Speech-language-hearing therapists （ST） assist the millions of individuals with communication disorders and swallowing problems. We provide assessments, treatment, and other assistance necessary to maximize our clients’ communication capacities. We provide services to improve our clients’ impaired functions, and maintain and/or improve their residual functions. In rehabilitation, we need to adapt methods to suit the patients; dental prostheses are a good way to improve their speech and swallowing. Though not many ST cooperate with dental staff in terms of numbers, this article describes three cases of cooperation with ST dentists, the effectiveness of the treatment method, and finally what is necessary in cooperation.