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전치부의 경미한 공간부조화 개선을 위한 가철성 장치의 적용 예
곽아람,최영철,박재홍,최성철,김광철 大韓小兒齒科學會 2007 大韓小兒齒科學會誌 Vol.34 No.4
골격성 부조화가 없는 I급 부정교합은 치아-악궁 간의 크기 차이에 의한 총생(crowding)이나 공극(spacing)이 주된 문제점이다. 이와 같은 경미한 공간 부조화를 개선시키고자 할 때,치열의 종류,치아-악궁크기 부조화의 양,환자의 협조도,또는 환자의 요구 등에 따라 치료 방법은 다양할 수 있다. 본 증례보고에서는 I급 구치부 관계를 지니면서 전치부의 치아-악궁크기 부조화의 양이 크지 않은 영구치열에서 상하 악 전치부의 경미한 총생이나 공극이 관찰되는 경우에 사용할 수 있는 clear aligner와 spring aligner 장치의 이용에 관하여 보고하고자 한다. 이와 같은 장치들의 임상 적용에는 몇 가지 제한적인 조건이 있기는 하지만,잘 선택된 증례에서는 매우 유용하며 편리하게 이용될 수 있다. 특히 총생이 존재하는 경우에는 이를 해소시킬 공간이 치열 내에서 확보되어야 하므로,확실한 분석과 진단으로 치아 인접면 삭제의 양을 정확히 결정하여 각 치아들의 근심면과 원심면에서의 삭제의 양이 균등히 이루어질 수 있도록 하는 것이 바람직하다. 또한 치간에 공극이 존재하는 경우에는 배열 후 치열궁 둘레의 감소와 함께 상하악 전치부 간의 over-jet 문제가 생길 수 있어 대합치열과의 교합관계에 신중을 기하여야 한다. Class I malocclusion without skeletal problem results from tooth size/arch-size discrepancies, either evidenced by crowding, or spacing problems. Treatment method can be chosen according to dentition, the amount of arch discrepancy, patient compliance, or patient demands. We report of clear aligner and spring aligner that can be applicated in cases of permanent dentition with minimal arch discrepancy in anterior segment. There are some limits of application, but these are very useful appliances in the selective case. When crowding exists, definitive analysis and diagnosis should be made before starting treatment because certain amount of space must be obtained somewhere in the dentition to resolve the crowding. Therefore, appliance should be applied when lacking space is small. Also, in cases with spacing arch circumference is reduced after alignment so no problem in intermaxilla occlusal relationship must be confirmed. In case with crowding, judicious removal of interproximal enamel is indicated.
곽아람,박재홍,최성철,김광철 大韓小兒齒科學會 2008 大韓小兒齒科學會誌 Vol.35 No.2
반대교합은 교두간섭이나 유구치의 조기상설 등에 의해 하악이 기능적인 전방위로 위치된 기능성 반대교합과 하악골의 과성장,상악골의 열성장 또는 양자가 복합된 골격성 반대교합,구치부의 관계는 1급이나 전치부의 치축경사가 조화를 이루지 못해 발생되는 치성 반대교합으로 분류된다. 1970년 Rölf Fränkel에 의해 소개된 Functional regulator(FR)의 한 종류인 FR-III는 상악의 열성장을 동반한 반대교협을 개선하기 위해 유치열기,혼합치열기,및 초기 영구치열기에 사용되고 있다. 이 장치는 비정상적인 근육력을 차단하여 구강내 치열 및 악궁에 대한 힘의 불균형 상태를 개선하고,구강주위의 근육을 훈련시켜 새로 형성된 힘의 균형에 의해 이차적으로 악안면골의 크기와 형태를 변화시킨다. 본 증례는 상악 중절치가 맹출하기 전에 미약한 상악 열성장과 전치부의 깊은 교합을 동반한 전치부 반대교합을 FR-III로 치료하여 양호한 결과를 얻었기에 이에 보고하는 바이다. In children with Class III malocclusion, it is important to identify whether the etiology is functional, dental, skeletal. FR-III developed by Rölf Fränkel in 1970, has been used during deciduous, mixed, and early permanent dentition to correct class III malocclusion characterized by maxillary skeletal retrusion. According Frankel, the vestibular shields and upper labial pads act to counteract the forces of the sur rounding musculature that restrict forward maxillary development and cause a retrusion in maxillary tooth position. This can achieve favorable developments with the basal bone. teeth and alveolar bone. We report FR-III that can be applicated in cases of early mixed dentition with mild maxillary deficiency and deepbite before the eruption of permanent maxillary incisor.
