제1소구치 발거가 II급 1류 부정교합자의 안모와 치열궁에 미치는 영향에 관한 연구

최낙준,남동석,Choi, Nack Jun,Nahm, Dong-Seok 대한치과교정학회 1986 대한치과교정학회지 Vol.16 No.1

This study was undertaken to compare the main differences and its effects of the 4 first bicuspid extraction on the face and dental arch of the class II div 1 malocclusion. The subjects consisted of twenty two class II div 1 malocclusion, four males, eighteen females, were 14 Years 2 Months old at the stan of the treatment 16 Year 3 Months old at the end of the treatment. (mean age) Twenty one variables were observed by comparing the statistical data of the pretreatment records with postteratment records, which were consited of eight varibles on the study model digitation, thirteen variables on the tracing of the lateral cephalogram. The following results were obtained. 1. No significant change was observed in the intercanine width. 2. Intercuspal widths of the 1st. premolar and 2nd. premolar were decreased. 3. Change of the overjet was dependant upon upper anterior rather than lower anterior. 4. No significant changes were observed in facial plane angle and ANB angle. 5. Uprighting of the lower 1st. molar had an effect on the increase of the facial height.

Neostigmine Treatment of Paralytic Ileus in Critically Ill Patients

최낙준,김태현,홍석경 대한외상중환자외과학회 2017 Journal of Acute Care Surgery Vol.7 No.2

Paralytic ileus is a common complication in critically ill patients, and can affect all parts of the gastrointestinal tract. We report a case of paralytic ileus that improved after neostigmine administration. An 80-year-old man was transferred to the intensive care unit after a diagnosis of severe colitis due to Clostridium difficile infection while under conservative treatment for paralytic ileus . The patient ’s colitis resolved but the ileus did not. This promp ted neostigmine administration, resulting in remarkable improvements in the abdominal physical examination and radiographic images. Bowel movements recovered, oral feeding was restarted, and the patient was transferred back to the general ward. (J Acute Care Surg 2017;7:78-82)

실험적으로 전방이동시킨 가토의 악관절원판에 관한 연구

최낙준,장영일 서울大學校 齒科大學 1990 齒大 論文集 Vol.14 No.2

레진전장관의 금속면 처리방법이 레진과 금속간 접착강도에 미치는 영향

최낙준,방몽숙 전남대학교 치과대학 1993 전남치대논문집 Vol.5 No.1

The purpose of this experiment was to determine the effects of various surface treatments on veneering resin to metal bond for Ni-Cr alloy. The metal surfaces were treated as follows. Group 1 : Ground with carborudum point and followed by silicoating Group 2 : Sandblasted with 50 ㎛ aluminum oxide and followed by silicoating Group 3 : Sandblasted with 250 ㎛ aluminum oxide and followed by silicoating Group 4 : Beaded with 200 ㎛ retention structures and followed by silicoating Group 5 : Silicoated in as cast condition Group 6 : Beaded with 200 ㎛ retention structures only All specimens were veneered with resin. Each group was consisted of 20 specimens. 10 specimens were storaged in 37℃ water for 3 days and the rest 10 specimens were thermocycled 1000 times at temperature of 5℃ to 55℃. The effects of various surface treatments on the bond strength between resin and metal interface were studied by means of four-point flexure test. The specimens which had been ground with carborundum point, sandblasted with 50 ㎛ and 250 ㎛ aluminum oxide, beaded with 200 ㎛ retention structures and not been treated were observed with SEM. The following results were obtained 1. The bond strength of groups 2, 3, 4 and 6 were higher than the that of groups 1 and 5 (p<0.05) in the case of being storaged in 37℃ water for 3 days, and there was no statistically significant difference in bond strength among groups 2, 3, 4 and 6, and between groups 1 and 5(p>0.05). 2. The bond strength of the case of being thermocycled decreased in the following orders : groups 2, group 4, group 3, group 6, group 1, group 5 and there was no statistically significant difference in bond strength among groups 2, 3 and 4, between groups 1 and 5(p>0.05). 3. A statistical difference in bond strength of each group between being storaged and being thermocycled was demonstrated for group 5(p<0.05). 4. The treated surfaces of groups 2, 3 and 4 had more fine undercut than the that of groups 1 and 5 with SEM.

