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Swivel joint를 이용한 비대칭 발치증례의 교정적 공간폐쇄
고창희,임성훈,김광원,정동기,김도영,박선주,양용근 조선대학교 구강생물학연구소 2003 口腔生物學硏究 Vol.27 No.1
Extraction therapy is popular treatment protocol in orthodontics. Generally, symmetric premolar extraction is performed. But, in some cases, asymmetric extraction is required to solve asymmetric dental alignment. But asymmetric extraction treatment has side effects and disadvantages like a) collapse of dental arch form. b) canting of occlusal plane, c) extended treatment duration. For a good treatment result, we applied the orthodontic space closing arch wire with swivel joint to allow rotational movement of arch wire segments during space closure, Now we present a case treated with orthodontic space closing arch wire with swivel joint.
고창희,임성훈,윤영주,김광원 대한치과교정학회 2004 대한치과교정학회지 Vol.34 No.1
본 연구의 목적은 다수의 연구들로부터 추출한 각각의 결과를 체계적이고 객관적인 방법으로 병합, 개관하는 통계분석법인 메타분석을 이용하여 상악확장술에서의 견치간 폭경과 대구치간 폭경의 확장 및 급속과 완속 확장에서의 확장량과 재발량을 비교하는 것이었다. 메드라인 검색을 통해 1979년부터 2000년까지의 문헌들 중 사람을 대상으로 상악확장술의 효과에 관해 조사한 문헌 388개를 찾은 후 논문 선택 및 제외 범주에 따라 최종적으로 7개의 문헌을선정하여 메타분석을 시행하여 다음과 같은 결과를 얻었다. 1. 상악확장술에 의한 상악 제 1대구치간 폭경은 평균 6.0mm의 확장되었으며, 보정 후 측정에서 평균4.8mm가 유지되어 평균 20.0%(1.2mm)의 재발경향을 보였다. 2. 상악 견치간 폭경은 제 1대구치간 폭경의 확장보다 2.3mm적은 평균 3.7mm 확장되었으며, 보정 후 측정에서 평균 2.6mm가 유지되어 평균 29.7%(1.1mm)의 재발경향을 보였다. 3. 급속 상악확장술과 완속 상악확장술의 치료효과의 차이는 확장량과 보정 후 재발량 및 유지량에서 6% 미만(0.1-0.3mm)이었다. 그러나 상악 견치간 및 제1대구치간 폭경 변화에 있어서 두 방법 간에 골격성 및 치성 확장량의 비율에서 차이가 있을 수 있다. As a research method that weighs and combines evidence, meta analysis produces evidence that is more powerful than the original studies. The purpose of this study was to compare the intercanine/intermolar expansion and rapid/slow expansion in the maxillary expansion treatment using meta analysis. Medline was searched from 1979 to 2000 for all studies examining the stability of transverse expansion of the human maxilla, and 388 articles were found. Then these articles were reduced to 7 based on the defined inclusion and exclusion criteria, and a cumulative Meta evaluation score was computed for each study. The results were as follows; 1. The mean expansion in intermolar width was 6.0mm. Of the 6.0mm, 4.8mm was retained and 20.0%(1.2mm) was relapsed while wearing retainers. 2. In intercanines width, the mean expansion was 3.7mm. Of the 3.7mm, 2.6mm was retained and 29.7%(1.1mm) was relapsed while wearing retainers. 3. The differences in the amount of expansion and relapse between rapid expansion group and slow expansion group were less than 6%(0.1-0.3mm). But, there might be differences in the skeletal/dental exapnsion ratios according to the expansion method.
3-D 인체 모형을 이용한 골격성 3 급 부정교합 환자의 수술 교정
장성호,고창희,김유정,권성준,윤영주,김광원 朝鮮大學校 口腔生物學硏究所 2001 口腔生物學硏究 Vol.25 No.2
Although the patient is examind for any pathologic conditions and medical problems, the orthodontist generally concentrates his or her focus on diagnostic considerations of the structureal imbalances. The tools to help orthodontists make accurate differential diagnoses of malocclusion, expecially skeletal disharmonies, are the panorama, lateral cephalometrics, posterior anterior cephalometrics, diagnostic set-up, mounted models, facial photography, study model. Among the diagnostic aids, cephalometic analysis often have been used as the cornerstone of the differential diagnostic process for skeletal imbalances, But, many of the popular analysis is use are limited tissue contours. Burstone and others developed to assess and plan for orthognathic surgery. This system was called the Cephalogram for Orthognathic Surgery. Though this system was very useful in diagnosing the nature of a facial dysplasia. It has the limitation of a two-dimensional cephalometric analysis. Therefore we used the Rapid Protyping System to simulate the orthognathic surgery with three dimensional model. RP system needs the CT scanning or MRI data to make the RP model. RP model can be used for simulation surgery, determining accurate amount of surgical movement. In addition to, we could achieve lots of information such as where the osteotomy to be performed, where the bone plate to be fixed, and so on. The present case reports shows how we can more effectively achieve the esthetic results through the using three dimensional RP model when we make the diagnosis and treatment planning of the patient with the severe craniofacial deformity.