Diode laser on excision of giant peripheral odontogenic myxoma: a rare case report and literature review.

It was to report a rare case of peripheral odontogenic myxoma removed with high-power diode laser and to do an extensive review of studies of odontogenic cysts and tumors treated with high-power laser (HPL). This is a rare case of a 63-year-old male patient with a peripheral odontogenic myxoma measuring approximately 10 cm in the attached gingiva region of tooth 16 removed with a high-power diode laser (808 nm, 3 W, in continuous mode, under constant suction, with 400-µm optical fiber). A literature review was also carried out looking for articles that involved the use of HPL in the treatment of odontogenic cysts and tumors, without restriction of year or language. In the present case, there was no need for suturing, no postoperative discomfort, and minimal bleeding during the procedure. In a 12-month follow-up period, there were no signs of recurrence. Only two cases of intra-osseous odontogenic myxomas treated with HPL and 10 cases involving other odontogenic cysts and tumors were found. All studies showing HPL to be effective in treating these lesions. Despite the different types of lasers used and different parameters, it is observed that lasers are effective in the treatment of odontogenic lesions.

Gingivectomy with high-power laser for correction of the gummy smile resulting from altered passive eruption-a case series.

To compare the efficacy between the surgical techniques of gingivectomy with high-power laser (HPL) and conventional gingivectomy for correction of a gummy smile (GS) due to altered passive eruption (APE). This was a case series of six female patients diagnosed with GS associated with APE. For the conventional gingivectomy procedure and for the one using the diode laser (808 nm, 2 W, in continuous mode), the six upper anterior teeth were divided into two groups (control (CG)-# 11, # 12, # 13, and test (TG)-# 21, # 22, # 23). Analyses of intraoperative bleeding and levels of pain and postoperative tissue repair were performed. The thermal pattern analysis was performed using infrared thermography. The level of significance was set at p < 0.05. There was no intraoperative bleeding in the TGs (p = 0.002). The CG showed tissue repair significantly better than the TG on the 14th postoperative day (p = 0.004). There were no statistically significant differences regarding the level of postoperative pain between the groups (p > 0.05). Regarding the thermographic analysis, there were also no statistically significant differences (p > 0.05). HPL gingivectomy was more effective, regarding the absence of intraoperative bleeding, while the conventional technique promoted better tissue repair. No significant differences were observed in the other parameters, possibly due to the minimal damage caused by gingivectomy, with either HPL or the conventional procedure, as there was no removal of bone tissue.

ILIB (intravascular laser irradiation of blood) as an adjuvant therapy in the treatment of patients with chronic systemic diseases-an integrative literature review.

To perform an integrative review of the literature on the effectiveness of intravascular laser irradiation of blood (ILIB) as an adjunct therapy in the treatment of chronic systemic diseases. This is an integrative literature review that included non-randomized and randomized controlled clinical trials that specifically evaluated the therapeutic effect of ILIB on chronic systemic diseases, without restriction of time, and written in English. The Medical Publications (PubMed)/MEDLINE database was used. MeSH (Medical Subject Headings) was used to select search descriptors with the Boolean operators "AND/OR." After applying the inclusion and exclusion criteria, 13 articles were selected. Coronary diseases were the most prevalent, followed by type 2 diabetes mellitus, with the coronary artery being the most widely used access route for ILIB application. Despite the varied parameters and protocols for using this kind of therapy, all studies have shown satisfactory results in the patients' clinical condition. ILIB proved to be effective in all organic systems, showing some positive result. However, studies on the effect of this therapy on various diseases are still scarce in the literature, and there is a need for more well-designed clinical trials to better understand the role of ILIB in various systemic diseases.

Modified Micromarsupialization as Treatment of Ranula in a Pediatric Patient.

