http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
최병철 ( Choi¸ Byung-cheol ),이상수 ( Lee¸ Sang-soo ) 한국건축시공학회 2021 한국건축시공학회 학술발표대회 논문집 Vol.21 No.2
In order to reduce the emission of harmful substances that degrade indoor air quality, the Ministry of Environment strengthened the standards for the content of VOCs in paints to supply and sell eco-friendly paints. In this related study, an eco-friendly paint mixed with a powder-type absorbent material was prepared and its characteristics were reviewed. As the amount of powder-type absorbent material increased, the workability (viscosity, peeling, etc) decreased. Accordingly, this study aims to examine which particle size is suitable according to the particle size of the granular adsorbent while improving the problem of the powdery adsorbent by using the granular adsorbent. As an experimental plan, the particle size of granular activated clay is selected to be 0.250, 0.425, 0.710(mm), and the decrease rate of VOCs concentration and impact resistance are reviewed. As a result of the experiment, as the particle size of the granular activated clay increased, the decrease rate of the VOCs concentration increased and the impact resistance improved. Therefore, considering the problems that occur after actual painting, the particle size of granular activated clay of 0.425mm is suitable.
안면 비대칭을 동반한 골격성 III급 부정교합 환자에서 Microimplant를 이용한 편악 수술교정 치료
오병철(Byungcheol Oh) 대한치과교정학회 2023 대한치과교정학회 임상저널 Vol.13 No.4
For the correction of facial asymmetry in adult patients, clinicians usually consider two-jaw surgery. However, facial asym-metry can be effectively corrected with mandibular surgery alone by using microimplants to improve maxillary canting. A 20-year-old man visited our clinic with complaints of facial asymmetry and mandibular protrusion. He exhibited severe menton deviation, anterior openbite, anterior crossbite, and occlusal canting. Due to skeletal discrepancies, his anterior and posterior teeth were compensated. In preparation for orthognathic surgery, decompensation was carried out using microim-plants. After 15 months of presurgical orthodontic treatment, decompensation was successfully completed. Bilateral sagittal split ramus osteotomy (BSSRO) was performed to correct the skeletal discrepancies. Following the surgery, intermaxillary elastics were utilized on the microimplants to correct any surgical errors. After 25 months, the treatment was concluded, re-sulting in facial symmetry and good occlusion.
턱관절 질환을 동반한 성인 비대칭 III급 부정교합 환자에서 마이크로 임플랜트를 이용한 치험례
오병철(Byungcheol Oh) 대한치과교정학회 2021 대한치과교정학회 임상저널 Vol.11 No.3
In adult patient with temporomandibular disease (TMD), precise diagnosis is needed before starting active orthodontic treatment. In some cases, patients with TMD also have centric relation (CR)-maximum intercuspation (MI) discrepancy. A 27-year, 1 month-old male patient had been referred due to malocclusion. He had TMD and CR-MI discrepancy. Anterior and posterior crossbite, facial asymmetry and midline deviation were also presented. The patient had Class III molar relationship on the right side, Class I molar relationship on the left side. Before active orthodontic treatment, centric occlusion (CO)-MI discrepancy was corrected using precision lingual arch to increase the intermolar width. Molar relationship and midline deviation were improved by distalizing the right side of the mandibular dentition. After treatment, his TMD was relieved, and the occlusion was improved.