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.

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.

External root thermal analysis of three different obturation techniques.

Background: The purpose of this study was to assess the external root surface thermal behavior when submitted to three different obturation techniques. Material and Methods: Forty-five single-rooted premolars were selected, prepared and randomly divided into three groups according to the studied obturation techniques: lateral condensation (LC), single cone technique (SCT) and injectable thermoplasticized technique (IT). Each tooth was placed in a customized apparatus and connected to a thermocouple. A FLIR T650sc infrared thermal camera was used to assess root temperature in a room under controlled temperature and humidity. Temperature values were recorded using the thermal camera and thermocouples before, during and 30, 60, 90, 120, 150s after obturation. Shapiro-Wilk, QQ-plot, Levene's, ANOVA-three-way, Mauchly's sphericity, Box's M and Bonferroni tests were used to assess data. The significance level was set at 5%. Results: Infrared assessment showed significant temperature changes between time intervals, obturation techniques and root thirds. Temperature increase was observed 30s after obturation for STL, LC and IT, followed by a gradual temperature decline, with temperature values similar to the initial temperature at 150s for LC and IT. SCT temperature values only returned to normal 60s after obturation in the apical third and 90s in the middle and cervical thirds. In all techniques, the temperature did not rise above the critical limit of 10°C. Conclusions: All studied obturation techniques increased root surface temperature with IT showing the highest temperature increase. However, the temperature increase does not exceed the acceptable limits, not causing damage to the surrounding tissues. Key words:Endodontics, changes in body temperature, root canal filling, thermography.

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.

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.

Reabilitação funcional e estética de dente anterior fraturado em paciente hebiátrico: relato de caso / Functional and aesthetic rehabilitation of fractured anterior teeth in a hebiatric patient: case report / Rehabilitación funcional y estética de diente anterior fracturado en paciente hebiátrico: relato de caso

Introdução: Após fratura decorrente de trauma e consequente tratamento endodôntico, os dentes têm sua resistência mecânica reduzida, sendo necessária, em alguns casos, a utilização de um retentor intrarradicular. Objetivo: Descrever um caso clínico de reabilitação de um dente anterior que apresentava fratura decorrente de trauma, de um paciente adolescente. Relato do caso: Paciente do sexo masculino, 15 anos de idade, apresentou-se com a queixa da aparência estética do dente 32. Na anamnese o paciente relatou que há cerca de 1 ano havia fraturado o referido dente enquanto brincava, e que sentiu dor apenas nas primeiras horas após o acidente, não se queixando mais de qualquer sintomatologia dolorosa desde então. Ao exame radiográfico, observou-se fratura do dente 32, além da presença de imagem radiolúcida na região periapical do mesmo dente. Assim, baseado na avaliação radiográfica e após criteriosos exames com recursos semiotécnicos empregados na Endodontia, confirmou-se o diagnóstico de necrose pulpar no referido dente. Foi instituído o tratamento endodôntico previamente ao tratamento restaurador. A reabilitação consistiu inicialmente pelo tratamento endodôntico. Na sequência optou-se pela instalação de um pino de fibra de vidro (PFV). Por fim, a reconstrução coronária foi realizada de forma direta, em resina composta e com o auxílio de uma coroa de cloreto de polivinila (PVC). Conclusão: Através do resultado final obtido, concluiu-se que esta é uma alternativa rápida e viável para casos como o apresentado, proporcionando não somente o restabelecimento funcional e estético do dente, mas também satisfação e elevação da autoestima de pacientes hebiátricos(AU)

