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OBJECTIVES: To evaluate the effects of photobiomodulation (PBM) in gingival lesions resulting from autoimmune diseases; to compare PBM and topical corticosteroid (CS) treatment; and to assess PBM outcome over time of follow-up. MATERIALS AND METHODS: A comprehensive electronic search was performed in four electronic databases. Treatment effects were measured through visual analog scale of pain (VAS) and clinical evolution of lesion (Thongprasom scale for oral lichen planus (OLP)). Meta-analysis was performed to compare PBM with topical corticosteroid treatment and to evaluate PBM effect over time of follow-up. RESULTS: Seventeen studies were included in this review, of which six were used for the meta-analysis. Meta-analysis results showed no significant differences between PBM and topical CS in pain reduction at baseline (MD = 0.20, 95% CI = - 0.92, 1.32, p = 0.72) and 60-day follow-up (MD = 0.63, 95% CI = - 3.93, 5.19, p = 0.79); however, VAS showed significant pain reduction when compared before and after PBM at 30-day (MD = - 3.52, 95% CI = - 5.40, - 1.64, p = 0.0002) and 60-day (MD = - 5.04, 95% CI = - 5.86, - 4.22, p < 0.00001) follow-up. Thongprasom clinical scale for OLP also showed significant improvement at 30-day follow-up (MD = - 2.50, 95% CI = - 2.92, - 2.08, p < 0.00001) after PBM. CONCLUSION: PBM led to significant reduction of pain and clinical scores of the lesions, not having shown significant differences when compared to topical CS. CLINICAL RELEVANCE: PBM has been used in the treatment of autoimmune gingival lesions, but so far there is little strong evidence to support its use.

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This study aims to evaluate the effects of photobiomodulation (PBM) on human monocytes, assessing the oxidative burst and ultimate fungicidal potential of these cells, as well as the gene expression at the mRNA level of CD68, CD80, CD163, CD204, IL-6, TNF-α and IL-10 in derived macrophages. Primary cultures of human monocytes were irradiated with an InGaAlP (660 nm)/GaAlAs (780 nm) diode laser (parameters: 40 mW, 0.04 cm2, 1 W/cm2; doses: 200, 400 and 600 J/cm2). Cells were submitted to the chemiluminescence assay, and a microbicidal activity assay against Candida albicans was performed. Reactive oxygen species (ROS) and nitric oxide (NO) production were measured, and cell viability was assessed by the exclusion method using 0.2% Trypan blue reagent. Irradiated monocytes were cultured for 72 h towards differentiation into macrophages. Total RNA was extracted, submitted to reverse transcription and real-time PCR. The results were analysed by ANOVA and the Tukey test (α = 0.05). Irradiated monocytes revealed a significant increase in their intracellular and extracellular ROS (P < 0.001). The 660 nm wavelength and 400 J/cm2 dose were the most relevant parameters (P < 0.001). The fungicidal capacity of the monocytes was shown to be greatly increased after PBM (P < 0.001). PBM increased the expression of TNF-α (P = 0.0302) and the production of NO (P < 0.05) and did not impair monocyte viability. PBM induces a pro-inflammatory Th1-driven response in monocytes and macrophages.

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Introduction: Oral squamous cell carcinoma (OSCC) is one of the most frequent cancers whose main causes are preventable because oral cavity is easily accessible for examination. OSCC involves many steps from the diagnosis until treatment which can result in late diagnosis and worst prognosis. Objective: Development and evolution of a Stomatology and Oral Pathology Service at the Federal University of Alfenas addressing early diagnosis and management of oral lesions. Method: Retrospective study developed with the files from 1998 to 2019. Data from all the cases diagnosed as oral malignancies were collected and the demographical, clinical, and microscope diagnosis were included. Results: 270 (84.64%) OSCC were found among 8,952 histopathological diagnoses. The patients age ranged from 24 to 94 years (mean 59.7±13.1 years), and more frequent in the sixth (32.3%) and seventh (26%) decades of life. Men were 2.5 times more affected than women. Most of patients were Caucasian (74.8%), and users of tobacco and alcohol. Over the years, there was an increase in the number of cases diagnosed and expansion of the area covered by the Service. Conclusion: The Dental Clinic (Stomatology) and Oral Pathology Laboratory has been playing an important role for the establishment and improvement of the healthcare system to the local population, mainly in rural áreas

