Comparison of two cone beam computed tomographic systems versus panoramic imaging for localization of impacted maxillary canines and detection of root resorption

Abstract

The diagnostic accuracy for the localization of impacted canines and the detection of canine-induced root resorption of maxillary incisors were compared between conventional radiographic procedures using one two-dimensional (2D) panoramic radiograph with that of two three-dimensional (3D) cone beam computed tomography (CBCT) scans. The clinical records of 60 consecutive patients who had impacted or ectopically erupting maxillary canines were identified from those seeking orthodontic treatment. For each case, two sets of radiographic information were obtained. The study sample was divided into two groups: group A (n = 30) included those for whom a dental pantomograph (DPT) and CBCT obtained with a 3D Accuitomo-XYZ Slice View Tomograph were available and group B (n = 30) who had a DPT and CBCT obtained with a Scanora. The DPT and CBCT images were subsequently analysed by 11 examiners. Statistical analysis included an evaluation of the agreement between observers based on the standard error of the measurement, kappa statistics and coefficient of concordance, as well as an assessment of the differences between 2D and 3D imaging employing Wilcoxon signed rank and McNemar tests. There was a highly significant difference between the 2D and 3D images in the width of the canine crown (P < 0.001) and in canine angulation to the occlusal plane. Moreover, there was a highly significant difference between the DPT and Scanora CBCT images in canine angulation to the midline (P < 0.001). There was also a significant difference between 2D and 3D images with respect to canine location (P = 0.0074 for group A and P = 0.0008 for group B). The presence or absence of root resorption of the lateral incisor was also significantly different in both groups (P = 0.0201 and P < 0.001 for groups A and B, respectively). Detection of central incisor root resorption was significantly different between the Accuitomo and DPT images (P = 0.045). There was also a significant difference in the severity of lateral incisor root resorption between the DPT and CBCT in both groups (P = 0.02). The results of this study suggest that CBCT is more sensitive than conventional radiography for both canine localization and identification of root resorption of adjacent teeth.

Penyerapan Akar Gigi Apeks Luaran Hasil Rawatan Ortodontik Pada Enam dan 12 Bulan

“…Perkembangan CBCT menghasilkan imej tanpa herotan serta mempunyai resolusi yang tinggi (Lund et al 2010) serta dos radiasi yang rendah berbanding CT (Tsiklakis et al 2005) dan tidak terlalu mahal. Oleh itu, CBCT telah mula digunakan bagi mengkaji penyerapan akar gigi (Alqerban et al 2011;Lund et al 2010;Yu et al 2012 Kriteria penglibatan dan penyingkiran digunakan untuk memilih subjek yang sesuai untuk diambil sebagai sampel kajian (Jadual 1). Trauma pada gigi insisor maksila setiap subjek dipertimbangkan berdasarkan sejarah individu, ujian klinikal dan radiograf periapeks.…”

Diagnostic Value of Panoramic Radiography in Determining the Position of Impacted Permanent Maxillary Canines

“…Maxillary canines are the most frequently impacted teeth after third molars (1)(2)(3)(4)(5). Disturbed development of permanent maxillary canines is common due to having the longest development period, the most superior position of development and the most difficult developmental path (6)(7)(8)(9).…”

Comparison of panoramic radiography and cone-beam computed tomography for qualitative and quantitative measurements regarding localization of permanent impacted maxillary canines

“…Previous studies used magnification methods 6,20,21 and CII 9,15,16 calculations to determine the bucco-palatal positions of IPMCs in panoramic radiographs. Chaushu et al 16 confirmed that localization of the bucco-palatal the same study, root resorption was observed in 13% of permanent central incisors on panoramic radiography and 15.1% on CBCT.…”

“…4 In recent years, cone-beam computed tomography (CBCT) systems for acquiring 3D images of oral structures have been preferred due to their relatively low cost and low radiation dose. 6 Several studies have examined the localization of IPMCs for various populations, such as 14 To the best of our knowledge, however, no such studies have been conducted for the Turkish population.…”

“…Criteria used in various previous studies were modified to assess DPR and CBCT images of IPMCs. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15] The amount of magnification, which was determined by the manufacturer (×1.3), was taken into account in the measurements of DPR images. Morphology of the adjacent PLI, contact relationship between the IPMC and the adjacent PLI, presence of root resorption in the adjacent PLI, and angle measurements were evaluated in DPR images and in the coronal and sagittal sections of CBCT images ( Table 1).…”