CBCT Evaluation of the Severity of Maxillary Impacted Canines Using the KPG Index

Olteanu, Cristian; Ganea, Ioana; Pop, Andreea; Lucaciu, Ondine; Ţărmure, Viorica; Ionescu, Ecaterina; Teodorescu, Elina; Chibelean, Manuela; Bud, Eugen; Păcurar, Mariana

doi:10.37358/rc.18.6.6346

Cited by 1 publication

(2 citation statements)

References 9 publications

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“…For the KPG index, all our cases were scored 0 regarding the vertical position of the root tip that was situated at a much higher position than the estimated categories. Furthermore, the authors recommend the use of a properly selected sagittal cut for both the cusp and root tips instead of the axial cut applied in various previous studies 15,16,30,31 as the proposed method is much more accurate particularly in different impaction positions. At the same direction, Uday et al 2014 concluded that the CBCT axial view was much reliable compared to sagittal and other views specifying that this depends mainly on the type of impaction.…”

Section: Discussionmentioning

confidence: 99%

“…They definitely lack the contribution of other dental specialties as radiologists, surgeons and even general practitioners, as well as the comparison with a more objective gold standard which is the actual treatment duration and protocol applied for each case with all faced difficulties. These recommendations were approved by other previous studies 30,31,33 .…”

Section: Discussionmentioning

confidence: 99%

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Radiographic assessment of impacted maxillary canine position using CBCT: A comparative study of 2 methods

Beshlawy

Dina²

2019

Egyptian Dental Journal

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Objectives: The aim of this study was to compare and evaluate the guidelines proposed by Counihan et al 2013 and the KPG index method for assessment of maxillary impacted canine position using CBCT images from a radiographic point of view. Subjects & methods: Thirty-six CBCT scans of 36 patients (6 males and 30 females), with a total number of 45 impacted maxillary canines, were recruited from the database of the Oral and Maxillofacial Radiology Department, Faculty of Dentistry, Cairo University. KPG index, for each impacted canine, was calculated by giving both its cusp and root tips a score on a 0-5 scale along the x, y, and z planes. The summation of these six scores would predict the treatment difficulty, classified as easy (0-9), moderate (10-14), difficult (15-19), and extremely difficult (20 and above). Moreover, Counihan et al 2013 guidelines were applied on each studied impacted tooth in which the tooth position in four categories was considered: overlap with adjacent incisor, vertical height, angulation to midline and position of root apex. For each category, either good, average or poor prognostic outcome was selected. Data were collected and statistically analyzed. Results Upon comparing both studied methods of radiographic assessment of impacted maxillary canines, a statistically significant difference was found: KPG index categorized more cases (9 cases) as easy (20%) while Counihan et al guidelines categorized only 2 cases (4.4%) as having good prognosis. Similarly, KPG index categorized more cases (15 cases) as moderate (33.3%) while Counihan et al guidelines categorized 13 cases (28.9%) as having average prognosis. On the other hand, Counihan et al guidelines categorized more cases (30 cases) as poor prognosis (66.7%) while KPG index categorized only 21 cases (46.7%) as being difficult. Nonetheless, on comparing the treatment difficulty and prognosis of impacted maxillary canines found on the right and left sides, unilaterally or bilaterally, in males and females, a non-statistically significant difference was found using both methods of radiographic assessment. Conclusion From a radiographic point of view, the KPG index, with some minute modifications, has demonstrated to be an effective and competent method for classification of maxillary impacted canine's treatment difficulty in accordance to their position, as compared to the guidelines proposed by Counihan et al at 2013.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%