• Journal of dental hygiene science
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• v.11 no.3
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• pp.155-161
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• 2011

The purpose of this study was to obtain data necessary for guiding students in the future by grasping which rate of error is made how much depending on a shooting technique in the filming of periapical radiograph. 14,402 films, which were instructed targeting students for the Department of Dental Hygiene at D Health College and S Health College, were analyzed. The following results were obtained by conducting questionnaire survey targeting 263 students who completed the shooting practice lesson of bisecting angle technique and paralleling technique. 1. In case of having shot with bisecting angle technique, the ratio of error was the highest in both maxillary and mandibular first molar. 2. In case of having shot with paralleling technique, the ratio of error was the highest in the maxillary bicuspid and the mandibular first molar. 3. As for ratio of error in light of a shooting technique, both bisecting angle technique and paralleling technique were indicated to be the highest in inaccuracy of film position. The bisecting angle technique was indicated to have the higher ratio of error compared to the paralleling technique. 4. As for ratio of error in light of the processing technique, both bisecting angle technique and paralleling technique were indicated to be the highest in dark image and light image. The bisecting angle technique was indicated to have the higher ratio of error compared to the paralleling technique. 5. Students were indicated to feel it to be most difficult for grasping the processing level in the film-developing process. As the above results, to reduce ratio of error given the periapical radiography, a method of reducing ratio of error given the periapical radiography is considered to be what correctly understands the morphological and anatomical structure inside the mouth and what acquires the shooting technique by filming several times with having enough time.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2018.05a
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• pp.156-157
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• 2018

의료분야에서 원격판독은 보편화되어 있다. 하지만 이러한 원격판독에 필요한 전송과 관리 시스템은 부족하다. 본 논문에서는 가정용 카메라 모듈을 구성하고 이를 통해 모바일 애플리케이션으로 영상 스트리밍 및 사진 촬영을 하여 촬영된 사진을 치과로 전송하고 원격으로 검진할 수 있는 카메라 모듈 및 애플리케이션의 영상 전송을 위한 방법론을 제시한다. 안드로이드 애플리케이션과 카메라 모듈의 스트리밍 과정에는 여러 가지 문제가 발생한다. 모듈에서의 촬영 영상과 애플리케이션의 스트리밍 영상 간의 딜레이가 존재하는 것과 스트리밍 도중에 영상이 검은 화면으로 나왔다가 다시 돌아오거나 화절 저하 현상이 일어나는 것이다. 이러한 문제점들을 개선하고 최적화 할 수 있도록 한다.

• The Journal of the Korea Contents Association
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• v.13 no.8
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• pp.258-265
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• 2013

This study was designed to investigate the correlation between the degree of knowledge in regards to the importance of oral health and the smile scores as well as the correlation between their actual oral conditions and smile scores. The author surveyed the knowledge and the actual oral health condition of the subjects, 150 high school students (80 males and 70 females), and their frontal pictures were taken when they had full smiles. After evaluation of the smiles of the subjects by five dentists, the results were analysed. This study showed that there was neither a correlation between the smile score and the knowledge of oral health nor the actual oral condition. The investigation showed that the actual oral condition and care was performed well even if there were some wrong answers in the questionnaire, which asked about proper oral health. In conclusion, the smile could be related to the repetition of the habit of smiling rather than being related to the knowledge of oral health or their actual oral condition.

• Journal of radiological science and technology
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• v.33 no.1
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• pp.1-10
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• 2010

Dental panoramic radiography is an imaging technique which shows the information of teeth, jaws and superficial structures on a single image. In this study, we propose the clinical dose reference for dental panoramic radiography. Dental panoramic radiography is an application which can increase the radiation does of oral cavity. It is very important to study the real condition of management for these panoramic X-ray equipments. Since there was no researches on dental panoramic equipments in domestic and foreign study groups, we measured and analyzed the dose such as effective dose, DAP and DWP of panoramic radiography.

• Journal of Oral Medicine and Pain
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• v.34 no.1
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• pp.81-90
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• 2009

This study is designed to assess Relationship between clinical diagnosis of Temporomandibular Joint Disorder and diagnostic finding of Cone Beam Computed Tomography(CBCT) The author performed clinical examination for TMD Patients who visited Orofacial pain clinic, Jin-ju ooo Dental office. CBCT(Cone beam computed tomography) was taken for 190 joints in 95 subjects. A Oral medicine and Oral radiologist evaluated CBCT each other. then we compared with that result, Condyle bony changes were classified by no bone change, flattening, erosion and osteophyte. The obtained results were as follow: 1. The Kappa index of the diagnosis between oral medicine and oral radiogist were high, the index of diagnosis by degenerative joint disease were more higher. 2. The Kappa index of panoramic view and CBCT was low, more condylar bone chages were observed by CBCT diagnosis 3. Condylar bone changes of the 54.2% of non-DJD group clinicaly was observed by CBCT diagnosis and no bone changes of the 15.3% of DJD group.was observed by CBCT 4. TMJ pain was associated with erosion of condyle bone change of TMJ. Crepitation and longest duration of TMD were associated with osteophytic bone change.

