Sleep‐related bruxism, microarousals and oxyhaemoglobin desaturations in sleep stages: A cross‐sectional study in a large apnoeic population.

Autor:	de Miranda Diniz, Silvana Alkmim, de Magalhães Lopes, Regina, Guedes, Luciana Macedo, Bruzinga, Fábio Fernandes Borém, de Aguilar Seraidarian, Karolina Kristian, de Magalhães Barros, Vinícius, de Barros Massahud, Maria Letícia, Seraidarian, Paulo Isaias
Předmět:	OXYGEN saturation CROSS-sectional method PEARSON correlation (Statistics) DATA analysis HEMOGLOBINS SCIENTIFIC observation ELECTROENCEPHALOGRAPHY KRUSKAL-Wallis Test SLEEP bruxism MANN Whitney U Test CHI-squared test DESCRIPTIVE statistics MASTICATORY muscles SLEEP apnea syndromes STATISTICS POLYSOMNOGRAPHY DATA analysis software SLEEP stages COMORBIDITY DISEASE complications
Zdroj:	Journal of Oral Rehabilitation; Oct2024, Vol. 51 Issue 10, p2140-2149, 10p
Abstrakt:	Background: Sleep‐related bruxism (SB) is the habit of grinding or clenching the teeth during sleep, mediated by the non‐peripheral central nervous system. Purpose: The objectives of this cross‐sectional study were to evaluate associations between SB, microarousals and oxyhaemoglobin desaturations and to compare the frequency of SB and microarousals in sleep stages, in an apnoeic population. Methods: Two hundred and forty individuals composed the sample, who underwent a single full‐night polysomnography. Self‐reports and clinical inspections were not considered for assessing SB. The polysomnographic assessment of SB was performed using electrodes placed on masseter muscles and chin. SB was defined as more than two events of rhythmic masticatory muscle activity per hour of sleep. Microarousals were considered when there were abrupt changes in electroencephalogram frequencies, without complete awakening, lasting from 3 to 15 s. Oxyhaemoglobin desaturations were defined as significant drops (≥3%) in basal oxygen saturations. With these data, SB, microarousals and oxyhaemoglobin desaturations were evaluated and submitted to statistical analysis. Results: Statistically significant differences were observed between bruxers and non‐bruxers when comparing the rates of microarousals (p <.001) and oxyhaemoglobin desaturations (p =.038). There was a higher number of SB and microarousals in NREM (non‐rapid eye movement) two sleep stage (p < 0.001). Bruxers had a greater risk of higher numbers of microarousals (OR = 1.023; p =.003), which did not occur for oxyhaemoglobin desaturations (OR = 0.998; p =.741). Conclusions: A higher number of microarousals presents relationship with SB; associations between SB and oxyhaemoglobin desaturations remained inconclusive; higher frequency of SB and microarousals was observed in NREM 2 sleep stage. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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