러시아 동시베리아 지역 부랴티야 공화국의 지역 연구

최낙준 배재대학교 한국-시베리아센터 2000 한국시베리아연구 Vol.4 No.-

미백 처리된 치아의 표면처리법이 레진과의 결합에 미치는 영향 : A Confocal Laser Scanning Microscopy Study

최낙준,방몽숙 전남대학교 치의학연구소 2002 구강과학 Vol.14 No.3

The purpose of this study was to estimate the effect of a bleaching agent on tooth surfaces and to evaluate the resin bond strength according to different surface treatments on bleached teeth. To prepare for the experimental samples, first. extracted human third molars were used and the body portions of the crowns were cut into four equal-sized specimens. Next, each specimen was mounted in an plastic bottle with self-cured resin and highly polished to have them reveal the enamel or dentin surfaces. Then, the enamel(E) and dentin(D) specimens were divided into four;1)non-bleached, laser-treated(NBLA) group 2)bleached, laser-treated(BLLA) group 3)non-bleached, acid-treated(NBAC) group and 4)bleached, acid-treated(BLAC)ㅁroup. Here. opalescence®(10% carbamide peroxide) was used for bleaching agent. The treated specimens were observed by confocal laser scanning microscopy and bonded with composite resin for shear bond test. The following results were obtained from this experiment: 1. Compared with the ENB group, the EBL group was shown to be dyed about 20μm deeper with rhodamine B. The DBL group appeared to be caved in at the entry part of the dentinal tubules, was dyed about 20μm deeper and 5μm wider in diameter, compared with the DNB group. 2. In comparison with the EBLAC group. the ENBAC group looked evenly bonded with the resin, while the DNBAC group, compared to DBLAC group. was observed to have its resin tags penetrated about 50μm deeper. Other than those, however, no observable differences between ENBLA and EBLLA group or between DNBLA and DBLLA group were found. 3. At the shear bond test. the ENBAC group was shown to have statistically significant higher shear bond strength than the EBLAC group(p<(0.05). No statlstically significant differences between the ENBLA and the EBLLA groups were observed(f)0.05). 4. At the shear bond test, the DNBAC group was shown to have statistically significant higher shear bond strength than the DBLAC group(p<0.05) No statistically significant differences between the DNBLA and the DBLLA groups were observed(p>0.05). The in vitro observations above suggest that tooth-bleaching procedure brings a certain change on enamel and dentin surfaces and it weakens the shear bond strength with composite resin when the bleached tooth was acid-treated.

미백 처리된 치아의 표면처리법이 레진과의 결합에 미치는 영향

최낙준,방몽숙,박하옥,Choi Nak-Joon,Vang Mong-Sook,Park Ha-Ok 대한치과보철학회 2002 대한치과보철학회지 Vol.40 No.5

