Percorrer por autor "Palinkas, Marcelo"
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- Frailty through a One Health lens : biological sex, mental health, and oral function in physically active older adultsPublication . Ferreira, Luciano Maia Alves; Brito, José; Colaço, Catarina; Palinkas, Marcelo; Brites, Ricardo; Andrade, Maia e Maia Fischel e; Botelho, João Tiago; Mendes, José João; Siessere, Selma; Regalo, SimoneFrailty is a multifactorial geriatric syndrome marked by reduced physiological reserves and increased vulnerability to adverse outcomes. This multicenter observational study adopted a One Health approach to examine the association between frailty and biological sex, denture use, and antidepressant medication, as well as their impact on bite force, in two transnational cohorts of physically active older adults. The sample included 499 individuals aged ≥60 years (295 from Brazil and 204 from Portugal), all with functional dentition and regular physical activity. Frailty was assessed using the adapted Fried phenotype and classified as non-frail (G0), pre-frail (G1), or frail (G2). Oral health, depressive symptoms (CES-D), bite force, and self-reported use of dentures and antidepressants were analyzed. Frailty was significantly associated with biological sex (p < 0.001), with higher prevalence among women, especially in G2. Antidepressant use was associated with frailty in the Portuguese cohort (p < 0.001) and in the total sample (p = 0.005), but not in Brazil. No significant association was observed between denture use and frailty. However, Brazilian participants without dentures showed significantly higher bite force (p < 0.001), indicating a functional oral health effect. Frailty was associated with female sex and antidepressant use, while bite force emerged as a complementary functional marker for geriatric assessment.
- Impact of CPAP treatment for obstructive sleep apnea on stomatognathic system function : a study on bite force, thickness, and temperature of the masseter and temporal musclesPublication . Gomes, Guilherme G. C.; Palinkas, Marcelo; Verri, Edson D.; Rossi, Ana Lívia L.; Sousa, Daniel S. de; Lattaro, Danilo H.; Hallak, Júlia C.; Ferreira, Luciano M. A.; Regalo, Simone C. H.; Siéssere, SelmaObstructive sleep apnea (OSA) affects the body due to repeated obstruction of the upper airways. Continuous positive airway pressure (CPAP) is a treatment that can influence muscle function. This nine-month longitudinal study evaluated the effects of CPAP on molar bite force and on the thickness and surface temperature of the masseter and temporal muscles in adults. The study included 12 adults aged 20–70 with moderate or severe OSA, confirmed by polysomnography, all using CPAP. Molar bite force was measured with dynamometer; muscle thickness was evaluated by ultrasound at rest and during maximum contraction; and temperature was assessed using infrared thermography. Measurements were taken before treatment and at 3, 6, and 9 months. Data were analyzed using repeated-measures ANOVA with Bonferroni correction (p<0.05). Although no significant differences in bite force were observed, only a non-significant tendency toward increased maximum molar force on both sides was noted after nine months. Ultrasound showed a significant increase in right temporal muscle thickness at rest and during contraction, and a left-side increase at rest. Nine months of CPAP therapy in adults with moderate to severe obstructive sleep apnea resulted may influence craniofacial muscle morphology without significantly altering stomatognathic function.
- Impact of high-intensity sports practice on stomatognathic system function : an observational studyPublication . Fioco, Evandro Marianetti; Palinkas, Marcelo; Barbosa, Natália de Moraes; Verri, Edson Donizetti; Ferreira, Luciano Maia Alves; Lattaro, Danilo Henrique; Silva, Gabriella Simi Gariba; Siéssere, Selma; Regalo, Simone Cecilio HallakBackground: Physical activity improves quality of life, but competitive sports emphasize performance, leading to intense training and restrictive diets that increase injury risk. This affects the stomatognathic system, underscoring the role of sports dentistry in preventing injuries and orofacial functional changes. This observational study analyzed the stomatognathic system’s functionality in male high-intensity athletes (n = 18) compared to a sedentary group (n = 18). Methods: Functional parameters were analyzed: electromyographic activity during mandibular tasks, masseter and temporal muscles thickness, and molar bite force. Results: Student’s t-test was used for analysis. At mandibular rest, male high-performance athletes showed lower electromyographic activity in the right and left masseter muscles, suggesting adaptation to training. During maximum voluntary contraction, activity was higher in the temporal and masseter muscles, especially in the left masseter, indicating hypertrophy. Electromyographic activity increased during protrusion and lateral movements, particularly in the masseter and temporal muscles, demonstrating a greater functional efficiency group of athletes. They also exhibited greater masseter muscle thickness and thinner temporal muscle thickness, with a significant difference in the right masseter muscle at rest. The group of athletes showed greater molar bite force, with significant differences, indicating greater muscle capacity. Conclusions: Sports practice promotes adaptations in the stomatognathic system, improving its functionality.