Background: Temporomandibular disorder (TMD) belongs to a heterogeneous group of musculoskeletal and neuromuscular conditions involving the temporomandibular joint complex, musculature and adjacent components. These conditions can generate signs and symptoms and be influenced by an altered biopsychosocial condition. Objective: This study aims to seek information to assist the patient in the presence of TMD signs and symptoms and Orofacial Pain, associated with the period of social isolation during the COVID-19 pandemic. Material and methods: For the preparation of this manual, a bibliographic search was performed in the databases PubMed, Latin American and Caribbean Health Sciences Literature (LILACS), BBO (BVS), Scopus, Web of Science and The Cochrane Library, using the keywords: orofacial pain, temporomandibular disorders, bruxism, stress, anxiety, biopsychosocial, diagnosis, self-care with important information on how to reduce and control the signs and symptoms of TMD and Orofacial Pain in this moment of pandemic that we are experiencing a social detachment. Results: The results show that the pandemic of COVID-19 and the need for social isolation, generates psychological impact that raises the pattern of anxiety and can directly affect patients with bruxism and TMD. Conclusion: Psychological factors associated with the pandemic can lead to an increased risk of developing, worsening and perpetuating bruxism, especially waking bruxism and TMD, so dentists should be aware of the occurrence of signs and symptoms to manage the multifactorial aspects of this condition. At that time, individual self-management strategies are advised for the patient, which consist of self-massage techniques, body education, exercise practices, sleep hygiene, meditation and making available the use of tools and online devices that facilitate this activity.KeywordsOrofacial pain; Temporomandibular disorders; Bruxism; Stress; Anxiety; Biopsychosocial; Diagnosis; Self-care; COVID-19.
The distribution of light intensity of three light-curing units (LCUs) to cure the resin-based composite for dental fillings was analyzed, and a homogeneity index [flat-top factor (FTF)] was calculated. The index is based on the M2 index, which is used for laser beams. An optical spectrum analyzer was used with an optical fiber to produce an x-y power profile of each LCU light guide. The FTF-calculated values were 0.51 for LCU1 and 0.55 for LCU2, which was the best FTF, although it still differed greatly from the perfect FTF = 1, and 0.27 for LCU3, which was the poorest value and even lower than the Gaussian FTF = 0.5. All LCUs presented notably heterogeneous light distribution, which can lead professionals and researchers to produce samples with irregular polymerization and poor mechanical properties.
ResumoO objetivo deste estudo foi verifi car a resistência à compressão de três compósitos usados em restaurações diretas (Surefi l -Dentsply; Concept -Vigodent; Esthetx -Dentsply) polimerizados através de dois tipos de aparelhos fotopolimerizadores: um de luz halógena (Gnatus) e outro de diodo emissor de luz (LED) (Gnatus). Foram confeccionados 30 corpos de prova, sendo 10 para cada material, cada um com 4mm de diâmetro por 6mm de comprimento. Cinco corpos de prova de cada material foram polimerizados com luz halógena e cinco com LED. A manipulação e a polimerização dos materiais foram feitas seguindo as instruções dos fabricantes. Após a confecção, os corpos de prova foram levados à máquina de ensaio (Instron 4204) com carga de 5KN e velocidade de 1,0mm/min para o ensaio da resistência à compressão. Os resultados foram submetidos à análise estatística (ANOVA) e indicaram não haver diferença estatisticamente signifi cante entre as médias. Palavras-chave: Resinas compostas; Materiais dentários. AbstractThe purpose of this study was to verify the compression resistance of three composites used in direct restorations (Surefi l -Dentsply; Concept -Vigodent; Esthetx -Dentsply) polymerized through two types of curing lights: halogen (Gnatus) and light emitted diode (LED) (Gnatus). We made 30 bodies of evidence, 10 for each material, with 4mm in diameter by 6mm in length. Five bodies of evidence for each material were polymerized with halogen light and fi ve with LED. The polymerization and manipulation of materials were made following the instructions of manufacturers. After confection, the bodies of evidence were taken from machine test (Instron 4204) with load of 5KN and speed of 1.0mm/min for the test of compression resistance. The results were subjected to statistical analysis (ANOVA) and showed no statistically signifi cant difference between mean.
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