Efficacy of conventional and digital radiographic imaging methods for diagnosis of simulated external root resorption

Abstract

This in vitro study evaluated and compared the efficacy of conventional (Kodak F-speed (Insight), Kodak) and a digital (DRS Gnatus System, Gnatus) radiographic imaging for diagnosis of simulated external root resorption cavities. Human mandibles containing teeth were covered with bovine muscle slices in order to simulate the soft tissues. Nine teeth out of each group of teeth were investigated. Initially, three periapical radiographs of each tooth were taken using a tube shift technique with mesial and distal angulations in both methods. All teeth were subsequently extracted and had 0.7 and 1.0-mm deep cavities prepared on their buccal, mesial and distal surfaces at the cervical, middle and apical thirds. Steel cylinder burs (DORMER® - HSS) with 0.7 and 1.0-mm diameter were used. Each tooth was replaced on its socket and new radiographs were taken. Three examiners, an endodontist (1), a radiologist (2) and a general dentist (3), evaluated the images. Results were compared by z-test and showed a higher number of cavities detected by the digital method compared to the conventional, regardless of the deepness of the cavity. In decreasing order, examiners 2, 3 and 1 exhibited different potentials of detection of cavities with the conventional method. Examiners 1 and 3 exhibited superior potential than examiner 2 for detection of cavities of different sizes with the digital method.

Evaluation and comparison of root resorption between tooth-borne and tooth-tissue borne rapid maxillary expansion appliances: A CBCT study

“…9,10 When considering root resorption in orthodontics, we must realize that resorption cavities can arise anywhere along the root surface without decreasing root length. 11 Several studies have evaluated orthodontic and biologic factors related to root resorption using 2-D periapical radiographs, 12 digital radiographs, 13 panoramic radiographs, 14 and lateral cephalometric radiographs. 15 Three-dimensional methods such as SEM, serial sectioning, and micro CT have several advantages; however, the need to extract teeth before evaluation and data loss during tooth preparation and high radiation exposure with micro CT are disadvantages of the methods.…”

Reabsorção Radicular Apical – Relato de Caso Clínico

“…Acompanhamento radiográfico se tivesse sido realizado a cada 6 meses, poderia ter possibilitado o diagnóstico precoce das reabsorções radiculares e norteado a terapia ortodôntica 27 .…”

“…A reabsorção radicular pode ser detectada nos primeiros passos do tratamento ortodôntico 2 . A reabsorção da raiz é uma condição clínica assintomática, diagnosticada por exames radiográficos 27 . As possibilidades de tratamento dos dentes afetados tornam-se mínimas quando o diagnóstico é tardio.…”

Comparison between two tomographic sections in the diagnosis of external root resorption

“…Conventional and digital radiographs have limitations for the accurate diagnosis of external root resorptions, specially when manifested as small defects located on the buccal or lingual surfaces 1,3,5,9,13,15 . Silveira, et al 13 (2003) used a dental CT with images of axial sections and revealed that it enhanced the capacity to diagnose simulated tooth resorption, as compared to conventional radiographs.…”