[The floating ridge, the thickened arch: a necessary evil?]

Flabby ridge and twofold lips shouldn't exist. As far as removable muco supported prosthesis is concerned, a perfect balanced occlusion respects maximally the integrity of the osseous tissues and the soft covering tissues. Clinical situations responsible for flabby ridge and the twofold lips are described. To prevent these problems, the solution is double: the dentist has to work "lege artis" and the negligence of the patient with dental prosthesis has to be avoided. An immediate treatment is necessary modifying the existing dental prosthesis. Some advice for the manufacturing of the new prosthesis is given.