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- Effects of respiratory training on obstructive sleep apnea: systematic review and meta-analysisPublication . Cavalcante-Leão, Bianca; Araujo, Cristiano; Ravazzi, Glória; Basso, Isabela; Guariza‑Filho, Odilon; Taveira, Karinna; Santos, Rosane Sampaio; Neto, José; Zeigelboim, BiancaPurpose: This systematic review sought to answer the following focused question: “What are the effects of respiratory training devices on obstructive sleep apnea (OSA) outcomes in adults?” Methods: The acronym “PICOS” was used to determine eligibility criteria, which consists of (P population) = adults with mild to moderate OSA, (I intervention) = spirometry devices or breathing exercises, (C comparison) = compared to no breathing exercises in adults (> 18 years) with mild to moderate OSA, (O outcomes) = improved sleep quality (sleep quality indexes) and improved apnea-hypopnea indexes (AHI), (S study types) = randomized, pseudo-randomized, and nonrandomized clinical trials. The search was performed in the following databases: PubMed/Medline, LILACS, Scopus, Web of Science, Scopus, and Cochrane Library, in addition to gray literature through Google Scholar, Proquest, and Open Grey. The risk of bias was assessed using the Cochrane Collaboration tool. The certainty of the evidence was assessed using the GRADE tool. Meta-analyses of random effects were performed for the outcomes of interest. Results: A total of 1171 references were found. Applying the eligibility criteria, six studies were included in qualitative synthesis. Expiratory exercises showed a decrease in the apnea–hypopnea index (AHI) when compared to baseline (MD = − 8.4; 95% CI = − 12.4 to − 4.4; I2 = 19%). There was a decrease in values compared to baseline (MD = − 4.4; 95% CI = − 8.2 to − 0.6; I2 = 0%) for the Epworth Sleepiness Scale (ESS), when considering the inspiratory exercises. Both groups of breathing exercises showed a significant decrease in the mean index assessed by the Pittsburgh Sleep Quality Index (PSQI). Conclusion: Results of this meta-analysis suggests that breathing exercises lead to a measurable improvement in AHI for patients with mild to moderate OSA, as well as an improvement in sleep quality and daytime sleepiness.
- Effect and longevity of botulinum toxin in the treatment of gummy smile: a meta-analysis and meta-regressionPublication . Zengiski, Aline; Basso, Isabela; Cavalcante-Leão, Bianca; Neto, José; Santos, Rosane Sampaio; Guariza‑Filho, Odilon; Zeigelboim, Bianca; Taveira, Karinna; Araujo, CristianoObjective: The aim of this systematic review is to synthesize the evidence on the effectiveness and longevity of the botulinum toxin in the treatment of individuals with excessive gingival exposure. Methods: The search was adapted to six electronic databases and gray literature. The risk of bias was assessed using the Cochrane Risk of Bias Assessment Tool for Non-Randomized and Randomized Studies of Interventions. Meta-analyses and meta-regression were performed using random effects models. Results: A total of 5247 articles were collected during the final search in the database, resulting in 17 articles included. There was a mean decrease of 3.42 mm [95% CI = −4.50 to −2.34; I2 = 97%] in the level of gingival exposure 2 weeks after the application of botulinum toxin. The application time explained 29.58% of the observed variance (p < 0.001), with a tendency for the effect size to decrease from the second week of application onwards, with values returning close to baseline levels in 24 weeks. Conclusion: Botulinum toxin is an alternative technique considered effective for reducing gummy smile, especially for gummy smiles up to 4 mm, with a longevity of at least 12 weeks, returning close to initial values within 24 weeks after application. Clinical relevance: The knowledge about the longevity and effectiveness of botulinum toxin in the treatment of gummy smile allows for a more adequate clinical planning for these cases, as well as for clinical decisions, as for prognostic factors.