Introdução: O carcinoma de células escamosas (CEC) de boca está entre os cânceres mais frequentes. Suas principais causas são evitáveis, pois a cavidade oral é uma área de fácil acesso para exame. No entanto, desde o estabelecimento do diagnóstico até o tratamento final dos pacientes, o CEC envolve muitas etapas e pode resultar em diagnóstico tardio e, portanto, em pior prognóstico para os pacientes. Objetivo: Apresentar o desenvolvimento e a evolução de um Serviço de Estomatologia e Patologia Oral da Universidade Federal de Alfenas, que tem como foco o diagnóstico precoce e o tratamento de lesões bucais. Método: Estudo retrospectivo com os prontuários de 1998 a 2019. Foram coletados dados de todos os casos diagnosticados como malignidades orais e incluídos os diagnósticos demográficos, clínicos e microscópicos. Resultados: Entre 8.952 diagnósticos histopatológicos realizados, 270 (84,64%) eram CCE. A idade dos pacientes variou de 24 a 94 anos (média 59,7±13,1 anos), sendo mais frequente na sexta (32,3%) e sétima (26%) décadas de vida. Os homens foram 2,5 vezes mais afetados do que as mulheres. A maioria dos pacientes era branca (74,8%) e o uso de tabaco e álcool, frequente. Ao longo dos anos, houve um aumento do número de casos diagnosticados, bem como uma ampliação da área de cobertura do Serviço. Conclusão: O Serviço de Estomatologia e Patologia Oral tem desempenhado um papel importante na implantação e melhoria do sistema de saúde da população local, principalmente nas Regiões interioranas e em áreas rurais

Introducción: El carcinoma de células escamosas (CCE) de boca se encuentra entre los cánceres más frecuentes. Sus principales causas se pueden prevenir ya que la cavidad bucal es un área de fácil acceso para su examen. Sin embargo, desde el establecimiento del diagnóstico hasta el tratamiento final de los pacientes, la CEC implica muchos pasos y puede resultar en un diagnóstico tardío y, por lo tanto, un peor pronóstico para los pacientes. Objetivo: Presentar el desarrollo y evolución de un Servicio de Estomatología y Patología Bucal de la Universidad Federal de Alfenas que se enfoca en el diagnóstico y tratamiento precoz de las lesiones bucales. Método: Estudio retrospectivo con historias clínicas de 1998 a 2019. Se recolectaron datos de todos los casos diagnosticados como neoplasias bucales, incluyendo diagnósticos demográficos, clínicos y microscópicos. Resultados: De los 8.952 diagnósticos histopatológicos realizados, 270 (84,64%) fueron CCE. La edad de los pacientes osciló entre 24 y 94 años (media 59,7±13,1 años), siendo más frecuente en la sexta (32,3%) y séptima (26%) décadas de la vida. Los hombres se vieron 2,5 veces más afectados que las mujeres. La mayoría de los pacientes eran de raza blanca (74,8%) y el consumo de tabaco y alcohol era frecuente. A lo largo de los años, ha habido un aumento en el número de casos diagnosticados, así como una expansión del área de cobertura del Servicio. Conclusión: El Servicio de Estomatología y Patología Bucal ha jugado un papel importante en la implementación y mejora del sistema de salud para la población local, especialmente en las Regiones del interior y áreas rurales

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There is currently no clear understanding on the pathways involved in the process of cell inhibition by photobiomodulation (PBM). The present study evaluated the influence of PBM on the expression of autophagy markers in vitro in an in situ model of oral carcinoma. Oral squamous cell carcinoma (Cal27) and stromal fibroblasts (FG) cultures were used. The independent variables were 'cell type' (FG and CAL27) 'culture condition' (monocultures or co-cultures) and PBM (placebo and 36 J/cm2). The cultures were irradiated from a red LED source for mRNA expression and protein expression analyses. The autophagy markers evaluated were Beclin-1, LC3B and p62 as well as adjuvant markers (BAX Bcl-2, VEGF, CD105, CD34, PRDX1, PRDX4 and GRP78). The Cal27 cells upregulated the autophagy markers upon exposure to PBM both at the mRNA and protein expression levels, providing evidence to explain malignant cell inhibition by PBM.

