The comparison of cephalometric changes at upper incisor intrusion applied with different methods

The aim of this study was to provide intrusion of upper incisors with applying Connecticut Intrusion Arch (CIA) and Mini Screw and to evaluate the dental and skeletal cephalometric effects of these intrusion methods on individuals with deep bite caused by supraocclusion of upper incisors.40 adults, without making sexual distinction, who has at least 4 mm deep bite caused by supraocclusion of upper incisors included to our study. 20 individuals for each two study groups were formed as CIA and Mini Screw groups. Skeletal, dental, soft tissue measurements were done on lateral cephalograms and apical root resorption measurements were done on standart periapical radiographs that were taken from upper four incisor teeth. Statistically, Paired Student?s t test was used in intragroup comparements and independent Student?s t test was used in investigation of differences between groups. Nevertheless, the concern of variables that seen as risk factors with the amount of resorption was investigated with Pearson correlation analysis.Successfull intrusion of four upper incisor teeth with CIA and Mini screw methods and insignificant difference between two methods was determinated. Protrusion of upper and lower incisor teeth, decrease in interincisal angle and overbite and increase in overjet was stated by intrusion at both of the methods. The decline of the mesiobuccal cusp of upper first molar was observed in the CIA method. In soft tissue evaluation, decrease of upper lip length, upper lip thickness and distance of upper and lower lip to the Rickett?s plane was observed. It was detected that methods that used for intrusion caused similar ratio of root resorption.