[Effect of driftodontics in which the method of the Vari-Simplex discipline (straight arch wire technique) was used].

: In 1979, Dr. R.G. Wick Alexander visited Japan at the invitation of the Japan Orthodontics Society to introduce the fundamental concepts and techniques of The Vari-Simplex Discipline. Since then, this method had arcused keen attention in Japan. This author attended a course of this method and has applied it clinically. The paper also examines the case of 32 male and female patients from 7 to 24 years age, to validate the effect of Driftodontics stressed by this method. As a result, regarding the upper jaw, in all 8 cases of (Formula: see text) extraction in the permanent dentition, the upper infraversional canines physiologically moved to the spaces after extraction. Regarding the lower jaw, in all 6 cases of (formula; see text) extraction in the permanent dentition, the teeth moved physiologically in desirable directions of correcting crowding in lower anterior teeth. However, in all 11 cases of non extraction in the permanent dentition, there was no tendency toward such movement (Driftodontics). On the other hand, 7 cases were observed in mixed dentition, although no teeth were extracted, teeth moved in desirable directions of correcting crowding in lower anterior teeth in 6 cases, except one case. The author believes Driftodontics to become very important principles in the orthodontic treatment.