Radiographic assessment of simulated root resorption cavities

Abstract

A study into the sensitivity and accuracy of a standardized radiographic technique for the disclosure of root resorption cavities was performed in a cadaver material. Film contrast and horizontal angulation were varied in order to identify factors in radiographic exposure which resulted in the greatest diagnostic reliability. In an autopsy material of 5 jaw blocks containing both mandibular premolars, “small, medium and large” cavities simulating root resorptions of 0.6, 1.2 and 1.8 mm in diameter and 0.3, 0.6 and 0.9 mm in depth, respectively, were drilled at the cervical, middle and apical thirds of the proximal and oral root surfaces of the premolars. Cavity locations were distributed to ensure an equal number of locations with and without cavities and an equal number of cavities of each size. Results of the investigation indicated that the small cavities were never visualized, nor were 6 out of 13 medium cavities nor 1 out of 13 large cavities; that cavities located proximally were more readily seen than those located orally and that there was no clif Terence in cavity visualization between cavities on the apical, middle or cervical thirds of the roots; high density (contrast) films allowed the best cavity visualization. Finally, radiographs from the time of injury (i.e. preresorption radiographs) as well as radiographs taken at various horizontal angulations were found to be of importance in order to increase the possibility of cavity visualization.

Tooth discolouration and staining: a review of the literature

“…8). 40 13. Ageing: The natural laying down of secondary dentine affects the light-transmitting properties of teeth resulting in a gradual darkening of teeth with age.…”

Cone-beam computed tomography versus periapical radiograph for diagnosing external root resorption: A systematic review and meta-analysis

“…After that, the full texts of the reserved 31 citations were obtained and evaluated per the inclusion criteria. Finally, 15 studies were included in the systematic review [17][18][19][20][21][22][23][24][25][26][27][28][29][30][31] ( Figure 1). Among the enrolled studies, nine studies reported the diagnos- tic efficacy of CBCT with a sample size of 1097 suspected ERR sites, and 11 reported information of PR with a sample size of 1072 sites (five studies focused on both modalities).…”

The Effect of Two Different Voxel Sizes on the Diagnosis of External Root Resorption by Planmeca Cone Beam Computed Tomography System: an in vitro study

“…In the dental literature, the insufficient accuracy of conventional radiography methods in detecting root lesions such as small resorptive lesions on the buccal and lingual surfaces is well-documented [6][7][8]12]. This has led investigators to look for other techniques that will diagnose external root resorption lesions.…”

“…It is well known that lesions with a diameter under 0.6 mm and a depth under 0.3 mm cannot be identified by conventional periapical radiography and thus external root resorptionre mains undiagnosed and is allowed to progress [6,7]. Lesions that occur on the buccal or lingual surfaces of the tooth pose a major diagnostic problem in conventional radiology [8].…”