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Paracoccidioidomycosis (PCM) is an infection caused by fungi of the genus Paracoccidioides and is marked by a strong predilection for men; nevertheless, some women have had developed PCM and have presented oral involvement by the disease. OBJECTIVES: To review all published cases until August 2020 of oral PCM in women, with emphasis on the presence of systemic changes, deleterious habits (tobacco and alcohol) and oral manifestation features through a systematic review. METHODS: Observational studies (both prospective and retrospective) and case reports indexed in the Embase, PubMed, Scopus, Web of Science and LIVIVO databases were selected by two reviewers in a two-phase process following the pre-established PICOS criteria. RESULTS: Twenty-five studies met the eligibility criteria and were selected for qualitative synthesis, of which 72 participants were enrolled. Brazilian White women between 40 and 50 years were the most affected and social history revealed them to be housewives or rural workers. Fifteen women (33.3% of the informed cases) presented any systemic change at the time of PCM diagnosis, namely pregnancy, HIV infection and/or depression. Moriform stomatitis was predominant and affected preferentially the gingivae and alveolar processes in the form of a single painful lesion. Most patients were treated with sulfamethoxazole + trimethoprim or itraconazole. CONCLUSIONS: Oral PCM in women is rare; some cases showed systemic changes at the time of PCM diagnosis, namely HIV infection, pregnancy and depression. New studies should be conducted to elucidate the influence of systemic alterations on the development of oral PCM in women.

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OBJECTIVES: This study approaches the history of reclassifications and redefinitions around the odontogenic keratocyst (OK), as proposed by the World Health Organization (WHO), and aims to understand the impact of those changes on the prevalence and epidemiology of odontogenic tumors (OTs). METHODOLOGY: Cases of OTs diagnosed in an Oral Pathology service between January 1996 and December 2016 were reviewed. Demographic data of patients such as age, gender and site of lesions were retrieved from their respective records. RESULTS: Within the studied period, 7,805 microscopic reports were elaborated and 200 (2.56%) of these were diagnosed as OTs. Out of these 200, between 1996 and 2005, prior to the 2005 WHO classification, there were 41 (20.5%) OTs cases, being odontoma the most frequent (23; 56.09%), followed by ameloblastoma (8; 19.51%) and myxoma (03; 7.31%). Between 2006 and 2016, after the previous 2005 WHO classification there were 159 (79.5%) OTs, being odontogenic keratocystic tumor (KCOT) the most frequent (68; 42.76%), followed by odontoma (39; 24.52%) and ameloblastoma (21; 13.20%). CONCLUSIONS: As of today, the most recent WHO classification to be followed brings KCOT back to the cyst category, which will impact on the prevalence and epidemiology of OTs; thus, this study was able to identify a considerable increase (287.80%) in the prevalence of OTs when the 2005 WHO classification was utilized. Despite being an important academic exercise, classifying odontogenic lesions and determining whether to place the odontogenic keratocyst in a cyst or tumor category is crucial to establish the correct diagnosis and treatment to follow, whether by oral medicine or oral surgery specialist, or by the general practitioner.