Introduction: After fracture resulting from trauma and consequent endodontic treatment, the teeth have reduced mechanical resistance, and in some cases, the use of an intraradicular retainer is necessary. Objective: To describe a case report of rehabilitation of anterior tooth who presented a fracture due to trauma of a hebiatric patient. Case report: A 15-year-old male presented with the complaint of the aesthetic appearance of the tooth 32. During the anamnesis, the patient reported that about 1 year had fractured said tooth while playing, and who felt pain only in the first few hours after the accident, not complaining any more of any painful symptomatology ever since. Radiographic examination revealed a fracture of the tooth 32, besides the presence of a radiolucent image in the periapical region of the same tooth. Thus, based on the radiographic evaluation and after careful examinations with semiotechnical resources used in Endodontics, the diagnosis of pulp necrosis in this tooth was confirmed. Endodontic treatment was instituted prior to restorative treatment. The rehabilitation initially consisted of endodontic treatment. In the sequence, a fiberglass pin (FGP) was installed. Finally, the direct coronary reconstruction was performed, in a composite resin and with the aid of a crown of polyvinyl chloride (CPC). Conclusion: Through the final result obtained, it was concluded that this is a fast and viable alternative for cases such as the one presented, providing not only the functional and aesthetic restoration of the dental element, but also satisfaction and elevation of self-esteem of hebiatric patients(AU)

Introducción: Después de la fractura resultante de trauma y consecuente tratamiento endodóntico, los dientes tienen su resistencia mecánica reducida, siendo necesaria, en algunos casos, la utilización de un retén intrarradicular. Objetivo: Describir un caso clínico de rehabilitación de un diente anterior que presentaba fractura resultante de trauma, de un paciente adolescente. Relato del caso: Paciente del sexo masculino, 15 años de edad, se presentó con la queja de la apariencia estética del diente 32. En el anamnesis, el paciente relató que hace cerca de 1 año, había fracturado el referido diente mientras jugaba, y, en el caso de la mujer, que sintió dolor sólo en las primeras horas después del accidente, no se quejó más de cualquier sintomatología dolorosa desde entonces. En el examen radiográfico, se observó fractura del diente 32, además de la presencia de imagen radiolúcida en la región periapical del mismo diente. Así, basado en la evaluación radiográfica y después de criteriosos exámenes con recursos semiotécnicos empleados en la Endodoncia, se confirmó el diagnóstico de necrosis pulpar en el referido diente. Se ha instituido el tratamiento endodóntico previamente al tratamiento restaurador. La rehabilitación consistió inicialmente en el tratamiento endodóntico. En la secuencia se optó por la instalación de un pasador de fibra de vidrio (PFV). Por último, la reconstrucción coronaria fue realizada de forma directa, en resina compuesta y con el auxilio de una corona de cloruro de polivinilo (PVC). Conclusión: A través del resultado final obtenido, se concluyó que esta es una alternativa rápida y viable para casos como el presentado, proporcionando no sólo el restablecimiento funcional y estético del diente, sino también satisfacción y elevación de la autoestima de pacientes hebiátricos(AU)

Evaluation of the Behavior of dental Students of the State University of Paraíba Regarding Biosafety in Dental Radiology / Avaliação da Conduta dos Alunos do Curso de Odontologia da Universidade Estadual da Paraíba a Respeito da Biossegurança em Radiologia Odontológica

Durante as tomadas radiográficas na clínica odontológica, o operador entra em contato com a cavidade oral do paciente e, em seguida, com o cone de raios-X e botão de exposição, o que pode haver infecção cruzada, sem as medidas de biossegurança adequadas. O objetivo do presente trabalho foi avaliar a conduta dos alunos do curso de Odontologia da Universidade Estadual da Paraíba a respeito da biossegurança em Radiologia Odontológica. Trata-se de um estudo transversal, observacional, de caráter descritivo, realizado por meio da aplicação de questionário com perguntas relacionadas à biossegurança em Radiologia Odontológica, no qual participaram alunos do 5º ao 10º período do curso de Odontologia da referida instituição. Os alunos que estavam cursando ou haviam cursado o componente curricular Radiologia Odontológica foram incluídos no estudo. Foram respondidos 88 questionários. Os dados foram analisados por meio de estatística descritiva. No que diz respeito à preocupação com o controle de infecção, 99% dos alunos mostraram-se preocupados com biossegurança. Quanto à solução química mais utilizada para desinfecção, o álcool a 70% se mostrou o mais utilizado (63%). Em relação a prática de desinfecção do equipo, 78% não responderam à questão. Quanto à proteção dos filmes intrabucais, 97% responderam que fazem uso de barreiras mecânicas. Quanto ao procedimento feito após o uso dos posicionadores, a maioria (58%) dos alunos respondeu que utiliza soluções desinfetantes. Concluiu-se que a maioria dos alunos se mostraram preocupados com a biossegurança na clínica de Radiologia e que possuíam condutas adequadas de desinfecção antes, durante e após os procedimentos. (AU)

