Amanda Cunha Regal de Castro

No cenário esportivo, há modalidades em que são exigidas intensas contrações de distintos grupamentos musculares durante a execução de determinado movimento. Sendo assim, foi levantada a hipótese dessas contrações musculares contribuírem para o desenvolvimento ou agravamento de alterações no sistema estomatognático. Com o objetivo de investigar essa relação, foi realizada pesquisa através de questionário hospedado na plataforma Google Formulários®. Participaram da pesquisa 312 pessoas, sendo 253 praticantes de Crossfit, 21 de Levantamento de Peso Olímpico, 27 de Powerlifting e 11 de Strongman. O apertamento dentário durante os treinos foi relatado por 31,4% dos participantes (n=98); 13,5% (n=42) afirmaram ter desenvolvido bruxismo após o início da prática esportiva, e 18,2% (n=57) notaram alterações em seus dentes após iniciarem as atividades físicas em seus respectivos esportes; 21,7% (n=68) participantes alegaram sentir dores de cabeça na região do músculo temporal após realizarem seus treinos e 16% (n=50) das pessoas afirmaram sentir dores na região de cabeça e pescoço durante a execução de alguns exercícios. Foram encontradas, ainda, relações significativas entre relatos de alterações no sistema estomatognático e sensação dolorosa durante a execução de determinados exercícios (p = 0.006) como também entre esses relatos e dores de cabeça pós-treino (p < 0.001). Não foram encontradas associações significativas entre a autodeclaração como atleta competidor e alterações no sistema estomatognático (p > 0.05). Pode-se concluir que a sensação dolorosa na região de cabeça e pescoço, durante ou após o treino, é um indicativo para possíveis queixas futuras relacionadas a alterações orais.

An important parameter in diagnostic analysis and treatment planning of different biological areas is facial symmetry, and several etiological factors have been attributed to skeletal facial asymmetry. Although causality cannot be determined, previous studies have reported a relationship between the anatomical deviation of the nasal septum and facial development. Diagnosis is critical for patients in growth stages due to the association between nasal septum deviation (NSD) and abnormal growth of the nasomaxillary complex. To understand this relationship, this study aimed to investigate the influence of nasal septum deviation on fluctuating asymmetries (FA) of the nasomaxillary complex at different stages of skeletal maturation. Another goal was to determine whether an association exists between the degrees of septal deviation severity and asymmetry of the nasomaxillary complex. This was a retrospective, cross‐sectional observational study comprising 60 selected cone‐beam computed tomography (CBCT) scans that were divided into four groups (n = 15) according to the degree of septal deviation and skeletal maturation: mild deviation (MD; 0.05). However, the results of the multivariate regression revealed more specific aspects of asymmetry (asymmetry component), there was a positive correlation between the NSD angle and the palatal regions (p = 0.035 and p = 0.047, middle and posterior, respectively), and the nasal septum shape and anterior palatal regions (p = 0.039). The nasal and lateral regions did not correlate with the NSD angle in the multivariate regression analysis (p > 0.05). The results of this study indicate that there were no significant differences in the fluctuating asymmetry of the nasomaxillary complex between the mild and moderate to severe nasal septum deviation groups, in both early and late skeletal maturation stages. However, a positive correlation was observed in the degree of nasal septum deviation angle and asymmetry components of the middle and posterior palatal regions, likewise between the nasal septum shape and asymmetry components of the anterior palatal region. The diagnosis of nasal septum deviation by both physicians and dentists is important, as a relationship was observed with fluctuating asymmetry component of the palatal region. This information can guide the decision of the treatment planning for these individuals, and should be considered, especially in cases of severe septum deviation, due to the great anatomical proximity of these structures.

The wide application of additive manufacturing in dentistry implies the further investigation into oral micro-organism adhesion and biofilm formation on vat-photopolymerization (VP) dental resins. The surface characteristics and microbiological analysis of a VP dental resin, printed at resolutions of 50 μm (EG-50) and 100 μm (EG-100), were evaluated against an auto-polymerizing acrylic resin (CG). Samples were evaluated using a scanning electron microscope, a scanning white-light interferometer, and analyzed for Candida albicans (CA) and Streptococcus mutans (SM) biofilm, as well as antifungal and antimicrobial activity. EG-50 and EG-100 exhibited more irregular surfaces and statistically higher mean (Ra) and root-mean-square (rms) roughness (EG-50-Ra: 2.96 ± 0.32 µm; rms: 4.05 ± 0.43 µm/EG-100-Ra: 3.76 ± 0.58 µm; rms: 4.79 ± 0.74 µm) compared to the CG (Ra: 0.52 ± 0.36 µm; rms: 0.84 ± 0.54 µm) (p < 0.05). The biomass and extracellular matrix production by CA and SM and the metabolic activity of SM were significantly decreased in EG-50 and EG-100 compared to CG (p < 0.05). CA and SM growth was inhibited by the pure unpolymerized VP resin (48 h). EG-50 and EG-100 recorded a greater irregularity, higher surface roughness, and decreased CA and SM biofilm formation over the CG.