• Journal of the korean academy of Pediatric Dentistry
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• v.49 no.1
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• pp.57-64
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• 2022

Additional dentition images are needed because the dentitions are distorted in cone-beam computed tomography (CBCT) due to streak artifacts and non-uniformity of the x-ray beam. The purpose of this study is to evaluate the feasibility of improving the dentition image of CBCT scan with intraoral scanner instead of plaster models. Maxilla images from plaster models, two intraoral scanners, and CBCT of 20 patients aged 12 to 18 were used in this study. With one of the intraoral scanners, the full arch was scanned by three segments and combined into a complete full arch. Virtual skull-dentition hybrid images from intraoral scanners were superimposed with the images from plaster models to evaluate the coordinate value difference and distance at reference points. The results showed that the coordinate value difference and distance were smallest with segmented intraoral scan, which showed only 2 ㎛ distance. Intraoral scan may provide good dentition images for virtual skull-dentition images.

• Journal of dental hygiene science
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• v.4 no.3
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• pp.97-102
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• 2004

In order to find out the rate of error according to intraoral standard radiographic techniques, this study analyzed 3,251 standard films, and conducted a questionnaire with 120 Daegu Health College students who have used the bisecting angle technique and the paralleling technique. Followed are the results of the study: 1. The rate of error was the highest in canine from both maxilla and mandible when used by the bisecting angle technique. 2. The rate of error was the highest in premolar from both maxilla and mandible when used by the paralleling technique. 3. The technical error was occurred most frequently in elongation. 4. The rate of error and distortion was higher in the bisecting angle technique than in the paralleling technique. 5. The processing error was occurred most frequently in light film. 6. In applying radiographic techniques, the subjects indicated that the vertical angulation of central radiation in the bisecting angle technique and the oral fixation of film holder in the paralleling technique were the most difficult.

• Journal of dental hygiene science
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• v.5 no.4
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• pp.221-225
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• 2005

In this study, survey is conducted to make aware of importance which personal protection was accomplished at the dentistry. It investigated the performance of infection control and X-ray safety management to the third grade of D-Health College. 1. The infection control is recognized to high level and practiced certainly at actual training of oral prophylaxis. 2. The infection control is recognized to low level relatively at actual training of radiography. 3. The infection control is not practiced at actual training of radiography except for the film holder. 4. The X-ray safety management is recognized to high level and conducted certainly at actual training of radiography. To consider the above result, the infection control is not nearly practiced at radiography. In accordance with, the education must be demanded that the infection control is practiced throughly at radiography for raising a necessary against the recognization and practice of the infection control.

• The Journal of the Korea Contents Association
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• v.12 no.1
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• pp.379-385
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• 2012

The purpose of this study is to propose that co-working plan with patient information service system for dental clinic and dental lab using smart phone system which is recently spread to. For this purpose, we introduced latest mobile S/W development environment. And design key features of patient information service system based on mobile platform(Android) by user interface design. In fact, we have applied this system(mobile system) to dental clinic and dental lab, we have following results: 1.There were significant possibility in dental utilization of smart phone based on latest ICT(Information & Communication Technology) technology. 2. Improve conventional method of image upload by connecting digital camera to the server computer using USB port. 3. Reduce error of image management by direct upload to server computer from smart phone. 4. Improve process of making prosthetic appliance by displaying dental image on smart phone in dental lab.

• Journal of Oral Medicine and Pain
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• v.31 no.2
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• pp.147-154
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• 2006

This paper studies natural head position and orofacial pain. For this study. 27 persons with dental service were selected, we examine head & neck pain, factor affecting pain severity, stress, stressful facial symptom with questionarre and interview. We have photograph for natural head position in front of 5cm posture scale pate. Data obtained were statistically processed by the SPSS Windows program and the results of this study were as follows: 1. There were significant difference from plum line to acromion line, from plum line to tragus line, eye- tragus angle, SCM angle. 2. Between group with head and neck pain and group without head and neck pain, the study shows no significant difference on average NHP measurement and NHP amount. 3. Between group with head and neck pain and group without head and neck pain, the study shows no significant difference on SRRS. 4. In this paper we indicate more stressful symptom in group with head and neck pain than group without head and neck pain. 5. There have no difference in head and neck pain level according to hobby.