During radiographic taking at the dental clinic, the operator contacts the patient's oral cavity and with the X-ray cone and exposure button, which may be cross-infection, without adequate biosafety measures. The objective of the present study was to evaluate the behavior of dental students of the State University of Paraíba regarding biosafety in Dental Radiology. This is a cross-sectional, observational, descriptive study, carried out through the application of a questionnaire with questions related to biosafety in Dental Radiology, in which participated students from the 5th to 10th period of the Dentistry course of this institution. The students who were studying or had studied the curricular component Dental Radiology were included in the study. Eighty-eight questionnaires were answered. Data were analyzed using descriptive statistics. With regard to infection control concern, 99% of the students were concerned about biosafety. As for the most used chemical solution for disinfection, 70% alcohol was the most used (63%). Regarding the disinfection practice of the equipment, 78% did not respond to the question. Concerning the protection of intraoral films, 97% answered that they use mechanical barriers. As for the procedure done after the use of the positioners, the majority (58%) of the students answered that they use disinfectant solutions. It was concluded that most of the students were worried about biosafety in the Radiology Clinic and that they had adequate disinfection behavior before, during and after procedures. (AU).

Ceratocisto odontogênico em mandíbula: relato de caso / Odontogenic keratocyst in mandible: case report

O ceratocisto odontogênico (CO) é um cisto de origem odontogênica, cujo diagnóstico final é dado com base nos aspectos clínicos, radiográficos e histopatológicos. O tratamento mais comum consiste na enucleação cirúrgica. O objetivo do presente estudo foi relatar um caso de CO em região posterior de mandíbula, abordando as características clínico-patológicas e a terapia para essa lesão. Paciente do sexo feminino, 69 anos de idade, apresentou um tumor, de superfície ulcerada, na região retromolar inferior do lado direito. O exame radiográfico da região afetada revelou a presença de uma imagem radiolúcida com limites bem definidos. Após dois meses da primeira consulta e de ter feito ajuste de sua prótese mal adaptada, a paciente retornou apresentando uma lesão tumoral, sem a presença de úlcera, na mesma região. Sob as hipóteses diagnósticas de CO e de cisto residual, foi realizada biópsia excisional. Os achados histopatológicos foram compatíveis com CO. Dezoito meses após a remoção da lesão, não foram identificados sinais de recidiva. O CO possui achados clínicos e radiográficos característicos, bem como diferentes possibilidades terapêuticas, sendo estas abordagens agressiva ou conservadora. Em todos os casos, faz-se necessário o acompanhamento periódico, considerando as altas taxas de recorrência da doença... (AU)

The odontogenic keratocyst (OK) is a cyst of odontogenic origin, which final diagnosis is given from the clinical, radiological and histopathological findings. The most common treatment is surgical enucleation. The objective of the present study was to report a case of OK in the posterior mandible, approaching the clinicopathological features and treatment for this lesion. A 69-year-old female patient presented a tumor lesion of ulcerated surface in the retromolar region of the right side. Radiographic examination of the affected region revealed the presence of radiolucent image with well-defined limits. After two months of the first appointment and after having made adjustments to her poorly adapted prosthesis, the patient returned presenting a tumor lesion, without the presence of ulcers, in the same region. Under the diagnostic hypotheses of OK and residual cyst, excisional biopsy was performed. The histopathologic findings were consistent with OK. Eighteen months after the removal of the lesion there were not identified clinical and radiographic signs of recurrence. The OK has characteristic clinical and radiographic findings, as well as different therapeutic possibilities, being these approaches aggressive or conservative. In all cases, periodic follow-up is necessary, taking into account the high recurrence rates of the disease... (AU)