesions in persons with HIV and associated factors in a southern Brazilian city

O objetivo deste estudo foi avaliar a prevalência de lesões bucais entre pacientes HIV positivos e identificar fatores associados a tais lesões. Foi realizado estudo transversal que coletou dados mediante entrevista, exame clínico e consulta aos prontuários médicos de pacientes adultos atendidos no Serviço de HIV-AIDS do Hospital Universitário da Universidade Federal do Rio Grande, Rio Grande do Sul, Brasil, sendo considerados fatores sócio-demográficos, imunológicos e terapêuticos. Foi utilizada a regressão de Poisson num modelo hierárquico de análise. Entre abril de 2006 a janeiro de 2007 foram observados 300 pacientes, sendo 51 por cento do sexo masculino e média de idade de 40 anos; 39 por cento apresentaram lesões bucais, sendo a candidíase a mais freqüente (59,1 por cento), seguida de leucoplasia pilosa (19,5 por cento). As mulheres apresentaram um risco menor, com observância de uma associação inversa com o CD4. Houve um risco maior entre aqueles pacientes com menor escolaridade, menor renda, tabagistas, dependentes do álcool, com maior tempo de infecção pelo HIV e carga viral mais elevada. Os dados confirmaram a elevada prevalência das manifestações bucais oportunistas e evidenciaram a sua relação com a situação social, assim como sua relação com determinados hábitos e costumes passíveis de modificação.

The aim of the study was to assess the prevalence of oral lesions in AIDS patients and identify associated factors. A cross-sectional study collected data from interviews, clinical examination, and a review of medical records for adult patients treated at the HIV/AIDS clinic in the University Hospital of the Federal University in Rio Grande, Rio Grande do Sul State, Brazil, focusing on socio-demographic, immune status, and treatment factors. Poisson regression was used in a hierarchical analytical model. From April 2006 to January 2007, 300 patients were observed (51 percent males; mean age 40 years). Of the total, 39 percent presented oral lesions, with candidiasis as the most frequent (59.1 percent), followed by hairy leukoplakia (19.5 percent). Women showed a lower risk of oral lesions, and there was an inverse association with CD4 count. Increased risk was associated with lower schooling, low income, smoking, alcohol addiction, time since HIV seroconversion, and higher viral load. The data confirm the increased prevalence of opportunistic oral lesions and show their relationship to socioeconomic conditions and modifiable habits and customs.

Squamous odontogenic tumor: with recurrence and 12 years of follow-up / Tumor odontogênico escamoso: com recidiva e doze anos de acompanhamento

O tumor odontogênico escamoso é uma neoplasia benigna rara que pode ser única ou múltipla. Os autores apresentam uma revisão das características clínicas, radiográficas e histopatológicas do tumor odontogênico escamoso e relatam um caso de um paciente com recidiva com acompanhamento de doze anos e discutem os critérios de diagnóstico e abordagens terapêuticas.

Squamous odontogenic tumor is a rare benign neoplasm and may affect multiple sites in the mouth. The authors review the clinical, radiographic and histopathological features of Squamous odontogenic tumor and report a case of a patient with recurrent Squamous odontogenic tumor and 12 years of followup and discuss diagnostic criteria and therapeutic approaches.

Câncer de boca: um estudo no Hospital Universitário de Santa Maria / Oral cancer: a Santa Maria University Hospital study

O presente artigo realizou uma análise retrospectiva do perfil epidemiológico de 124 pacientes com câncer de boca atendidos no Hospital Universitário de Santa Maria (HUSM) no período compreendido entre 1994 e 1998. O tipo histológico predominante foi o carcinoma de células escamosas, com 117 (94,35 porcento) casos, sendo a lígua o sítio topográfico mais acometido, com 51 (41,13 porcento) casos. O sexo masculino predominou, com uma relação homens:mulheres de 4,9:1. Considerando os fatores de risco para o desenvolvimento do câncer de boca, verificamos que 95 (76,61 porcento) pacientes eram tabagistas, etilismo foi relatado por 59 (47,58 porcento) pacientes e 48 (38,70 porcento) usaram prótesse dentária. Em relação à sintomatologia, a presença de lesão 97 (78,22 porcento) e dor 68 (54,83 porcento) foram os sintomas mais freqüentes. A combinação cirurgia e radioterapia foi o tratamento mais empregado, em 57 (45,98 porcento) casos. Concluímos que os dados deste estudo não diferem dos da literatura mundial.