Oral Rehabilitation of Marginal Maxillectomy Patient After Local Flap Reconstruction.

The treatment of oral cancer can lead to various oral complications, including oral defects, tissue deformation, and trismus in patients who have undergone oral cancer surgery with resection of any part of the maxillary. Restoring the ability to chew, swallow, and maintain esthetics is essential and a significant challenge. The aim of this study was to report a successful clinical case of preprosthetic surgery and prosthetic rehabilitation of a 65-year-old man who had undergone marginal maxillectomy, resulting in tissue scarring and a significant reduction in maximal mouth opening. The oral rehabilitation was achieved using a conventional removable prosthesis. This case demonstrates that preprosthetic surgery combined with conventional removable prosthesis is an effective strategy for complex rehabilitations providing functional and esthetic improvement in the affected area for patients with marginal maxillectomies resulting from oral cancer.

E-learning as a strategy in dentistry in the context of COVID-19: a path to follow?

The current study aims to assess the effectiveness of e-learning in compliance with the new biosafety recommendations in dentistry in the context of COVID-19 applied to the clinical staff of a dental school in Brazil. A quasi-experimental epidemiological study was carried out by means of a structured, pre-tested online questionnaire, applied before and after an educational intervention, using an e-learning format. After data collection, statistical tests were performed. A total of 549 members of the clinical staff participated in the study in the two collection phases, with a return rate of 26.9%. After the e-learning stage, a reduction was found in the reported use of disposable gloves, protective goggles, and surgical masks. The course had no impact on the staff's knowledge concerning the proper sequence for donning PPE and showed 100% effectiveness regarding proper PPE doffing sequence. Knowledge about avoiding procedures that generate aerosols in the clinical setting was improved. Despite the low rate of return, it can be concluded that online intervention alone was ineffective in significantly improving learning about the new clinical biosafety guidelines. Therefore, the use of hybrid teaching and repetitive training is highly recommended.

E-learning as a strategy in dentistry in the context of COVID-19: a path to follow?

Abstract The current study aims to assess the effectiveness of e-learning in compliance with the new biosafety recommendations in dentistry in the context of COVID-19 applied to the clinical staff of a dental school in Brazil. A quasi-experimental epidemiological study was carried out by means of a structured, pre-tested online questionnaire, applied before and after an educational intervention, using an e-learning format. After data collection, statistical tests were performed. A total of 549 members of the clinical staff participated in the study in the two collection phases, with a return rate of 26.9%. After the e-learning stage, a reduction was found in the reported use of disposable gloves, protective goggles, and surgical masks. The course had no impact on the staff's knowledge concerning the proper sequence for donning PPE and showed 100% effectiveness regarding proper PPE doffing sequence. Knowledge about avoiding procedures that generate aerosols in the clinical setting was improved. Despite the low rate of return, it can be concluded that online intervention alone was ineffective in significantly improving learning about the new clinical biosafety guidelines. Therefore, the use of hybrid teaching and repetitive training is highly recommended.

Staff Knowledge and Attitudes Towards COVID-19 New Biosafety Practices at a Brazilian Dental School

ABSTRACT Objective To evaluate knowledge and attitudes towards biosafety recommendations during the COVID-19 pandemic at a Brazilian dental school. Material and Methods A cross-sectional study was performed in 2020 with the clinical staff of a Brazilian dental school. The whole clinical staff was sent pre-tested self-administered online questionnaires about knowledge and attitudes towards the recommendations for biosafety in dental settings in the context of the COVID-19 pandemic. Descriptive statistical analyses were carried out for proportion calculation. Results Disposable head covering caps, isolation gowns, and gloves were the most frequently reported personal protective equipment (PPE). The rates ranged from 52.9% to 88.5% for N95 respirators, from 68.6% to 92.6% for face shields, from 47.4% to 67.5% for conventional eye protection shields, and 45.1% to 77.4% for eye protection with solid side shields. Chlorhexidine gluconate was the most frequent mouthwash indicated before clinical dental care. The percentage of agreement to provide clinical care to patients with suspected COVID-19 varied from 23.5% to 50.0%. The percentage of respondents who agreed that bioaerosol-generating procedures should be avoided was higher than 74.5%. Less than 50% knew the correct sequence for doffing of PPE. Conclusion This study revealed important gaps in knowledge and attitudes towards prevention and control measures against infection in dental environments in the context of COVID-19, indicating the need for improvements.

