الفهرس | Only 14 pages are availabe for public view |
Abstract Indirect bonding is considered to be a marvelous advancement in orthodontics over the last decade. It is of great use to the orthodontist through reducing chair time, providing patient comfort, and improving bracket placement accuracy. Precise bracket positioning is of great importance in efficient biomechanics application and in expressing the full potential of a preadjusted edgewise appliance, as well as providing less chair side time. Many researchers have tried their methods to accomplish indirect bonding by changing their ways during clinical or laboratory procedures. Also many studies have been conducted in order to test the indirect technique effectiveness. Actually, only few reports assessed the clinical reliability of the computer aided indirect bonding techniques either through complete trays compared with sectional trays, In this study we evaluated the accuracy of the transfer tray in both complete computer aided trays and sectional computer-aided trays, 20 participants were enrolled in this study from the out-patient clinic of the Orthodontic Department of the Faculty of Dentistry Ain-Shams University and were randomly allocated in two groups. Measurements in six positional discrepancies (Mesio-distal, Occlusogingival, Buccolingual, Rotation, Tip, and Torque) were calculated and pre-transfer vs post-transfer data were compared digitally. Conclusions 124 Conclusions The following conclusions could be derived from the results of this study: 1- Both Computer-aided indirect bonding transfer methods can be used with confidence as it is accurate and within the clinically accepted limits. 2- Sectional computer aided indirect bonding method revealed better results in all dimensions as it had better control, better tray seating and more accurate transfer and can be used in cases with mild crowding. 3- Both methods are technique sensitive. 4- Although transfer errors were mainly in occlusogingival dimension towards gingival and in buccolingual towards buccal direction, still errors were within clinically acceptable limits. 5- Computer-aided indirect bonding proved better time frame compared to conventional indirect bonding. 6- Premolars had greater transfer errors in bracket position than do anterior teeth. 7- Excessive pressure on IBT could affect brackets position accuracy. Recommendations 125 Recommendations 1) Using color coded adhesive material for easier detection of excess composite. 2) Gingival guide can be used to ensure proper tray seating. 3) Tray design modification using bracket positioning jigs can result in better access for excess composite removal. 4) For cases with severe crowding, tray segmentation is recommended for easier seating and more accurate transfer |