Ranulas are mucoceles located on the floor of the mouth. The main form of treatment for these lesions is surgical excision, but this can lead to complications such as hemorrhage, recurrence of the lesion, and damage to the lingual nerve. Thus, other therapeutic modalities are indicated, such as modified micromarsupialization, which is a simple technique and not associated with recurrences, and without the need of a new intervention in the postoperative period. An 11-year-old female child, nonwhite, presented with bubble-shaped lesion located on floor of the mouth, on the left side, with exophytic growth, sessile base, bluish coloration, measuring about 4.0 cm in diameter, showing well-defined limits, well-delimited contours and borders, smooth surface, and softened consistency. Under the diagnostic hypothesis of the ranula, a modified micromarsupialization was performed. After 90 days of observation, complete regression and repair of the lesion were observed, without recurrence. Modified micromarsupialization is a simple therapeutic modality, low cost, and well-tolerated by the patient, mainly the pediatric one, being considered very effective in the treatment of lesions of difficult clinical management, as the ranula.

Psammoma Bodies in a Large Myoepithelioma.

Myoepithelioma is a rare benign tumor of the salivary glands, in which the vast majority of neoplastic cells are myoepithelial. A rare microscopic finding in salivary gland tumors, including myoepitheliomas, is the presence of psammoma bodies (PBs), whose etiology and role in the tumors are uncertain. The objective of this study is to describe the unusual histopathologic findings, such as psammomas, of a large myopephelioma on the palate and the prosthetic restorative treatment performed after resection of the tumor. A 52-year-old woman was referred for evaluation of a tumor-like lesion, of smooth surface and normal mucosal color, measuring approximately 5 cm, on the left side hard palate, which had been identified 4 years earlier. The diagnostic hypothesis was a pleomorphic adenoma (PA), and an incisional biopsy was performed. After histopathologic analysis, a PA was suggested, and surgical resection of the tumor was performed. The histopathologic findings were compatible with myoepithelioma showing numerous calcified basophilic structures compatible with PB. Sixteen months after resection of the tumor, a removable maxillary obturator prosthesis was made because of the communication into oral and nasal cavity due from the surgical procedure. The treatment of choice for myoepithelioma is surgical excision with a nonlesional area margin. In the present report, the authors achieve good postoperative results without recurrences. After installation of the prosthesis, the patient had an excellent adaptation and acceptance, thus restoring her function and psychologic condition.

Treatment of recurrent herpes of the lower lip skin region with photodynamic therapy and photobiomodulation: case report.

The aim of the present study is to describe a case report on the treatment of recurrent herpes using Photodynamic therapy (PDT) and Photobiomodulation as the treatments of choice. A 21-year-old white man checked in in the clinic for evaluation of vesicles arranged in the lower lip skin region. The clinical diagnosis was recurrent herpes and, for treatment, PDT was chosen, using 0.1% methylene blue as a photosensitizer and a pre-irradiation time of five minutes. The Therapy XT laser was used, with a wavelength of 660 nm, power of 100 mW, in a spot area of 0.028 cm², using 4 J energy per point, having been applied on 4 points, one in the center of the lesion and three on its laterals, so that it involved the entire extension of the lesion, totaling 16 J. After 24 hours after the application of the PDT, the patient returned for photobiomodulation with a low-power laser with a wavelength of 660 nm, power of 100 mW, using energy of 1 J per point, for 10 s, being applied on 4 points, totaling 4 J. It was possible to observe complete healing after 10 days of treatment, and the patient remains in follow-up for eight months without any recurrences.

Antibacterial Effect of Photodynamic Therapy on Root Canal Disinfection Combined with Different Irrigation Protocols.

Introduction: Photodynamic therapy (PDT) is an emerging alternative therapy to conventional endodontic treatment to optimize bacterial elimination. The aim of this study was to evaluate the in vitro antibacterial effect of PDT combined with different irrigation protocols on root canals inoculated with Enterococcus (E.) faecalis. Methods and Materials: Ninety uni-radicular human premolars were prepared and contaminated with E. faecalis for 4 days. Teeth were randomly divided into six groups: positive control group (C+) consisted of conventional needle irrigation with 2.5% sodium hypochlorite (NaOCl); negative control group (C-) consisted of no treatment after contamination; PDT group as treated with 0.005% methylene blue and diode laser irradiation for 90 sec at wavelength of 660 nm, energy of 9 Joules, power of 100 mW; the fourth group consisted of NaOCl+PDT, the fifth group were treated with passive ultrasonic irrigation (PUI) with NaOCl+PDT (PUI+PDT); and the final group were treated with XP Endo Finisher with NaOCl+PDT (XP Endo+PDT). The contents of the root canals were collected with sterile absorbent paper points at two times: before and 24 h after decontamination protocols. The number of colony-forming units (CFU) was determined for each root canal. ANOVA and the Tukey test were used, with significance set at 5% (P<0.05). Results: The inhibition percentage ranged from 10.72 (C-) to 100% (XP Endo+PDT), with CFU/mL counts differing among all protocols tested (P<0.05). The different protocols significantly influenced bacterial inhibition (P<0.05). However, the XP Endo+PDT protocol resulted in the highest inhibition percentage (100%), followed by NaOCl+PDT (65.85%). Conclusions: PDT combined with different final irrigation protocols was more effective in inhibiting E. faecalis growth than photodynamic therapy alone. XP Endo was the best irrigation protocol to eradicate this microorganism.