The purpose of this study was to estimate the effect of a bleaching agent on tooth surfaces and to evaluate the resin bond strength according to different surface treatments on bleached teeth. To prepare for the experimental samples, first, extracted human third molars were used and the body portions of the crowns were cut into four equal-sized specimens. Next, each specimen was mounted in an plastic bottle with self-cured resin and highly polished to have them reveal the enamel or dentin surfaces. Then, the enamel(E) and dentin(D) specimens were divided into four ; 1) non-bleached, laser-treated(NBLA) group 2) bleached, laser-treated(BLLA) group 3) non-bleached, acid-treated(NBAC) group and 4) bleached, acid-treated(BLAC) group. Here, $opalescence^{(R)}$ (10% carbamide peroxide) was used for bleaching agent. The treated specimens were observed by confocal laser scanning microscopy and bonded with composite resin for shear bond test. The following results were obtained from this experiment : 1. Compared with the ENB group, the EBL group was shown be dyed about $20{\mu}m$ deeper with rhodamine B. The DBL group appeared to be caved in at the entry part of the dentinal tubules, was dyed about $20{\mu}m$ deeper and $5{\mu}m$ wider in diameter, compared with the DNB group. 2. In comparison with the EBLAC group, the ENBAC group looked evenly bonded with the resin, while the DNBAC group, compared to DBLAC group, was observed to have its resin tags penetrated about $50{\mu}m$ deeper. Other than those, however, no observable differences between ENBLA and EBLLA group or between DNBLA and DBLLA group were found. 3, At the shear bond test, the ENBAC group was shown to have statistically significant higher shear bond strength than the EBLAC group(p<0.05). No statistically significant differences between the ENBLA and the EBLLA groups were observed(p>0.05). 4. At the shear bond test, the DNBAC group was shown to have statistically significant higher shear bond strength than the DBLAC group(p<0.05). No statistically significant differences between the DNBLA and the DBLLA groups were observed(p>0.05). The in vitro observations above suggest that tooth-bleaching procedure brings a certain change on enamel and dentin surfaces and it weakens the shear bond strength with composite resin when the bleached tooth was acid-treated.

레진전장관의 금속면 처리방법 레진과 금속간 접착강도에 미치는 영향

최낙준,방몽숙,Choi Nak-Joon,Vang Mong-Sook 대한치과보철학회 1994 대한치과보철학회지 Vol.32 No.4

The purpose of this experiment was to determine the effects of various surface treatments on veneering resin to metal bond for Ni-Cr alloy. The metal surfaces were treated as follows, Group 1 : Ground with carborudum point and followed by silicoating Group 2 : Sandblasted with $50{\mu}m$ aluminum oxide and followed by silicoating Group 3. Sandblasted with $250{\mu}m$ aluminum oxide and followed by silicoating Group 4 : Beaded with $200{\mu}m$ retention structures and followed by silicoating Group 5 : Silicoated in as cast condition Group 6. Beaded with $200{\mu}m$ retention structures only All specimens were veneered with resin. Each group was consisted of 20 specimens. 10 specimens were storaged in $37^{\circ}C$ water for 3 days and the rest 10 specimens were thermocycled 1000 times at temperature of $5^{\circ}C\;to\;55^{\circ}C$. The effects of various surface treatments on the bond strength between resin and metal interface were studied by means of four-point flexure test. The specimens which bad been ground with carborundum point. sandblasted with $50{\mu}m$ and $250{\mu}m$ aluminum oxide. beaded with $200{\mu}m$ retention structures and not been treated were observed with SEM. The following results were obtained 1. The bond strength of groups 2, 3, 4 and 6 were higher than the that of groups 1 and 5 (p<0.05) in the case of being storaged in $37^{\circ}C$ water for 3 day and there was no statistically significant difference in bond strength among groups 2, 3, 4 and 6. and between groups 1 and 5 (p>0.05). 2. The bond strength of the case of being thermocycled decreased in the following orders : groups 2, group 4, group 3, group 6, group 1, group 5 and there was no statistically significant difference in bond strength among groups 2, 3 and 4, between groups 1 and 5 (p>0.05). 3. A statistical difference in bond strength of each group between storaged and being thermocycled was demonstrated for group 5 (p<0.05). 4. The treated surfaces of groups 2, 3 and 4 had more fine undercut than that of groups 1 and 5 with SEM.

동사 문체 도의어의 특성과 기능 모델

최낙준 한국노어노문학회 2000 한국노어노문학회 학술대회 발표집 Vol.2000 No.4

CAE technology of Wind Turbine Engineering

최낙준 한국유체기계학회 2009 유체기계 연구개발 발표회 논문집 Vol.2009 No.-