Diagnostic accuracy of endoscopy for the detection of isthmuses of mandibular molar teeth using micro-CT as reference

Abstract

The aim of this study was to evaluate the efficacy of endoscopic visualisation to detect the presence and type of isthmuses within the mesial root canals of mandibular first molar teeth compared with micro-computed tomography (micro-CT) images as reference. Materials and Methods Thirty-two mesial roots of mandibular first molars presenting isthmuses were selected based on micro-CT scans. In all, 12 type I and 20 band-shaped isthmuses were collected. The specimens were mounted in the posterior socket of dental phantom manikin for endoscopic visualisation. The ability of endoscopes to visualize the presence of isthmuses and distinguish the type of isthmuses was compared. Micro-CT images of the specimens were used as references. Data were analyzed using Fisher's exact tests. Results Sensitivity of endoscope to detect isthmuses were also calculated for each isthmus type. In 37.5% of the samples, isthmus presence was correctly diagnosed via orthograde endoscopic visualization. Type I istmuses were significantly more detected than band-shaped isthmuses (P<0.05). Endoscope showed higher sensitivity to detect type I isthmus than band-shaped isthmus. Conclusion The endodontic endoscope could detect type I isthmuses more accurately than band-shaped isthmuses.

Mutation Detection and Functional Analysis of MSX1, PAX9, AXIN2, and BMP in Nonsyndromic Congenital Missing Teeth Based on Intelligent Image Detection

“…Taking horizontal mirroring as an example, if the height and width of an image are known as ðlHeight, lWidthÞ, set the coordinates of a point in the image to be ðx0, y0Þ, and after horizontal mirroring, the coordinates of this point will become ðlWidth − x0, y0Þ, which can be expressed as follows: To realize the mirror image of the whole image, all the points in the image need to be calculated. Similarly, the realization of vertical mirroring is to change the coordinates of all points ðx0, y0Þ to ðx0, lHeight − y0Þ [14].…”

A computational modeling method for root canal endoscopy using a specific CBCT filter: A new era in the metaverse of endodontics begins

“…Several studies have investigated the internal morphology of root canals (7)(8)(9)(10)18,20,35) and the potential for new advances including the application of CBCT (6)(7)(8)(9)(10)35,36). There have also been attempts to find alternatives to a tool that would act as an endoscope inside the root canal.…”

“…The efficacy of endoscopic visualization to detect the presence and type of isthmuses inside the mesial root canals of mandibular first molars has been recently evaluated and compared with microcomputed tomography (micro-CT) images as a reference (20). Thirty-two mesial roots of mandibular first molars with isthmuses were selected on micro-CT scans.…”