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Abstract Objectives: This study approaches the history of reclassifications and redefinitions around the odontogenic keratocyst (OK), as proposed by the World Health Organization (WHO), and aims to understand the impact of those changes on the prevalence and epidemiology of odontogenic tumors (OTs). Methodology: Cases of OTs diagnosed in an Oral Pathology service between January 1996 and December 2016 were reviewed. Demographic data of patients such as age, gender and site of lesions were retrieved from their respective records. Results: Within the studied period, 7,805 microscopic reports were elaborated and 200 (2.56%) of these were diagnosed as OTs. Out of these 200, between 1996 and 2005, prior to the 2005 WHO classification, there were 41 (20.5%) OTs cases, being odontoma the most frequent (23; 56.09%), followed by ameloblastoma (8; 19.51%) and myxoma (03; 7.31%). Between 2006 and 2016, after the previous 2005 WHO classification there were 159 (79.5%) OTs, being odontogenic keratocystic tumor (KCOT) the most frequent (68; 42.76%), followed by odontoma (39; 24.52%) and ameloblastoma (21; 13.20%). Conclusions: As of today, the most recent WHO classification to be followed brings KCOT back to the cyst category, which will impact on the prevalence and epidemiology of OTs; thus, this study was able to identify a considerable increase (287.80%) in the prevalence of OTs when the 2005 WHO classification was utilized. Despite being an important academic exercise, classifying odontogenic lesions and determining whether to place the odontogenic keratocyst in a cyst or tumor category is crucial to establish the correct diagnosis and treatment to follow, whether by oral medicine or oral surgery specialist, or by the general practitioner.

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BACKGROUND: Odontomas are the most frequent odontogenic tumors in the oral cavity and can result in failure of eruption of permanent teeth or be associated with impacted teeth. MATERIAL AND METHODS: The present study evaluated the prevalence of complex and compound odontomas in non-syndromic patients prior to the onset of orthodontic treatment. Panoramic radiographs of 4,267 non-syndromic patients were evaluated; 22 cases were included being 54.5% complex and 45.4% compound odontomas. RESULTS: The sample was composed predominantly by White males with mean age of 14.5 years. Complex odontomas were commonly found in the maxilla (83.3%) while compound type was mostly located on mandible (60%), presenting a significant association (P=0.027). Moreover, odontomas were significantly associated with impacted teeth (P<0.0001). The most frequently odontoma-associated impacted teeth were lower canines, followed by upper central incisors and upper canines, while impacted teeth with no odontoma were predominantly upper canines, lower second premolars and upper second premolars. Compound and complex odontomas showed mean size of 10.5 and 7.25 mm, respectively, presenting significant association between lesion size and odontoma type (P=0.021). CONCLUSIONS: Odontomas affected mainly White male patients with mean age of 14.5 years, being the complex type commonly found in the maxilla and the compound type mostly located on mandible. Furthermore, odontomas were significantly associated with impacted teeth, affecting mainly lower canines. Early diagnosis and correct treatment are essential to avoid any complications, such as prolonged retention of primary teeth and delayed eruption of permanent teeth. Key words:Odontoma, odontogenic tumors, dental anomalies.

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INTRODUCTION: The peripheral ossifying fibroma (POF) is a benign reactive lesion that exclusively arises from gingiva. The lesion may gain considerably large sizes and present peculiar clinical and radiographic features that would then allow it to be called a giant POF; in that case, its otherwise simple surgical extraction could create a challenge. Thus, we elect here, for the very first time, a plausible alternative for treating giant POF: piezosurgery followed by placement of platelet-rich fibrin (PRF). CASE PRESENTATION: A 31-year-old black male presented a large asymptomatic nodule on the lower gingiva; the lesion had caused vestibular displacement of teeth and had been present for 18 years. Following the diagnostic hypothesis of a giant POF, an excisional biopsy was performed under local anesthesia using piezosurgery (microvibration of 36,000 times/sec was used in a bone cortical working mode), which confirmed the diagnosis. The surgical procedure was facilitated with the use of piezosurgery followed by placement of PRF, being the trans- and postoperative periods occurred with no complications. One year after the treatment, the patient shows no signs of disease recurrence and remains under follow-up. CONCLUSIONS: Giant POF is a rare gingival reactive lesion that can reach large dimensions, causing teeth displacement, functional, and esthetic impairments. The lesion can be successfully managed with piezosurgery and PRF, as illustrated herein, avoiding extensive bone loss and damage to the surrounding soft tissues.

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