[Acceptable compromises for the incisor positions with standard points AS and BS]. / Akzeptable Kompromisse für die Inzisivenstellungen mit den Standardpunkten AS und BS.

The cephalometric points A and B after Downs are criticized and on the angle ANB their selective replacement by "standard-AS and BS points along with the angles ASNB and ASNBS is suggested. With 55 ideal cases of the permanent dentition it was proven by the t-test that the mean values of the latter angles vary only very little from the angle ANB. Steiner's "acceptable compromises" are compared with a new combination of "flowing norm values" using AS and BS. The correlation coefficients are considerably higher than Steiner's (r = 0.47--0.66). They are between r = 0.75 and 0.93. Also the mean deductive mistakes of the incisal parameters keep within relatively small limits. Steiner's expected relations of the ANB angle (reduction of same to one half of the original measure) seem doubtful. Probably it is mainly dependent upon the type of anomaly and the method of treatment, further upon the type of growth and age.

[Indications and contraindications for removable and fixed orthodontic appliances]. / Indikationen und Kontraindikationen für abnehmbare und festsitzende kieferorthopädische Apparate

The treatment of the changing dentition by self-regulating measures and with removable appliances is confronted with the multiband technique. Advantages and disadvantages are described. If one considers the factors of risk and the relationship between work volume and effect, removable appliances deserve preference. However, there is still a limited range of indication for the fixed appliances.