الفهرس 
AcknowledgementOnly 14 pages are availabe for public view
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Abstract
The sample of this study was consisted of nineteen patients. The patients were divided randomly into two groups and were treated separately as follows: group I: was treated using passive self-ligating ceramic orthodontic brackets with stainless steel archwire slot liner. group II: was treated using conventional stainless steel orthodontic brackets ligated with elastomeric ligature. The patients were treated orthodontically within the initial leveling and alignment for the 6 month duration beginning with the same sequence of 0.014, 0.016, 0.016 × 0.022 inch nickel-titanium archwires and 0.016 × 0.022 inch stainless-steel archwire. Each archwire was remained for 1.5 months, and it was replaced with the previously mentioned sequence. CBCT was obtained in two time intervals, before beginning the orthodontic treatment and 6 months after it. On comparing the changes in upper and lower incisors in both groups regarding LABT at L1 and LABT at L2, the results revealed no significant difference changes. On comparing the changes in upper incisors in both groups regarding ARR, the results revealed no significant difference changes. On comparing the changes in lower incisors in both groups regarding ARR, the results showed a significant difference changes, which showed a statistically significant decrease in the ARR for the conventional group.