Pleomorphic adenoma of buccal mucosa: a case report and review of the literature.

BACKGROUND: Salivary gland neoplasms are rare, accounting for 3% to 5% of all head and neck tumors, and involvement of the minor salivary glands is uncommon. Pleomorphic adenoma (PA) is the most common benign neoplasm, which mainly affects the parotid gland. However, involvement of the cheek mucosa is very rare. OBJECTIVE: This study reports a case of PA in the cheek mucosa. In addition, the etiopathogenesis, clinical and morphological features and differential diagnoses of PA are discussed, emphasizing the importance of knowledge about the characteristics of this tumor for a correct diagnosis. CASE REPORT: A 50-year-old woman presented with a nodular lesion of endophytic growth in the left cheek mucosa. The lesion was small and well-delimited and had a normal mucosa color and intact surface. An excisional biopsy of the lesion was performed, and the diagnosis was PA. CONCLUSION: Although the occurrence of PA in the minor salivary glands of the cheek mucosa is uncommon, the early establishment of a correct diagnosis and initiation of appropriate treatment are important because they permit effective management of the condition and improvement in the prognosis of patients.

Clinical and histopathological study of the oral multifocal melanoacanthoma: A case report.

Melanoacanthoma is a blackened mucocutaneous lesion, mainly affecting individuals with dark skin and exhibiting rapid development. Differential diagnosis includes nevus, amalgam tattoo and melanoma. This article reports a case of a 53-year-old white woman, who exhibited multiple blackened lesions on the gingiva and upper lip. After incisional biopsy, the presence of numerous melanin-containing dendritic cells distributed throughout the epithelial thickness, which were S-100 (+), were observed microscopically. Final diagnosis was multifocal oral melanoacanthoma. Follow-up for 28 months has shown appearing of more lesions in gingiva and upper lip. Therefore, the importance of differential diagnosis of oral melanoma with the group of oral pigmented lesions, and possible associated systemic diseases were evaluated. Key words:Melanocytes, pigmentation, oral mucosa, gingiva, differential diagnosis.

Clinicopathological and immunohistochemical analysis of spindle cell squamous cell carcinoma of the tongue: a rare case.

Spindle cell squamous cell carcinoma of the tongue is a rare variant of squamous cell carcinoma. This paper reports the case of a spindle cell squamous cell carcinoma of the tongue, in a 64-year-old male patient, and presents a review of the etiopathogenesis, clinicopathological and immunohistochemical features and treatment of the malignancy. The patient presented for evaluation of a painful swelling on his tongue. Extraoral examination revealed palpable submandibular and superior cervical lymph nodes. Based on the presumptive diagnoses of squamous cell carcinoma or malignant salivary gland neoplasm, an incisional biopsy was performed. Histopathological analysis showed a proliferation of atypical spindle cells, exhibiting extensive pleomorphism. Tumor cells were positive for vimentin, P53 and alpha-smooth muscle actin, focally positive for epithelial membrane antigen and P63, and negative for pan-cytokeratin (AE1/AE3), CK7, CD138, CD34, CD56, and S-100. The positivity index for Ki-67 was approximately 40%. The diagnosis of spindle cell squamous cell carcinoma was established and the patient was referred to a head and neck surgery service. In the oral cavity, spindle cell squamous cell carcinoma of the tongue is an aggressive variant of squamous cell carcinoma, which usually presents as an exophytic mass located on the tongue of elderly males. Due to its distinct histopathological characteristics, immunohistochemistry is a valuable and helpful tool to establish the diagnosis of spindle cell squamous cell carcinoma of the tongue.

