Sander F G, Fröhls M
Universität Ulm, Poliklinik für Kieferorthopadie, Donau.
Inf Orthod Kieferorthop. 1990;22(1):57-64.
After a therapy with removable appliances all the teeth showed an increased loosening degree, that means tooth mobility, in comparison to an untreated control group. All the measured patients had been in the retention phase after an average treatment time of 4 years in cases of male patients and 3.8 years in cases of female patients.
