• Title/Summary/Keyword: 구치

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A study on the treatment of anterior open bite with midpalatal miniscrews (정중구개부 미니스크류를 이용한 개방교합치료에 대한 연구)

  • Kyung, Seung-Hyun
    • The korean journal of orthodontics
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    • v.34 no.1 s.102
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    • pp.13-21
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    • 2004
  • Recently several techniques have been reported for the treatment of anterior open bite in adults characterized by molar intrusion with skeletal anchorage. In this study, five adult patients who had anterior open bite malocclusion were selected to undergo upper molar intrusion with midpalatal miniscrew to close the open bite. The aim of this study is (1) to validate true intrusion of molars in adults (2) to test the usefullness of midpalatal miniscrews as anchorage for intruding upper molars (3) to evaluate the skeletal and dental changes of open bite closure. The results are as follows. (1) All had true intrusion of the maxillary molars. Mean amount of molar intrusion was 3.4mm(range 1.5-5mm). (2) No movement of midpalatal miniscrew occurred during their use. (3) Open bite closure was achieved for all 5 patients. The mandible closed and B-point rotated anteriorly and upward. The mandibular plane angle and the occlusal plane angle decreased.

The Return of Modern Cinema to the Classic Film : The Storytelling of the Film Asako I & II (모던한 방식으로 찍은 고전적 영화 : 영화 <아사코>의 스토리텔링)

  • Han, Dong-Gyun
    • Journal of Korea Entertainment Industry Association
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    • v.15 no.7
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    • pp.59-70
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    • 2021
  • This research studies the specific cases of Ryusuke Hamaguchi's re-arrangement of the original novel Net emo Samite mo(2010) by Tomoka Shibasaki to his 2018 film Asako I&II. The study focuses on the difference that has been made between the original novel and the film, which occurred after Ryusuke adapted the novel's "Telling" to the film's "Showing." The presence of the passive protagonist and the repetitions are the elements that have been avoided from the traditional Screenwriting theory for a long. Instead of avoiding it, Ryusuke Hamaguchi inherits these traits of the original novel when re-arranging to his film. Despite the presence of a passive protagonist, Hamaguchi's method of adaption increases the attention of the audience by using the other tools of Hollywood's tradition: the use of goal and want of the protagonist. In addition, Hamaguchi's storytelling strategy captivates both the modern cinema audiences and the classical film audiences by creating a story, which both repetitive structure and normative narrative structure were applied.

백두산 화산 위기

  • Yun, Seong-Hyo;Hiromichu, Taniguchi;Haichen, Waei;Jiachi, Ryu
    • Proceedings of the KSEEG Conference
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    • 2007.04a
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    • pp.130-132
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    • 2007
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Age Determination by Tooth Wear and Histological Analysis of Seasonal Variation of Breeding in the Big White-Toothed Shrew, Crocidura lasiura (우수리땃쥐 Crocidura lasiura의 치아 마모에 의한 연령결정과 번식의 계절적 변이의 조직학적 분석)

  • Jeong, Soon-Jeong;Yoon, Myung-Hee;Choi, Jung-Mi;Kim, Hyun-Dae;Lim, Do-Seon;Park, Jin-Ju;Choi, Baik-Dong;Jeong, Moon-Jin
    • Applied Microscopy
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    • v.40 no.1
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    • pp.37-45
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    • 2010
  • Captured wild specimens of the big white-toothed shrew, Crocidura lasiura were classified into three age classes by tooth wear and height of molars, and seasonal variations of breeding and reproductive organs were examined. Juveniles had not tooth wear in molars and height of the third molars were lower than the first and second molars, and had only non-breeding condition. Young adults had little tooth wear and the third molars reached to the first and second molars, and old adults had heavy tooth wear in molars, young adults and old adults had breeding or non-breeding condition according to the season. On the basis of histological examination, seasonal variations of breeding were confirmed that breeding condition of young and old adult males were continued from early February to early October although the breeding activity was the highest in April, that of females were continued from the end of March to October, males reached sexual maturity earlier than females. Whereas the breeding condition seems to cease for non-breeding season because of the deficiency of food resources, soil invertebrates. Young and old adult males of the breeding season had large testes with enlarged seminiferous tubules that were filled with numerous germ cells, and expanded caudal epididymides with a vast number of spermatozoa, and were more than 10.0 g in the body weight and 0.03 g in the testis and epididymis weight. The females of the breeding season were pregnant condition with 4~6 litters or had the Graafian follicles and the corpus lutea in the ovary, and were more than 9.6 g in the body weight.

Changes of periodontopathogens and clinical parameters of periodontal tissue after debanding (교정용 밴드 제거 후 미생물 분포 및 치주 조직의 임상적 변화)

  • Yang, Yu-Mi;Kim, Seong-Sik;Jun, Eun-Sook;Park, Soo-Byung
    • The korean journal of orthodontics
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    • v.36 no.4
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    • pp.263-274
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    • 2006
  • Objective: The purpose of this study was to evaluate clinical and microbiological changes in periodontal tissue around the banded molars after debanding. Methods: This study included 17 young adult patients treated with fixed orthodontic appliances including bands on the last molars more than 1 years. Probing depth and bleeding frequency were measured and plaque samples were collected from the last banded molars in all quadrants of each patient. All the data were collected immediately after debanding and 4 weeks after debanding. Results: Using polymerase chain reaction based on 16S rDNA, the presence of Porphyromonas gingivalis, Tannerella forsythia and Treponema denticola was detected. After debanding, probing depth, bleeding frequency, and prevalance of periodontopathogens were reduced. Probing depth and bleeding frequency were most decreased in the buccal site of the mandibular left molar and were least decreased in the lingual site of the maxillary right molar. Conclusion: The results of this study indicated that proper management of oral hygiene after debanding can recuperate unfavorable periodontal condition caused by orthodontic treatment.

Evaluation of factors influencing the change of vertical dimension fo face after orthodontic treatment (안모의 수직고경에 영향을 미치는 교정적 요인에 관한 연구)

  • Choi, Woo-Jeong;Kim, Sang-Cheol
    • The korean journal of orthodontics
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    • v.31 no.2 s.85
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    • pp.187-197
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    • 2001
  • The change of the vertical dimension is of fundamental importance to the orthodontist. However, the choice between the two methods of treatment, extraction versus nonextraction, is not clear. It is not verified that the extraction method decreases vertical dimension, or nonextraction methods result in an increase in vertical dimension. The purpose of this study was to evaluate the changes of vertical dimension of face after the orthodontic treatment with standard edgewise technique, and to compare them in relation to facial types and bicuspid extraction. The subjects consisted of 165 orthodontic patients (77 of adolescents, 88 of adults), and was divided into vertical nonextraction (VN) group, vertical extraction (VE) group, horizontal nonextraction (HN) group, horizontal extraction (HE) group. Pre-and Post-treatment cephalograms were taken with standard method, traced, and digitized for each subject. The comparison of the measurements were statistically executed with Student's t-test. The results were as follows : 1. The facial height and molar height were increased after orthodontic treatment in the all groups. 2. No significant difference was found in the facial height change between the vertical and horizontal groups. 3. No significant difference was found in the facial height change between the extraction and nonextraction groups. 4. As the upper molars were extruded in adolescents group and lower molars were extruded in adults group, lower anterior facial height (LAFH) was increased. 5. None of the pretreatment variables correlates to the change of lower anterior facial height (LAFH).

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