Steiner analysis seems to be both a logical correlation of the physical data and treatment criteria, which, if understood and carefully followed, will result in obtainable predictable results, and although setting narrow goals for ideal treatment allows for acceptable compromises within skeletal limits. So, Steiner’s compromises and norms are guides and not fixed values, and must be weighted and appraised for each individual case dependent upon esthetics, function and stability. It should be noted that Steiner’s reference norms were derived in quite a different manner. Those ideal reference norms were guided not so much for soft tissues as by hard tissues in Japanese. So, beauty itself is then a relative measure of balance and harmony, but most find it difficult to quantify. However, lines, angles and contours may be measured and gauged. Standards can be established to evaluate the elusive goal of beauty. The purpose of this study is to evaluate the face using Japanese patients having Steiner’s ideal norms after orthodontic treatment.
The material used for this study consisted of twenty posttreatment lateral cephalograms from patients having Angle Class I and skeletal 1 malocclusions. They were having Steiner’s ideal norms. To evaluate the facial profile, the aesthetic triangles and facial heights of Powell’s analysis were used.
As a result, those values of some patients were different from the Ideals norms of Powell’s analysis. These indicate new ideal reference norms of analyses of Steiner and Powell for Japanese are hoped to construct.