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이명종,Lee, Myung-Chong 대한치과의사협회 1972 대한치과의사협회지 Vol.10 No.7
The author collected 93 male stone model and 93 female stone model of upper and lower jaw of the koreans as samples and studied the degree of attrition with age increase. Determining the degree of attrition, each normal cusp were given 40 points and calibrated into percentage. The percentage score were examined and analized, and came to the following conclusions. 1) Increased age were found graudually higher the degree of attrition at 10 to 20 age,. The degree of attrition presented localized disappearance of marginal-ridges and marginal grooves. At 30 up to 40 age, about 40 to 50% of the degree of attrition were found gradually on cusp ridges and grooves At 50 to 60 age, it was found about 70 to 80% of attrition. 2) Male score was slightly higher than female. 3) There was no significant difference between male and female score.
[ I - 123 ] IPT SPECT를 이용한 도파민 재섭취부위의 영상화 : 반정성적 분석방법을 이용한 정상인과 파킨슨병 환자의 차이
양승오(Seoung Oh Yang),최윤영(Yun Young Choi),이희경(Hee Kyung Lee),김희중(Hee Joung Kim),류진숙(Jin Sook Ryu),임주혁(Joo Hyuck Im),이명종(Myung Chong Lee) 대한핵의학회 1996 핵의학 분자영상 Vol.30 No.1
N/A Dopamine transporter concentrations have been known to decrease in Parkinson's disease (PD) or increase in Tourette's disorder. The purpose of this study was to evaluate the effectiveness of [I-123]N-(3-iodopropene-2-yl)-2β-carbomethoxy-3β-(4-chlorophenyl) tropane (IPT) as an imaging agent for measuring changes in transporter concentrations with PD. IPT labelled with 6.69+/-0.64 mCi (247.53+/-23.68 MBq) of I-123 was intravenously injected into ten patients(age: 55+/-11) with PD, and six normal controls(NC)(age: 46+/-14) as a bolus. Dynamic SPECT scans of the brain were then performed for 5 minutes each over 120 minutes on a triple headed camera. Time activity curves were generated for the left basal ganglia(LBG), right basal ganglia(RBG), and occipital cortex(OCC). The statistical parameters included the time to peak activity, the contrast ratio of LEG and RBG to OCC at several time points, and the accumulated specific binding counts/mCi/pixel (ASBC) from 0 to 115 minutes. The uptake of IPT in the brains of PD and NC peaked within 10 minutes of injection in all subjects. The maximum target to background ratio in the basal ganglia of PD and NC occurred at 85+/-20 min and 110-+/-6 min of injection, respectively. The BG/OCC ratios at 115 minutes for PD and NC were 2.15+/-0.54 and 4.26+/-0.73, respectively. The ASBC at 115 minutes for PD and NC were 152.91+/-50.09 and 289.51+/-49.00, respectively. The ratio of BG/OCC for the NC was significantly higher than the ratio for PD. SPECT data matched with clinical diagnosis for PDs. The ratio between BG and OCC and the ASBC for PD were clearly separated from NC and may be useful outcome measures for clinical diagnosis. The findings suggest that IPT may be a very useful tracer for early diagnosis of PD and study of dopamine reuptake site.
李鳴鍾 大韓齒科保存學會 1978 Restorative Dentistry & Endodontics Vol.4 No.1
The purpose of this study was to measure penetration of dye stuff(5% Mcthyleneblue, Hematoxylin, Crystal violet and Safranin-O) on silicate cement, Adaptic, Hi-pol and unfilled resin. Each filling material was mixed on the mixing pad and the mixed material was inserted with condensation force of 500gr, 1000gr and 2000gr and without condensation force into preformed glass tube(10mm in diameter and 10mm in height). The specimen was stored in the air for 24hours, then specimen was immersed in various dye solution(5% methylene blue, hernaioxin, crystal violet and safranin-O) for different period of time(1hour and 24hours) These dye-treated specimen was cut horizontally at the middle portion and the dye penetration in cut surface was measured. Following results were obtained. 1. Penetration of various dye was excessive in silicate cement with and without Condensation force. 2. There has been no evidence of dye penetration in unfilled resin. 3. Dye penetration occurred with in 1hour period and the extending time didn't affect the dye penetration.
Carticosteroids hormone加酸化亞鉛을 使用한 根管充塡劑의 臨床的 效果에 對하여
李鳴鍾 中央醫學社 1940 中央醫學 Vol.9 No.6
The author studied 27 canal filling cases with the cement composed of 0.75 mg of dexamethasone and 0.39 g of zine oxide. Routine canal treatment and bacterial culture was done prior to filling procedure. In this study the author obtained favorable results as follows. 1) 12 cases which shown percussion reaction before filling were gradually reacted normally within 6 months. 2) 12 cases with rarefied area were gradually disappeared within 6 months, 5 cases showed slight repairing process, 2 cases showed extreme repairing and 1 case was repaired completely.