Liset Maas-Houtekamer graduated in 1991 as a speech therapist. From that moment on she has been working as an all-round freelance speech therapist in her private office in Arnemuiden (The Netherlands). Many courses has been attended to specialize on a number of disorders. Since 2010 she has specialized in oro-myofunctional therapy with courses, treatment and research in the field of OMFT. In 2015 she became the first speech therapist in The Netherlands to be admitted to the national OMFT Quality Register. In 2014 she started a branch office in Middelburg, within the walls of OrthoCenter Middelburg, where exclusively oro-myofunctional therapy is performed. There is a pleasant cooperation with dentists and orthodontists in this region.