Head and neck cancer, quality of life, and determinant factors: a novel approach using decision tree analysis.

OBJECTIVE: The goal of the present study was to investigate health-related quality of life (HRQoL) and oral health-related quality of life (OHRQoL) in patients under treatment for head and neck cancer and to identify the associated factors. STUDY DESIGN: A cross-sectional study was conducted with 102 patients undergoing treatment for head and neck cancer at 2 medical centers. Participants answered a sociodemographic questionnaire and the Brazilian versions of the Medical Outcomes Study 36 (SF-36) and the Oral Health Impact Profile (OHIP-14) questionnaires to assess HRQoL and OHRQoL, respectively. Clinical aspects, cancer staging, and treatment approach were also investigated. Descriptive and multivariate analyses were performed by using decision tree analysis with the Chi-square Automatic Interaction Detector (CHAID) algorithm. RESULTS: The decision tree revealed that reduced quality of life is associated with the clinical staging (adjusted P value = .035), patient's gender (adjusted P value = .028), and treatment approach (adjusted P value = .032). Female patients who are diagnosed with advanced head and neck cancer and undergo radiotherapy or chemotherapy are more likely to exhibit lower rates of quality of life. CONCLUSIONS: The results suggested that sociodemographic characteristics, clinical staging, and treatment approach can exert a significant influence on the quality of life of patients with head and neck cancer.

Actinomycosis in the maxilla of a young asymptomatic patient: unusual case report / Actinomicose em maxila de um paciente jovem assintomático: relato de caso incomum

ABSTRACT The aim of this study is to report an unusual case of actinomycosis in the maxilla region of an asymptomatic patient. A 21-year-old white man was referred for the analysis of panoramic radiography and cone beam computed tomography, where it was observed the presence of a hypodense lesion on the left side of the maxilla, which extended from the maxillary left central incisor to the region of the maxillary left second premolar. During intraoral examination, a depression was observed in the hard palate mucosa, as well as a fistula in the alveolar mucosa close to maxillary left central incisor, which had pulp vitality confirmed by thermal tests. A fistulography was performed, with periapical radiography, where it was found that the fistulous path did not originate from the tooth mentioned above. An incisional biopsy was performed for diagnostic purposes. However, given the inconclusive microscopic findings, four months later, a new biopsy was performed. The histopathological examination revealed the presence of a colony of microoganisms with filamentous pattern of radiated rosette, surrounded by polymorphonuclear inflammatory cells. Based on the morphological characteristics, the diagnosis of actinomycosis was established. The treatment was based on antibiotic therapy. Six months after treatment of the infection, no signs of recurrence were observed, and the patient remains in follow-up. Actinomycosis in the maxilla is an uncommon infection with a predilection for males between the ages of 20 and 60, whose treatment is antibiotic therapy associated or not with surgical excision.

RESUMO O objetivo deste estudo é relatar um caso incomum de actinomicose em região de maxila de um paciente assintomático. Um homem de 21 anos, branco, foi encaminhado para análise de radiografia panorâmica e tomografia computadorizada de feixe cônico, onde foi observada a presença de lesão hipodensa do lado esquerdo da maxila, que se estendia da região do incisivo central superior esquerdo ao segundo pré-molar superior esquerdo. Ao exame intrabucal, observou-se depressão na mucosa do palato duro, bem como fístula na mucosa alveolar próxima ao incisivo central superior esquerdo, no qual tinha vitalidade pulpar confirmada pelos testes térmicos. Uma fistulografia com radiografia periapical foi realizada, onde foi observado que o trajeto fistuloso não era originado do dente mencionado anteriormente. Foi realizada biópsia incisional para fins diagnósticos. Porém, diante dos achados microscópicos inconclusivos, quatro meses depois, uma nova biópsia foi realizada. O exame histopatológico revelou a presença de colônia de microrganismos com padrão filamentoso de roseta irradiada, circundado por células inflamatórias polimorfonucleares. Com base nas características morfológicas, foi estabelecido o diagnóstico de actinomicose. O tratamento foi baseado em antibioticoterapia. Seis meses após o tratamento da infecção, não foram observados sinais de recidiva e o paciente permanece em acompanhamento. A actinomicose da maxila é uma infecção incomum, com predileção por pacientes do sexo masculino com idade entre 20 e 60 anos, cujo tratamento é antibioticoterapia associada ou não à excisão cirúrgica.