Avaliação da superfície de fios ortodônticos de NiTi após utilização de produtos contendo fluoretos / Evaluation of NiTi orthodontic wires surfaces after use of fluoride products

A resistência à abrasão e à corrosão de três fios ortodônticos de níquel titânio (Superelastic, 3M; Turbo Wire, Ormco e Copper NiTi, Ormco) frente ao uso de flúor e escovação foram avaliados através de simulação in vitro. Foram utilizadas a microscopia eletrônica de varredura (MEV) para avaliação da morfologia superficial e espectroscopia por dispersão em energia (EDS) para avaliação da composição química elementar dos fios antes e após os experimentos. Vinte segmentos de cada fio foram obtidos e divididos em dois grupos, contendo dez amostras de cada tipo, sendo que, em um grupo, as amostras foram imersas em solução de fluoreto de sódio 0,05% por tempo equivalente a 1 mês de bochechos diários de 1 minuto. No outro grupo, foram feitas escovações dos fios por período de tempo referente a um mês de 3 escovações diárias com creme dental contendo fluoreto de sódio a 0,24%. As imagens obtidas das superfícies dos fios foram analisadas por comparação observacional descritiva. Todas as amostras usadas no experimento se mostraram susceptíveis a modificações diante da escovação com pasta contendo fluoreto de sódio. Já frente à imersão em solução, os fios que mais apresentaram alterações foram o Superelastic e o Copper NiTi, mostrando aumento de pites de corrosão e aprofundamento de sulcos preexistentes. A composição química elementar dos fios manteve-se inalterada frente aos experimentos. Concluiu-se que a escovação e os fluoretos afetam as superfícies dos fios, podendo aumentar o atrito e o acúmulo de biofilme na superfície durante o tratamento ortodôntico.(AU)

Abrasion and corrosion resistance of three nickel-titanium orthodontic wires (Superelastic, 3M; Turbo Wire, Ormco and Copper NiTi, Ormco) under sodium fluoride usage and tooth brushing were evaluated through in vitro simulation. Scanning electron microscopy (SEM) for morphological surface analysis and energy dispersive spectroscopy (EDS) for elementary chemical composition were used for evaluation of the wires before and after assays. Twenty segments of each wire were obtained and divided in two groups containing ten samples of each type. One group of samples was immersed in sodium fluoride solution 0.05% during equivalent time of one month of daily 1 minute mouthwashes. In the other group the wires were brushed three times daily using a dental cream with sodium fluoride 0.24% during one month. Wire surfaces images obtained were analyzed by means of comparative observational description. All samples exhibited superficial changes under tooth brushing with fluoride dental cream. Considering fluoride solution immersion, Superplastic and Copper NiTi showed increasing in pitches of corrosion and deepening of existing grooves. Elementary chemical composition of wires remained unaltered. Concluding, tooth brushing and fluorides affect the surfaces of NiTi orthodontic wires, which may increase the friction and accumulation of biofilm in the surface during orthodontic treatment. (AU)

Endodontic management of a long-standing horizontal mid-root fracture: case report in a young patient.

The purpose of this case report was to present the successful endodontic management of a long-standing horizontal mid-root fracture in a permanent maxillary central incisor. A 12-year-old boy with a history of traumatic injury sustained 15 months previously to the maxillary central incisor presented for treatment. Clinical examination revealed physiological mobility, pulp chamber exposed to the oral environment, and the buccal mucosa with a sinus tract in the area of the traumatized tooth. A radiolucent lesion at the fracture line and apical fragment with obliteration of the root canal space were observed radiographically. Conservative root canal treatment of the coronal segment was performed using calcium hydroxide as an intracanal dressing. The calcium hydroxide was replaced every 8 weeks for 10 months. A hard tissue barrier was observed after this period, and the coronal fragment of the root canal was filled. After 4 years, the tooth was asymptomatic and functional and no periapical lesion was observed.

Sialoadenite supurativa aguda em glândula submandibular / Acute suppurative sialoadenitis in the submandibular gland

A sialoadenite aguda consiste em uma inflamação aguda das glândulas salivares de origem infecciosa. Geralmente se caracteriza por edema, aumento de temperatura, enrijecimento, dor e diminuição ou ausência de salivação da glândula afetada. Porém, é difícil avaliar corretamente essas mudanças, somente através de exame clínico, portanto, os exames complementares podem auxiliar de forma fundamental no diagnóstico e tratamento. Neste trabalho, é descrito um caso de sialoadenite supurativa aguda em glândula submandibular no qual uma paciente de 70 anos, leucoderma, gênero feminino, apresentava queixa de discreta sintomatologia dolorosa, tendo o diagnóstico sido confirmado através do exame de ultrassonografia e o tratamento de escolha medicamentoso.

Acute sialoadenitis is an acute inflammation of the salivary glands resulting from an infection. It is generally characterized by edema, an increase in temperature, stiffness, pain, and reduced or absent salivation of the gland affected. However, it is difficult to correctly evaluate these alterations relying solely on a clinical examination, since complementary investigations may be of fundamental importance in the diagnosis and treatment of this disorder. This paper reports a case of a white 70-year-old female patient, leukoderma, presenting with mild pain, who was diagnosed as having acute suppurative sialoadenitis in the submandibular gland. The diagnosis was confirmed by ultrasound and drugs were the treatment of choice.

Tracheotomy for a foreign body in the larynx.

INTRODUCTION: In the normal population, inadvertently swallowed foreign objects enter the gastrointestinal tract more frequently than the tracheobronchial tree. There is a typical patient population that is at higher risk for aspiration. DISCUSSION: Sequelae may range from relatively benign partial obstruction to the immediately life-threatening total airway obstruction. Foreign objects lodged in the upper aspect of the trachea may be retrieved with simple instrumentation. CONCLUSION: Some cases may complicate and may require direct access through a tracheotomy, as the case shown in this paper.

