• 대한치과교정학회지
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• 제29권4호
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• pp.503-510
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• 1999

이 연구의 목적은 II급 부정교합의 치료를 위해 경부견인 헤드기어(cervical pull headgear)를 사용할 때, 치료에 불리한 요인으로 작용한다고 언급되는 효과들이 실제로 발현되는지의 여부와 안모의 성장유형에 따라 그 차이가 존재하는 지를 알아 보고자 함에 있다. 이를 위해서 삼성서울병원 치과교정과에서 II급 부정교합으로 진단되어 경부견인 헤드기어로 치료받은 환자중, 성장기에 있으면서 비발치 치료를 받은 환자를 연구대상으로 선별하였다. 그리고 연구대상을 "후안면/전안면 고경비" 에 따라 수직성장군과 수평성장군으로 분류하였다. 수직성장군 15명(남자 5명, 여자 10명)과 수평성장군 11명(남자 4명, 여자 7명)의 치료전, 후의 두부방사선규격사진상에서 SN-PP angle, SN-GoGn angle, SN-MP angle, PFH/AFH ratio, SN to 6, PP to 6 등을 계측하고, 비교분석하여 다음의 결과를 얻었다. 1)수직성장군에서 구개평면이 전하방으로 경사되었다. 2)수평성장군에서 후안면/전안면 고경비가 증가하였다. 3)수직성장군과 수평성장군 모두에서 하악평면각은 변화하지 않았다. 4)상악대구치의 정출양에 있어서 수직성장군과 수평성장군의 차이는 없었다.

• 대한치과교정학회지
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• 제42권5호
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• pp.235-241
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• 2012

Objective: The purpose of this study was to evaluate the validity of the 3-dimensional (3D) superimposition method of digital models in patients who received treatment with rapid maxillary expansion (RME) and maxillary protraction headgear. Methods: The material consisted of pre- and post-treatment maxillary dental casts and lateral cephalograms of 30 patients, who underwent RME and maxillary protraction headgear treatment. Digital models were superimposed using the palate as a reference area. The movement of the maxillary central incisor and the first molar was measured on superimposed cephalograms and 3D digital models. To determine whether any difference existed between the 2 measuring techniques, intra-class correlation (ICC) and Bland-Altman plots were analyzed. Results: The measurements on the 3D digital models and cephalograms showed a very high correlation in the antero-posterior direction (ICC, 0.956 for central incisor and 0.941 for first molar) and a moderate correlation in the vertical direction (ICC, 0.748 for central incisor and 0.717 for first molar). Conclusions: The 3D model superimposition method using the palate as a reference area is as clinically reliable for assessing antero-posterior tooth movement as cephalometric superimposition, even in cases treated with orthopedic appliances, such as RME and maxillary protraction headgear.

• 한국가정과학회지
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• 제5권1호
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• pp.14-27
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• 2002

The purpose of this study is to identify the ritual dress used by the 12 religious bodies of Dankun followers to help understand the teachings of these currently operating religious groups in Korea. The findings from the survey and related literatures are used to analyze the characteristics of these ritual dresses in terms of their items, construction, form, and color. The results of the study are as follows: first, most of the religious groups of Dankun followers have established the code for ritual dresses and they are named as 'chaebok'(제복, sacrificial robes), 'yebok'(예복, ceremonial dress), 'chungbok'(정복, formal attire), 'pubbok'(법복, Buddhist formal dress), or 'tobok'(도복, Taoist garments). The official headgear is usually named as 'chaemo'(제모), 'soogun'(수건), 'moja'(모자), or 'yoogun'(유건, 儒巾). Though, there are some groups which do not use any specific names for headgear. Second, the ritual dresses of most groups are composed of the 'hanbok'(한복,韓服) or usual Western-style dress, a traditional outer wear, 'po'(포,袍), and a headgear, as a basic attire. Third, the traditional 'hanbok' is worn as a base garment and an outer wear is worn above. The different types of outer wear are used: mostly 'chaksu jueui jikyoun po'(착수주의직령포, 窄袖周衣直領袍) for men and 'kwangsu jikyoung po'(광수직령포, 廣袖直領袍) and other various styles for women. The headgear from the ancient times are worn by both men and women. Fourth, the most frequently-used color for ritual dress is white for both men and women's dress. The colors from the Yin and Yang ideology are also used in the ritual dresses. Finally, the kinds of materials are not considered as an important element for the ritual dresses.

• 대한치과교정학회지
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• 제21권2호
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• pp.419-432
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• 1991

The purpose of this study is to observe how the Class III intermaxillary elastics act upon the craniofacial structures of mixed dentition with anterior crossbites. The cephalometric headplafes of 16 childrens treated only with Class III elastics (C III elastics group) and 23 childrens treated with Class III elastics and Reverse pull headgear simultaneously (C III elastics + RPHG group) were traced, digitized and statistically analyzed. The results were as follows. 1 . Anterior displacement of maxilla was observed in both groups. 2. Simultaneous Class III elastics and reverse pull headgear group showed the counterclockwise rotation of maxilla, however Class III elastics group manifested no rotational change of maxilla. 3. Simultaneous Class III elastics and reverse pull headgear group showed the downward and backward rotation of mandible, however Class III elastics group manifested no rotational change of mandible. 4. Counterclockwise canting of occlusal plane, labial tipping of upper incisor and lingual tipping of lower incisor and mesial displacement of upper molar to pterygoid root vertical were observed in both groups.

