Tehran University of Medical Sciences Acta Medica Iranica 0044-6025 0 3-4 1977 12 15 129 136 A. Vojdani H. Horgian 2015 09 28 Through our experience gained with adult patients during the last ten years we have found it useful to divide them into three groups:- l- Those who are very strongly motivated to accept orthodontic treatment for cosmetic purposes and with whom treatment will usually be satisfaotory. 2- Those who are suffering from anxiety states and who have developed a fixation on a dental fault and with whom it is very unwise to begin treatment before a favourable paychiatric report is obtained. 3- Those patients who need treatment before prosthetic rehabilitation or for other physical disorders and in whom treatment mayor may not be successful, depending on the degree of co-operation shown by the patient and on good teamwork between dental specialists. https://acta.tums.ac.ir/index.php/acta/article/view/4215 https://acta.tums.ac.ir/index.php/acta/article/download/4215/4190