Antimicrobial activity of limonene: integrative review / Actividad antimicrobiana del limoneno: revisión integrativa

Limonene is the main component of citrus essential oils, and can reach a concentration of up to 96%. Popularly known for its potential therapeutic effects on the body, among these we point out its broad antimicrobial activity against various types of pathogens. Therefore, the purpose of this study was to address the antimicrobial and antifungal properties of limonene compared to microorganisms of interest in dentistry, based on a bibliometric study and literature review. The following databases were analyzed: PubMed, Google Scholar, SciELO and Science Direct, from which ten articles published between 2011-2021 were selected. Most of results indicate a satisfactory antimicrobial potential, besides providing important data and perspectives regarding the indication and clinical use, in addition to innovative therapeutic modalities for diseases that affect the oral cavity, such as tooth decay, periodontal disease and candidosis.

El limoneno es el componente principal de los aceites esenciales cítricos, y puede alcanzar una concentración de hasta el 96%. Popularmente conocido por sus potenciales efectos terapéuticos en el organismo, entre ellos se destacan su amplia actividad antimicrobiana frente a diversos tipos de patógenos. Por lo tanto, el objetivo de este estudio fue abordar las propiedades antimicrobianas y antifúngicas del limoneno en comparación con microorganismos de interés en la odontología, a partir de un estudio bibliométrico y una revisión bibliográfica. Se analizaron las siguientes bases de datos: PubMed, Google Scholar, SciELO y Science Direct, de las cuales se seleccionaron diez artículos publicados entre 2011-2021. La mayoría de los resultados indican un potencial antimicrobiano satisfactorio, además de proporcionar datos y perspectivas importantes con respecto a la indicación y el uso clínico, así como modalidades terapéuticas innovadoras para enfermedades que afectan la cavidad oral, como caries, enfermedad periodontal y candidosis.

Prototyping for the treatment of late zygomatic-orbital fracture: A case report.

INTRODUCTION: Zygomatic-orbital complex fractures are the most common facial traumas that can result in severe esthetic and functional sequelae. Surgical correction of these fractures is a delicate approach and prototyping is an excellent tool to facilitate this procedure. PRESENTATION OF CASE: A 27-year-old man, a motorcycle accident victim, was hospitalized in the intensive care unit for 30days. After this period, facial fractures were treated surgically, leaving sequelae such as enophthalmos, dystopia and loss of projection of the zygomatic arch. A second intervention was planned after one year for reconstruction of the orbit with the help of prototyping. Better outcomes were achieved than in the first intervention. DISCUSSION: This report permits to compare the result of conventional surgery and the use of a prototype in the same patient. Noticeably better outcomes were achieved with the second approach. Prototyping made the surgical procedure more predictable and reduced operative time because of the possibility of using preshaped titanium plates. CONCLUSIONS: Prototyping was found to be an excellent option to overcome the deficiencies of the conventional technique, recovering the functional and esthetic characteristics of the patient's face and ensuring a markedly satisfactory outcome.

Ethnobotanical knowledge of herbalists about medicinal plants from the semiarid region in northeastern Brazil / Conocimiento etnobotánico de herbolarios sobre plantas medicinales de la región semiárida del noreste de Brasil

Medicinal plants have been used since ancient times to treat illnesses. This study aimed to identify through questionnaire the medicinal plants most frequently sold on public and street markets in some municipalities of Paraíba state, northeastern Brazil, and the knowledge of herbalists about their therapeutic indications and forms of use. The sample consisted of 28 herbalists. Fifteen plants with a dental indication were identified, including barbatimão (Stryphnodendron adstringens), aroeira (Myracrodruon urundeuva), gengibre (Zingiber officinale), romã (Punica granatum), cajueiro-roxo (Anacardium occidentale), mulungu (Erythrina velutina) and quixaba (Sideroxylon obtusfolium), as well as 21 plants used for the treatment of general diseases, including barbatimão (S. adstringens), aroeira (M. urundeuva), cajueiro-roxo (A. occidentale), quixaba (S. obtusfolium), boldo (Peumus boldus) and erva doce (Pimpinella anisum). Bottled preparations ("garrafadas")and teas were the most frequently indicated forms of use. The results suggest that herbalists have a vast traditional knowledge of the therapeutic potential of commercialized plants.

