[논문]Augmented Reality Technology-based Dental Radiography Simulator for Preclinical Training and Education on Dental Anatomy

Gu, Ja-Young; Lee, Jae-Gi

doi:10.6109/jicce.2019.17.4.274

Augmented Reality Technology-based Dental Radiography Simulator for Preclinical Training and Education on Dental Anatomy 원문보기

Journal of information and communication convergence engineering, v.17 no.4, 2019년, pp.274 - 278

Gu, Ja-Young (Department of Dental Hygiene, Sahmyook Health University) , Lee, Jae-Gi (Department of Dental Hygiene, Namseoul University)

Abstract ▼ AI-Helper

It is important that students are provided opportunities to practice their skills in acquiring radiographic images. However, these opportunities are currently limited because of the risk of radiation exposure. To overcome this limitation, a new augmented reality-based radiography simulator was developed that enables students to practice radiographic techniques as part of self-directed learning without time and space constraints. Subsequently, cross-sectional images of a manikin phantom head obtained via computed tomography were reconstructed into a three-dimensional object. An image marker that could be recognized by a mobile device and could allow users to practice dental radiography techniques was devised. The three-dimensional object was augmented to the mobile device; consequently, among 106 stored dental radiographs on the device, a radiograph corresponding to specific imaging conditions was opened when users performed radiographic procedures. This technology could improve dental students' understanding of dental anatomy and contribute to improving their competency in acquiring dental radiographs.

주제어

표/그림 (3)

그림 Fig. 1. Utilization of the dental radiography simulator-based augmented reality system installed on a mobile device (a, preparation of radiography by touching the target teeth to be imaged; b, simulation of radiography on the image marker).
그림 Fig. 2. Three-dimensional models of skull (a) and the teeth (b) on the display screen of the dental radiography simulator-based augmented reality system (A–G, executable icons by touching on the graphical user interface; A, the tooth selection icon for simulation of radiography; B, the icon to show or remove the skin by touching; C, the executable icon for identification of the anatomic structures of the skull and teeth by touching; D; the icon to show only the morphologic structure of the teeth; E, information about camera angle for teeth that appears in radiographic simulation when the ‘A’ icon is touched; F1, identification of skull anatomy that appears after touching the ‘C’ icon; F2, identification of teeth structure using a three-dimensional model of the maxillary and mandibular teeth when the ‘D’ icon was executed; G, for execution of the command in the previous step).
그림 Fig. 3. Outcomes of radiographic simulation by the dental radiography simulator-based augmented reality system (a, display of radiographic image in a clinical setting; b, display of a radiographic image of the manikin phantom head; white circle, range of teeth to be imaged; light blue rectangle, a superior view of the three-dimensional arrow, in which the smaller inner rectangle and the larger rectangle represent the pillar and the head of the arrow, respectively. This shows the vertical and horizontal positions of the mobile device in real time).

AI 본문요약
AI-Helper

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문제 정의

Therefore, the aims of the present study were to develop an AR technology-based simulator that overcomes limitations, such as radiation exposure and the need for an expensive MPH, and that provides students with ongoing opportunities in acquiring skills associated with dental radiography during their preclinical years and in improving their understanding of oral anatomy with the help of dental radiography simulator-based augmented reality (DRS-AR) technology.

제안 방법

org). The 3DO image was then created by making some modifications to the images to enable the student to observe the morphology of the maxillary and mandibular teeth in more detail.
The positions of the teeth were also recorded on clinical intraoral radiographs to allow users to experience simulations of various clinical cases. The gyro sensor of the MD evaluated the positions of the head tube of the dental radiographic device that was used to record the horizontal and vertical angles. The DRS-AR technology can also display radiographs if the position values that are saved on the radiographs correspond to those recorded by the gyro sensor of the MD.
For radiographic simulation, the system is configured to execute the graphical user interface of the MD when the student touches the screen in a stepwise manner, which allows the student to practice the bisecting and bite-wing techniques and provides them with an opportunity to learn the anatomic structure of both the skull and maxillary and mandibular teeth via the MPH. The system was designed using an application program interface whereby users are alerted when radiographic errors occur owing to incorrect imaging positions during the simulation of radiographic procedures with DRS-AR, thereby enabling them to excel in performing radiographic techniques correctly and efficiently.

대상 데이터

When the DRS-AR application was opened, the IM was recognized by the MD camera, and the 3DO representing the MPH that was saved in the MD was displayed on the screen. The MDs used were either the Galaxy Note 4 or S8 (Samsung, Korea). The following were the specifications of the MD camera that was used as the image sensor: Sony IMX BSI COMS (aperture F/2.

후속연구

At present, this application is only available for iOS users, but it should be available for Android users in the future. Future research should involve a pre-and post-evaluation of the skills of students who have worked on the application in both Android and iOS devices. Additionally, the incorporation of the DRS-AR technology into dental radiography procedures would improve the clinical competency of students.

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