( Ah-ram Kim ),( Ho-seong Lee ) 한국체육학회 2016 국제스포츠과학 학술대회 Vol.2016 No.1
Purpose: Application of training periodization is long-term cyclic structuring of training and practice to maximize performance to coincide (Issurin, 2010), and has object to increase in countervail into homeostasis, development of multiple physical abilities, prevention of overtraining, and the regulation of conditioning (Ebben et al., 2005). Especially, application of training periodization during a winter training season is a preparatory period to ensure best records at IN term (in season). The purpose of this study were to investigate the changes in serum bone metabolism and bone density in elite softball athlete during a winter training season. Method: Twenty healthy elite softball athlete participated in the study they have been maintained the normal menstruation cycle of 25~38 days (The change every cycle was within six days). The periodization during a winter training season classified OFF term (2011. 12. 1 ~ 2012. 2. 14), PRE term (2012. 2. 15 ~ 2012. 4. 2) and IN term (2012. 4. 3 ~ 2012. 4. 29). Physical characteristic, serum bone metabolism (bone specific alkaline phosphatase; BAP, collagen carboxy-terminal telopeptide; ICTP, Ca, insulin-like growth factor-1; IGF-1, blood lactate concentration) and lumbar bone density were collected before and after OFF term, after PRE term and after IN term. Result: Weight and body fat were positively improved after OFF term (p<.05) than before OFF term. At serum bone metabolism, BAP and Ca were positively improved after OFF term (p<.05, respectively) than before OFF term, and blood lactate concentration was positively improved OFF term (p<.01) than before OFF term, and maintained continuously up to IN term. Lumbar bone density was significantly higher OFF term (p<.05) than before OFF term. Conclusion: These results suggested that softball training exercise during a winter training season improve serum bone metabolism and lumbar bone density.
Flowering and Photosynthetic Responses of Phalaenopsis under Elevated CO₂ and Nutrient Supply
Ah Ram Cho,Sun Hee Choi,Yoon Jin Kim 한국원예학회 2020 원예과학기술지 Vol.38 No.5
The demand for phalaenopsis has been increasing in areas including Thailand, Japan, and the United States. Increasing atmospheric CO₂ during the night improves the productivity and quality of phalaenopsis flowers. Because nutrient requirements change under conditions of elevated CO₂, the interactive effects of CO₂ enrichment and nutrient supply require particular attention. Our studyaimed to discover the effect of nutrient treatments on phalaenopsis using electrical conductivity (EC) when applying CO₂ in the greenhouse. We investigated the flowering and photosynthetic responses of Phalaenopsis Queen Beer ‘Mantefon’ and ‘Jupiter’ in response to EC-based nutrients supplied with 1.0 (control) and 2.0 dS·m<SUP>-1</SUP> and two levels of ambient and elevated CO₂ (≈ 650 μ㏖·㏖<SUP>-1</SUP> CO₂) for a period of 21 weeks of treatment (WOT). A longer first flower spike was produced in the plants exposed to EC 2.0 dS·m<SUP>-1</SUP> than in those exposed to EC 1.0 dS·m<SUP>-1</SUP> under elevated CO₂, regardless of the phalaenopsis cultivar. Responses to CO₂ and EC in the second flower spike length varied among phalaenopsis cultivars during 0 to 18 WOT; however, maximum second spike length was obtained with EC 2.0 dS·m<SUP>-1</SUP> under elevated CO₂ at 21 WOT in ‘Jupiter’. More visible flower buds and lateral branches were observed in plants exposed to EC 2.0 dS·m<SUP>-1</SUP> under elevated CO₂. The net CO₂ assimilation rate showed significance with CO₂ treatment, regardless of phalaenopsis cultivar. The most flowers were produced in the plants exposed to EC 2.0 dS·m<SUP>-1</SUP> under ambient CO₂ in both phalaenopsis cultivars, but water use efficiency, as well as potential yield, were the highest in plants exposed to EC 2.0 dS·m<SUP>-1</SUP> under elevated CO₂. We conclude that ≈ 650 μ㏖·㏖<SUP>-1</SUP> CO₂ increased the flowering quality of phalaenopsis and recommend adjusting the nutrient concentration with an EC of 2.0 dS·m<SUP>-1</SUP>.