• 대한치과의사협회지
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• 제48권11호
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• pp.819-828
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• 2010

Activator is a removable functional appliance used for correcting the skeletal Class II malocclusion in children with the mandibular deficiency. Berlin standard activator modified from Andresen activator has following characters; do not cover the palatal surface for tongue space, relief on lingual surface of mandibular incisors and resin capping 1/3-1/2 of crown height on mandibular incisors for preventing labioversion of mandibular incisors, L-hook between maxillary lateral incisor and canine for anterior high pull headgear, relief on mandibular posterior bite block for differential eruption of posterior teeth. Two cases presented here had a mandibular deficiency and slight maxillary protrusion. First case (an 11-year-old girl) treated with Berlin standard activator and anterior high pull headgear for 13 months followed by fixed orthodontic appliance for another 29 months. Second case (a 12-year-old boy) treated with Berlin standard activator for 6 months followed by fixed appliance for another 24 months. Treatment results showed a significant improvement in sagittal skeletal and occlusal relationship without premolar extraction. Mandibular condyles were concentric in TMJ [ossa, and masticatory muscle activities were normalized after treatment. In the retention period facial harmony and occlusal stability was maintained.

• 대한치과교정학회지
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• 제15권1호
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• pp.7-22
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• 1985

The purpose of this study was to analyze the stress distribution and the displacement in the maxillary complex after the application of the reverse headgear. The direction of force was parallel to the occlusal plane. Orthopedic force,300gm, was applied to the maxilla of the dry human skull in a forward direction. The stress distribution and the displacement within the maxillary Complex was analyzed by a 3-dimensional finite element method. The results were as follows: 1. The stress distribution at the molar region was greater than that at the anterior. 2. The stress distribution at the lateral side of the premaxilla was greater than that at the middle aide, especially high stress was noted at the canine eminence. 9. Compressive stress was noted only at the frontozygomatic suture of the zygomatic arch. 4. A forward, upward, and sideward displacement was noted at the entire nodal points of the zygomaticomaxillary suture portion. A displacement with a slight rotation was observed on the transverse palatine suture. 5. The maximum stress was observed at the lateral side of the maxillary tuberosity area, and generally the forward and downward displacement was noted at all this area.

• 대한치과교정학회지
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• 제32권6호
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• pp.425-434
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• 2002

이 연구의 목적은 유년기 건조 두개골에서 상악골 전방 견인 장치로 상악골의 저항중심을 지나는 힘을 가했을 때, 상악 골 복합체의 공간 변화를 평가하기 위함이다. 유치열기 혹은 초기 혼합 치열기로 추정되는 건조 두개골 4구를 사용하여 Delare의 facemask로 modified protraction headgear를 제작하였으며, 각각의 두개골에서 알지네이트 인상을 채득한 후 상악 스플린트를 제작하였다. 전방 견인력을 편측 당 1000gm씩 6시간 가하였다. 전방견인 전과 후 측모 두부방사선사진을 촬영하였으며 정확한 중첩이 가능하도록 1.5mm 길이의 $.017\times.025$TMA wire를 사용하여 9개의 reference marker를 두개골 우측에 위치 시켰다. 본 연구를 통해 상악골 전방 견인시 상악골 복합체의 전방 이동과 더불어 수직적 변화를 관찰할 수 있었으며, protraction headgear의 주된 효과는 상악골의 반시계 방향의 회전, 즉 구개상악부(palatomaxillary region)의 전하방 경사 이동에 의한 것임을 알 수 있었다.

• 대한치과교정학회지
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• 제47권6호
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• pp.375-383
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• 2017

Objective: The purpose of this study was to evaluate the dental and skeletal effects of the modified C-palatal plate (MCPP) for total arch distalization in adult patients with Class II malocclusion and compare the findings with those of cervical pull headgear. Methods: The study sample consisted of the lateral cephalograms of 44 adult patients with Class II Division 1 malocclusion, including 22 who received treatment with MCPP (age, $24.7{\pm}7.7years$) and 22 who received treatment with cervical pull headgear (age, $23.0{\pm}7.7years$). Pre- (T1) and post-treatment (T2) cephalograms were analyzed for 24 linear and angular measurements. Multivariate analysis of variance was performed to evaluate the changes after treatment in each group and differences in treatment effects between the two groups. Results: The mean amount of distalization at the crown and root levels of the maxillary first molar and the amount of distal tipping was 4.2 mm, 3.5 mm, and $3.9^{\circ}$ in the MCPP group, and 2.3 mm, 0.6 mm, and $8.6^{\circ}$ in the headgear group, respectively. In addition, intrusion by 2.5 mm was observed in the MCPP group. In both groups, the distal movement of the upper lip and the increase in the nasolabial angle were statistically significant (p < 0.001). However, none of the skeletal and soft tissue variables exhibited significant differences between the two groups. Conclusions: The results of this study suggest that MCPP is an effective treatment modality for total arch distalization in adults.

• 대한치과교정학회:학술대회논문집
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• 대한치과교정학회 2004년도 제37회 학술대회
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• pp.40.4-41
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• 2004

• 대한치과의사협회지
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• 제19권10호통권149호
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• pp.820-820
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• 1981