Las plantas medicinales se han utilizado desde la antigüedad para tratar enfermedades. Este estudio tuvo como objetivo identificar a través de cuestionario las plantas medicinales más vendidas en mercados públicos y callejeros en algunos municipios del estado de Paraíba, noreste de Brasil, y el conocimiento de los herbolarios sobre sus indicaciones terapéuticas y formas de uso. La muestra estuvo formada por 28 herbolarios. Se identificaron quince plantas con indicación dental, entre las que se encuentran barbatimão (Stryphnodendron adstringens), aroeira (Myracrodruon urundeuva), jenjibre (Zingiber officinale), romã (Punica granatum), cajueiro-roxo (Anacardium occidentale), mulungu (Erythrina velutina) y quixaba (Sideroxylon obtusfolium), así como 21 plantas utilizadas para el tratamiento de enfermedades generales, incluidas barbatimão (S. adstringens), aroeira (M. urundeuva), cajueiro-roxo (A. occidentale), quixaba (S. obtusfolium), boldo (Peumus boldus) y erva doce (Pimpinella anisum). Las preparaciones embotelladas ("garrafadas") y los tés fueron las formas de uso más frecuentemente indicadas. Los resultados sugieren que los herbolarios tienen un vasto conocimiento tradicional del potencial terapéutico de las plantas comercializadas.

Endodontic treatment associated with photodynamic therapy: Case report.

BACKGROUND DATA: The complete elimination of bacteria inside the root canal is a difficult task, and inconsistent removal of the innermost layer of contaminated dentin leaves bacteria behind. PDT is an adjunct to conventional endodontic treatment due to its potential to reduce bacteria and its biocompatibility. OBJECTIVE: Report a case of endodontic treatment associated with Photodynamic Therapy (PDT). STUDY DESIGN/PATIENT AND METHODS: A patient with chronic dentoalveolar abscess with radiolucent lesion next to the apexes of teeth 11 and 21 was submitted to conventional endodontic treatment associated with PDT. The canals were filled after two PDT sessions with an interval of 15days between applications. RESULTS: After six months, total regression of apical periodontitis and no fistula or associated symptoms were observed. CONCLUSIONS: The treatment proposed is a viable option for the clinician as it is easy to perform, has relatively low-cost and allows the improvement of symptoms in a short period of time.

Prevalence of oral mucosal lesions among patients with diabetes mellitus types 1 and 2.

BACKGROUND: Patients with diabetes mellitus have been associated with a number of changes in the oral cavity, such as gingivitis, periodontitis, mucosal diseases, salivary dysfunction, altered taste, and burning mouth. OBJECTIVES: To determine the prevalence of oral mucosal lesions in patients with diabetes mellitus. METHODS: A cross-sectional observational study between August and October 2012 with a convenience sampling was performed for 51 patients with diabetes mellitus (type 1 and type 2). The study consisted of two phases: 1) a questionnaire application; 2) intraoral clinical examination. For the analysis of data, we used descriptive statistics, Fisher's exact test in bivariate analysis (significance level of 0.05), and Poisson Regression. RESULTS: The prevalence of oral lesions was 78.4%. Traumatic ulcers (16.4%) and actinic cheilitis (12.7%) were the most prevalent lesions. The lips (35.3%) and tongue (23.5%) were the most common location. The bivariate analysis showed an association with the type of diabetes, and two variables (age and comorbidity) were quite close to the significance level. In the Poisson Regression analysis, only diabetes type 2 remained significant after adjusting the model. CONCLUSIONS: The results of this study show a high prevalence of oral mucosal lesions in diabetic patients. The oral mucosal lesions are mostly associated with diabetes type 2.

