Dependability Of A Digital Indirect Bonding Approach Using E-models And Two Transfer Trays

Tarek Eissa, Wael Rifai, Mohamed El-Shal, Mohamed Ibrahim
2022 Egyptian Orthodontic Journal  
Orthodontics have been affected by digital technology, including diagnostic tools, treatment planning, appliance production, and 3D printing. To enable bracket arrangement more precisely and effectively, various CAD applications were available. Numerous research that examined the effectiveness and precision of the digital indirect bonding approach discovered that it is, overall, an effective solution. However, there was little investigation on the literatures regarding the external reliability
more » ... f digital indirect bonding systems. Aim of the study: to assess digitally the amount of variation in bracket locations that occurred during their transfer using an indirect bonding tray within the patient's mouth, as well as the exterior accuracy of the measurements. Materials and methods: Ten patients-four men and six women-with ages ranging from 15.9 to 23.4 years (mean 19.647 years, SD 2.232) had their upper arches' PVS impressions taken, which were then scanned using a lab scanner to create STL files for use in digital models. 100 digital indirect bonds By placing brackets on digital models utilising Ortho Analyzer (3Shape) software, American Orthodontic minimaster braces were applied to the upper arch. After that, a double transfer tray will be built, loaded with braces, and printed in 3D to bond within the patient's mouth. Following that, the CEREC omnicam scanned the bonded brackets. The patient's mouth's bracket position deviations were measured using the Geomagic Control X software. Results: From (-173.1131.65 µm) to (200.2132.86 µm), the total length of the linear measurements. These aberrations, which corresponded to the top right first premolars and upper left canines, respectively, were occlusogingival and in-out in nature. Overall angular readings ranged from 0.51 to 1.94 with a tolerance of 0.03 degrees. These deviations indicated the upper right canines and upper left central incisors, respectively, and were associated to the mesiodistal tip. Discussion: The present study's overall angular differences varied from 0.51° to 1.94° and its overall linear differences ranged from 0.1731 mm to 0.2002 mm; these values coincided with those found in the literature, demonstrating the technique's dependability. Conclusion: The position of brackets on digital models can be accurately replicated by indirect bonding using a dual transfer tray. 1 A) candidate in orthodontic department, faculty of dentistry, Minia university (zip code61519), Egypt. B) Assistant lecturer in orthodontics and pedodontics department, Deraya university in Minia, Egypt.
doi:10.21608/eos.2022.146611.1051 fatcat:ynb3dkfdhjbmtchzo5bik6ntpu