Migration of tip knife blade through middle-third facial tissues.

PURPOSE: The aim of this paper is to report a case of knife aggression with a spontaneous migration of a tip blade lodged in deep tissues 6 months after trauma. PATIENT: An 18-year-old woman that was a victim of impalement injury with a knife by her boyfriend on the glabella region with a blade fracture and tip lodging into middle-third facial tissues. RESULTS: After conservative management of a knife tip, a spontaneous migration occurred with its exposition on the zygomatic area, possibly due to a functional treatment to improve mouth opening. CONCLUSION: Fracture of knife blade with a tip retained deeply into the tissues is considered foreign body, and its removal must be considered. Nevertheless, the basis for this removal takes account the cost-benefit ratio, and if a conservative management was chosen, the clinical and radiological accompanying is mandatory to prevent and to treat its possible complications.

Ameloblastoma: consequências de um caso mal diagnosticado / Ameloblastoma: consequences of a misdiagnosed case

O presente relato descreve um caso de ameloblastoma ocorrido em região de incisivos inferiores, diagnosticado, erroneamente como alteração periapical de origem endodôntica e periodontal. O paciente foi tratado por um período de 4 anos, durante o qual não foi observada a regressão da lesão. Quando o paciente foi encaminhado para a clínica de Estomatologia da Faculdade de Odontologia da Universidade Federal de Minas Gerais, através dos examens clínico, radiográfico e biópsia incisional, a lesão foi diagnosticada como ameloblastoma. O paciente foi submetido à cirurgia de ressecção parcial em bloco da mandíbula. O caso expõe a mutilação extensa ocorrida com conseqüência de um equívoco no diagnóstico inicial.

Nevo branco esponjoso - relato de caso clínico e revisão de literatura / White sponge nevus - a case report and review of literature

Nevo branco esponjoso é uma condição rara, autossômica dominante, com alto grau de penetrância e expressividade variada. Clinicamente, apresenta-se como placas brancas, benignas, envolvendo a mucosa bucal e mais raramente outras mucosas, como esôfago, genitália e reto. O objetivo deste trabalho é descrever os aspectos clínicos e histopatológicos de um paciente portador de nevo branco esponjoso.

Facial fractures: a 1-year retrospective study in a hospital in Belo Horizonte

Um estudo retrospectivo foi realizado para avaliar fraturas faciais em pacientes atendidos no ano de 2000 em um hospital público de Belo Horizonte. As informações coletadas incluíam idade, sexo, etiologia, distribuição do trauma de acordo com o dia da semana e o mês, o local anatômico da fratura e o tratamento. As análises envolveram estatísticas descritivas, teste qui-quadrado, teste Bonferroni e análise de variância. Foram encontradas 1.326 fraturas de face em 911 pacientes. A maioria das fraturas ocorreu em adultos na faixa etária de 21 a 30 anos. Os homens foram mais acometidos do que as mulheres, numa proporção homem:mulher de 4,69:1. Os traumas causadores de fraturas faciais ocorreram predominantemente nos fins de semana. Os acidentes de moto e bicicleta foram a maior causa de trauma, seguidos por violência interpessoal, acidentes automobilísticos e quedas. Quando analisada a relação entre o gênero e a etiologia das fraturas de face, observou-se uma associação estatisticamente significativa entre essas variáveis (p < 0,001). Houve também uma associação entre a idade dos pacientes e a localização das fraturas (p = 0,0014). O osso facial mais fraturado foi a mandíbula, seguida por complexo zigomático e nariz. O tratamento conservador foi realizado na maioria dos casos. Houve diferenças estatisticamente significativas entre o tipo de tratamento instituído e a localização da fratura (p < 0,001).

Facial fractures: a 1-year retrospective study in a hospital in Belo Horizonte.

A retrospective study was performed to assess facial fractures in patients treated at a public hospital in Belo Horizonte, in 2000. The data collected included age, gender, etiology, distribution of maxillofacial trauma considering day of the week and month, anatomic site of the fracture, and treatment. The analyses involved descriptive statistics and chi-squared test, Bonferroni test and analysis of variance. A total of 1,326 facial fractures were found in 911 patients. Most fractures occurred in adults with age ranging from 21 to 30 years. Men were more affected than women, with a male-female ratio of 4.69:1. Accidents causing facial fractures occurred predominantly on weekends. Bicycle and motorcycle accidents were the major cause of trauma, followed by interpersonal violence, automobile accidents, and falls. When the relation between the gender and the etiology of facial fractures was analyzed, a significant relation was noted between these variables (p < 0.001). There was also a relation between the patients' age and the site of the fractures (p = 0.0014). The mandible was found to be the most commonly fractured bone in the facial skeleton, followed by the zygomatic complex and the nose. A non-surgical approach was chosen in most cases. There were significant differences between the kind of treatment applied and the site of the fracture (p < 0.001).