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악교정 수술후 하악 근원심 골편의 위치 변화와 안정성에 관한 연구
남광호(Kwang-ho Nam),이상철(Sang-chull Lee) 대한구강악안면외과학회 2003 대한구강악안면외과학회지 Vol.29 No.2
The purpose of this study was to evaluate the patterns of skeletal changes of proximal and distal segments after one jaw surgry and two jaw surgery with posterior impaction using SSRO on mandible in order to determine the skeletal origin of relapse and compare the stability of surgical methods in anterior open bite. The points and lines from lateral cephalometrics were measured before, after surgery, and at least 6-month follow up period. And then, the positional change of the proximal and distal segment were evaluated respectively. The results obtained were as follows; In cases of two jaw surgery, the results were stabler because they had less relapse factors. In cases of one jaw surgery, the value of APD were increased but it didn t relapse to the original value. Both of proximal and distal segments were responsible for the relapse tendency. But in one jaw surgery, the rotation of proximal segment was more responsible, and in two jaw surgery, the rotation of distal segment was.
가토 두개골 결손부에서 합성골이식재와 혼합사용된 혈소판풍부혈장 (PRP)과 혈소판풍부피브린(PRF) 적용에 따른 골형성 효과비교
이덕원 ( Deok Won Lee ),남광호 ( Kwang Ho Nam ),지유진 ( Yu Jin Jee ),이백수 ( Baek Soo Lee ) 한국조직공학·재생의학회 2009 조직공학과 재생의학 Vol.6 No.1
To evaluate the clinical applicability of using PRF mixed with the synthetic bone materials compared to using PRP and no surgical additives. Four bicortical skull defects were prepared in 4 New Zealand white rabbits. In each, 1 defect was used as control and 3 defects were filled with HA/β-TCP, PRP mixed with HA/β-TCP, and PRF mixed with HA/β-TCP separately. After 8weeks, the rabbits were sacrificed and new bone formation was assessed by soft x-ray, conebeam CT and the histomorphometric analysis. Compared tocontrol group, the others showed remarkable bone formations. And PRP and PRF groups showed better results than no additive group. But there was no significant difference between PRP and PRF. The findings demonsatrates that the addition of PRP or PRF enhances bone formation. Though we cannot conclude PRF is superior to PRP from this study only, PRF can help the bone healing.
김영수(Kim Yoong Soo),남광호(Nam Kwang Ho) 성균관대학교 법학연구소 2003 성균관법학 Vol.15 No.1
Even though the presidential pardon has its root from an absolute royal prerogative power of the English King, it shall serve the public welfare under the contemporary constitutionalism. Presidential pardons afford relief from overly harsh judgments or prejudice in the operation or enforcement of crinunal law. The pardon power also operates as a check on the judicial branch of the government. Throughout Korean constitutional history, however, there have been occasions when the pardon power was abused. More recently, a great number of pardons have been illegally granted to improper persons, during Presidents Kim Y oungSam and KimDaeJung's terms in office, and therefore improper influence led to a strmg of unjustifiable presidential pardons. This note examines the history of the pardon power, how a pardon is granted, whether there are any limitations that may be imposed on the presidential pardon power, and how the exercise of the pardon power can be restricted, when it is abused. Especially, a presidential exercise of the pardon power shall be reviewed by the Korean Constitutional Court, when it might result in an invasion of constitutional rights, such as equal protection rights, because it cannot present political questions anymore. Futhermore, since the current Pardon Act seems be not effective to check the abuse of the power, the revision of the Act may be still a matter of debate.
교정전 하악전치부 분절골절단술 시행시 고려사항 및 그 유용성
이백수(Baek-Soo Lee),최현정(Hyun-Jung Choi),남광호(Kwang-Ho Nam),류동목(Dong-Mok Ryu) 대한구강악안면외과학회 2003 대한구강악안면외과학회지 Vol.29 No.1
Anterior set back segmental surgery has been used for shortening the period of orthodontic treatment in case of bimaxillary or maxillary protrusion. In most cases, it requires pre-operative orthodontic treatment. Through properly performed leveling and tooth aligning, the operative porcedure can be easier and post-operative occlusal stability can be increased. But it takes time for orthodontic treatment. Recently, we have been using anterior segmental surgery before orthodontic treatment and have reliable results from that. Therefore, we have to consider arch shape, curve of Spee, tooth selection to be extracted for obtaining of post-operative occlusal stability without pre-operative orthodontic treatment.