Dysphagia seems to be quite common and potentially severe in schizophrenia, which may lead to acute asphyxia or pneumonia. Dysphagia in schizophrenia could be associated with drug-induced Parkinsonism, dystonia, tardive dyskinesia, dry mouth, excessive saliva, and other complications. Inadequate oral hygiene may lead to the accumulation of plaque, which can cause oral diseases and consequently result in tooth loss. This could be one of the significant factors affecting impaired masticating and swallowing abilities.
An experimental study with random assignment will be adopted. The participants from 2 hospitals will be assigned to two groups: experimental group (n=50), and control group (n=50). The experimental group will receive 'AI-assisted Masticatory Muscle Training' sessions, each lasting 20 minutes, before each of their three daily meals. The control group will be maintained their scheduled activities in daycare as usual. The plaque index, Winkle tongue-coating index, dry mouth, repetitive saliva swallowing, saliva flow rate, biting force, tongue pressure, oral frailty, RSST, DDK, and oral care behaviors were assessed at baseline, as well as during the 3-month follow-ups. Generalized Estimating Equations (GEE) were used to analyses the indicated effects.
