This document outlines a PROSPERO pre-registered protocol for a systematic
review regarding articulatory changes in speech following oral or orophayrngeal
cancer treatment. Treatment of tumours in the oral cavity may result in
physiological changes that could lead to articulatory difficulties. The tongue
becomes less mobile due to scar tissue and/or potential (postoperative)
radiation therapy. Moreover, tissue loss may create a bypass for airflow or
limit constriction possibilities. In order to gain a better understanding of
the nature of the speech problems, information regarding the movement of the
articulators is needed since perceptual or acoustic information provide only
indirect evidence of articulatory changes. Therefore, this systematic review
will review studies that directly measured the articulatory movements of the
tongue, jaw, and lips following treatment for oral or oropharyngeal cancer.

本文介绍了一项针对口腔或咽部癌症治疗后言语障碍的系统性审查方案，以直接测量患者口腔各器官运动作为研究焦点，以期获得更好的关于口腔癌症治疗后言语问题的认识。