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유지관리기 치주환자의 전치 및 소구치에서 잔존 치조골량에 따른 교합력의 비교 연구
송규원,임성빈,정진형,Song, Gyu-Won,Yim, Sung-Bin,Chung, Chin-Hyung 대한치주과학회 2002 Journal of Periodontal & Implant Science Vol.32 No.3
Periodontal supporting tissue goes through destruction by chronic inflammatory periodontal disease as two aspect. One is qualitive aspect such as alteration of periodontium, the other is quantitative aspect such as alveolar bone loss. According to many authors, PDL is responsible for biting force, and there are two mean. for measuring PDL's function - mobility test and biting force test. This study was conducted to compare the biting force with remaining bone level, that is, quantitative aspect of periodontium, in anterior and premolar teeth at periodontal maintenance phase. 17 patients on periodontal maintenance phase during 6 months at minimum were selected for this study. For the same condition, 4 anterior, canine, premolar teeth were tested by MPM-3000 bite-force register at the same time(a.m.l0-12), the same position, the same posture, by the same examiner. Patients of TMI), ill-fitting pros thesis, general disease, malocclusion and the teeth of TFO, absence of opposing teeth, malposition were excluded. Remaining bone level was measured on the panorama X-ray film through 5 level from 1mm below CEJ to root apex. Teeth were examined twice, and bigger one was selected. If the values showed large difference. examinatin was re-done and the mean was selected. The results were as follows ; 1. In the 4 anterior group, as the remaining bone is decreased, the average of maximal biting force is decreased. Especially, at 3/5 bone level, maximal biting force is decreased significantly(p<0.01). 2. In the canine group, as the remaining bone is decreased, the average of maximal biting force is decreased. Especially, at 2/5 bone level, maximal biting force is decreased significantly(p<0.01). 3. In the premolar group, as the remaining bone is decreased, the average of maximal biting force is decreased. Especially, at 3/5 bone level, maximal biting force is decreased significantly(p<0.05). From the results of this study, clinicians could utilize these efficiently when they have to determine the proper restorative materials, time for tooth extraction, treatment plan, prognosis.
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시각 장애인을 위한 착용형 보조 장치의 새로운 디자인 설계
이정현(Jeong-Hyeon Lee),오재희(Jae-Hee Oh),차현준(Hyeon-Jun Cha),허준영(Jun-Young Heo),송규원(Gyu-Won Song),이승환(Seung-Hwan Lee) 한국정보기술학회 2021 Proceedings of KIIT Conference Vol.2021 No.11
본 논문에서는 시각장애인의 안정적인 보행을 보조하기 위한 착용형 장치의 새로운 디자인 설계를 제안한다. 착용형 보행 보조 장치는 LiDAR, IMU, 진동모터 및 임베디드 보드로 구성되어있다. LiDAR는 시각장애인 주변의 클라우드 포인트를 검출하였고, 이를 토대로 장애물 탐지를 수행하기 위해 ROS Obstacle Detector Package가 이용되었다. 탐지된 장애물 정보는 진동모터를 통해 시각장애인에게 표현/전달되고, 시각장애인은 이를 이용하여 다가오는 물체를 회피하여 안정적으로 보행할 수 있게 된다. 현재 모듈 단위로 구현 및 테스트를 진행하고 있으며, 향후 설계가 완료된 후, 실제 시각장애인을 대상으로 실험을 진행할 예정이다. In this study, we propose a new design of wearable walking assistive device for the blind. The wearable walking assistive device is composed of LiDAR, IMU, vibration motor and an embedded board. LiDAR detects point cloud around the blind and ROS Obstacle Detector Package is performed using it. The detected obstacle information is expressed/transmitted to the blind through the vibration motor, and finally the blind can walk stably by avoiding approaching objects. Currently, we are implementing and testing modules of the wearable assistive device. In future work, we plan to conduct experiments practically for the blind.
ScienceON
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