Comparison of speech changes caused by four different orthodontic retainers: a crossover randomized clinical trial - Lorenzoni, Diego Coelho; Henriques, José Fernando Castanha; Silva, Letícia Korb da; Rosa, Raquel Rodrigues; Berretin-Felix, Giédre; Freitas, Karina Maria Salvatore de; Janson, Guilherme (2024)