Produção científica em laser / LED na odontologia brasileira no período de 2015 a 2019 / Scientific production in laser / LED in Brazilian dentistry from 2015 to 2019

Objetivo:Investigar o perfil das publicações brasileiras em laser/LED de 2015 a 2019. Métodos: Foi realizado um estudo observacional, por meio de documentação indireta, através da análise dos trabalhos apresentados nas reuniões do SBPqO de 2015 a 2019. Os estudos foram classificados quanto à instituição de ensino dos pesquisadores, estado de origem da pesquisa, especialidade odontológica e tipo de estudo. Resultados: Foram identificados 563 resumos. A maior parte foi concentrada em 2019 (21,7%), sendo os lasers operando em baixa potência os mais utilizados (54,1%). O Estado de São Paulo concentrou a maioria dos resumos (67,3%), com a região Sudeste contendo o maior número de trabalhos (76,9%). Em relação à instituição de ensino, as universidades estaduais produziram a maioria dos estudos (47.8%). A especialidade de Dentística foi a que mais realizou pesquisas em laser/LED (21,7%). A maioria dos resumos (73,7%) era do tipo de pesquisa laboratorial básica. A maioria dos trabalhos selecionados não recebeu apoio financeiro (54,7%). Dentre as agências financiadoras mencionadas, as Fundações de Amparo à Pesquisa foram as mais prevalentes (26,6%). Grande parte dos trabalhos não citou o Comitê de Ética em Pesquisa (97,5%). Houve associação estatisticamente significativa entre as instituições públicas e o recebimento de fomento (p < 0,005). Conclusão: A maior parte dos resumos foi concentrada em 2019, com maior número de pesquisas no Estado de São Paulo, realizadas em instituições Públicas e na especialidade de Dentística. Foi observado um número maior de estudos do tipo laboratorial. Além disso, a maioria dos estudos não recebeu fomento para pesquisa.

Aim: To determine the profile of Brazilian publications in laser/ LED from 2015 to 2019. Methods: A retrospective observational study was conducted, using indirect documentation to analyze the papers presented at SBPqO meetings from 2015 to 2019. Results: 563 abstracts involving the use of laser/LED were evaluated and subsequently classified according to higher education research institution, state where the research was conducted, dental specialty, and type of study. Most of the abstracts involving the laser/LED were concentrated in 2019 (21.7%), with low-power lasers being the most frequently used (54.1%). Most of the abstracts were concentrated in the State of São Paulo (67.3%), with the Southeast region containing the largest number of works (76.9%). Regarding the higher education institution, the state universities produced a larger number of the studies (47.8%). Restorative dentistry was the specialty that most developed studies in the laser/LED area (21.7%). Most abstracts (73.7%) were classified as basic laboratory research. Most of the selected studies received no financial support (54.7%). Among the funding agencies mentioned, the Research Support Foundations were the most prevalent (26.6%). Most studies did not mention the Research Ethics Committee (97.5%). There was a statistically significant association between public institutions and the receipt of funding (p < 0.005). Conclusion: Most of the abstracts were identified in 2019, with a greater number of studies conducted in the State of São Paulo, in state institutions across the country, and in the specialty area of restorative dentistry. Laboratory-type studies were the most prevalent. Moreover, most studies received no funding for research.

Adenoid cystic carcinoma mimicking an oroantral fistula: a case report.

Introduction Adenoid cystic carcinoma (ACC) is one of the most frequent malignant salivary gland tumors, which commonly affects the minor salivary glands of the mouth and is rare in the nose and paranasal sinuses. In the maxillary sinus, ACC can mimic inflammatory diseases and has a poor prognosis. Objective To report a case of a 50-year-old man with ACC of the maxillary sinus whose clinical findings in the alveolar ridge mimicked an oroantral fistula. Case Report An excisional biopsy was performed and histopathologic analysis revealed ACC. Lung metastases and residual tumor in the maxillary sinus were detected by imaging methods. In view of the poor general health of the patient, no new surgical intervention was performed and he was only treated by radiotherapy and follow-up. Conclusion Although rare in the maxillary sinus, ACC should be included in the differential diagnosis of lesions affecting this site.