Orthognathic speech pathology: impacts of Class III malocclusion on speech.

ABSTRACT:

Introduction

Patients with dentofacial disharmonies (DFDs) seek orthodontic care and orthognathic surgery to address issues with mastication, esthetics, and speech. Speech distortions are seen 18 times more frequently in Class III DFD patients than the general population, with unclear causality. We hypothesize there are significant differences in spectral properties of stop (/t/ or /k/), fricative (/s/ or /ʃ/), and affricate (/tʃ/) consonants and that severity of Class III disharmony correlates with the degree of speech abnormality.

Methods

To understand how jaw disharmonies influence speech, orthodontic records and audio recordings were collected from Class III surgical candidates and reference subjects (n = 102 Class III, 62 controls). A speech pathologist evaluated subjec

SUBMITTER: Lathrop-Marshall H 

PROVIDER: S-EPMC9127721 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature