[Video-feedback therapy with the flexible nasopharyngoscope. The potentials for modifying velopharyngeal closure and phonation deficiencies in cleft patients]. / Video-Feedback-Therapie mit dem flexiblen Nasopharyngoskop. Einflussmöglichkeiten auf den velopharyngealen Verschluss und Lautbildungsfehler bei Spaltpatienten.

Psychological interviews with cleft palate patients have revealed why a number of these patients do not profit, or do so only on a limited basis, from conventional speech therapy. They don't control articulation by means of the auditory canal. To treat these patients the video feedback therapy with the nasopharyngoscopy (Witzel et al.) was employed as the initial step. The next step was to expand on this method by establishing indication criteria, necessary diagnostic techniques, and an efficient therapy plan. In this paper a single case study is employed to discuss this method and show the results attained by its use.