Root-contact evaluation by panoramic radiography and cone-beam computed tomography of super-high resolution

Comparison of root resorption between self-ligating and conventional preadjusted brackets using cone beam computed tomography

“…5,13,18 Despite the changes in teeth position due to orthodontic treatment, 8,18 CBCT scans produce a high level of reproducibility, which reasserts its use in orthodontics. 5,17,18 In order to evaluate root length, an in vitro CBCT precision study was performed. Measurement differences ranged from 0.07 to 0.26 mm and occurred because anatomic differences were not considered clinically significant.…”

“…13 Computed tomography scans have been regarded as the most precise tool in detecting root resorption. 5,13,[15][16][17][18] Therefore, conebeam computed tomography (CBCT) images showing root resorption may influence orthodontists in either continuing or modifying the treatment plan as needed. 15 The purpose of this prospective study was to compare the magnitude of EARR incisors in patients undergoing the initial phase of orthodontic treatment, with self-ligating and conventional brackets.…”

Cone beam computed tomography use in orthodontics

“…Thus, significant effort has been devoted to comparing diagnostic and outcomes measurements taken from CBCT images against measurements taken from conventional 2-D radiographs. There is widespread agreement that CBCT images are better than conventional 2-D lateral cephalographs, 2-10 posterior-anterior cephalographs 11 and panoramic radiographs 12 for landmark identification and measurement accuracy. Only three studies did not validate CBCT image superiority over 2-D lateral cephalograph.…”

“…36 Overall, root lengths measured from CBCT images are more accurate than those taken from 2-D images. 12,33,35,[37][38][39][40] EARR studies not only provide valuable clinical information, but several of these studies have tested the accuracy and reliability of measurements taken on different CBCT machines and at different image resolutions, which can vary considerably 33,38,41 or at different voxel sizes. 37,39 Image resolution can be quite different between CBCT machines depending on the sensor used, with relatively low-resolution, largevolume images being generated on 12'' sensors (e.g.…”

“…Some authors suggest that CBCT should be utilized infrequently and only in cases where conventional 2-D imaging will clearly not suffice. 12,49,91 The British Orthodontic Society (BOS) has updated its guidelines for clinical radiology to emphasize the invasiveness of any radiograph and the need for sound clinical judgment when prescribing diagnostic radiographs. 92 Importantly, the BOS guidelines make it clear that there are no criteria for taking routine radiographs, including CBCT scans, in orthodontics patients.…”