Tran A, Oakley M, Paye C, et al. Multitaper Spectrum Analysis of Consonants Produced by Patients With Dentofacial Disharmonies. Journal of Speech, Language, and Hearing Research. doi:doi:10.1044/2023_JSLHR-23-00280
This study investigates differences in American English consonants produced by patients who present with various dentofacial disharmonies (DFDs), including severe overbites (Class II), underbites (Class III), and anterior open bites. Previous studies have found that patients with these malocclusion types all produce lingual sibilants and plosives with increased spectral center of gravity and increased spectral variance relative to controls. This result is puzzling since some DFD groups differ from controls in opposite ways, and it is also difficult to interpret because spectral moment measures are affected by a wide range of speech and nonspeech factors.
