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김종여,김종수,김용기,최장규 大韓小兒齒科學會 1998 大韓小兒齒科學會誌 Vol.25 No.1
The efficacy of several polpotomy methods were svaluated histologically on animal model using 6 beagles. At 1, 4, 6 weeks after pulpotomy, animals were sacreficed by perfusion method. Histomorphometric analysis was performed using computerized image analyzing system. Statistical comparisons were done using SPSS program. The following results were obtained: 1. Tissue responses after ferric sulfate treatment mainly consisted of fibrous ourface layer with the underneath pulpal tissue layer containing well-preserved odontoblasts. 2. Bleeding, fibrosis and necrosis are the main reactions obsereved in electrosurgical pulpotomy and the normal pulpal tissues were limited to the apical portion. 3. In the aspect of preserving the normal pulpal tissue, ferric sulfate pulpotomy was evaluated to be superior to formocresol or electrosurgical pulpotomy.
상아질 결합제가 컴포머의 불소유리에 미치는 영향에 관한 연구
윤여상,김종수,권순원,김용기 대한소아치과학회 2001 大韓小兒齒科學會誌 Vol.28 No.2
본 연구의 목적은 와동 충전시 충전재와 지질 사이에 개재되는 상아질 결합제가, 수복물에서 유리되는 불소가 와동 벽으로 침투하는 과정에 어떠한 영향을 주는지를 조사함이었고, 부가적으로 레진 강화형-글라스 아이오노머 시멘트의 접착에도 상아질 결합제를 도포하는 것이 체질과의 결합력을 강화시킬 수 있는지에 대해 평가하고자 하였다. Fuji II LCR와 Dyract APR를 선정하여 상아질 결합제의 도포 여부에 따른 불소 유리량 측정과 전단 결합 강도도를 비교분석하였으며, 치질 내로의 불소 침투 양상은 교환 시기에 있는 재2유구지에 Fuji II LCR와 Dyract APR를 충전하고 3주내에 발거하여 EPMA필 분석하였다. 상아질 결합제는 불소 유리량을 현저하게 감소시키는 것으로 나타났으며(p<0.05) Fuji II LCR의 경우 상아질 결합제의 도포가 결합강도를 증가시키지 못하였다. EPMA분석결과 상아질 결합제는 충전재로부터 유리되어 나오는 불소가 치질 내로 확산되는 것을 방해하는 것으로 확인되었다. It is well known that glass-ionomer cement and compomer can release fluoride which can inhibit the progresion of dental caries. The purposes of thins study were to evaluate whether the fluoride from fluoride-containing ailing materials can penetrate the dentin bonding adhesive and the dentin bonding adhesive can increase the bond strength of resin-modified glass lonomer. The amount of fluoride release from resin-modified glass lonomer and compomer was measured during 28 days of period find statistically analyzed by t-test. The bond strength of each material with/without dentin bonding adhesive was measured and also statistically analyzed by t-test. The distribution of fluoride from each material into the tooth was explored by electron probe microanalysis system (EPMA). The expenmental teeth used were second primary molars about to exfoliate. The amount of fluoride from each material was diminished by dentin bonding adhesive during 28 days(p<0.05) and the bond strength was not increased by dentin adhesive in resin-modified glass ionomer. The bond strength of group VI was not detectable. The distribution of fluoride from earth material into teeth was according to dentino-enamel junction and dispersed into pulp from pulpal floor. The widest distribution was shown in resin-modified glass ionomer cement filled without the application of dentin bonding adhesive.
數種의 弗素製材에 의해 前處置 再植 齒牙의 祖織學的 反應에 關한 硏究
金鐘秀,金殷淑,金鐘好,金容琦 大韓小兒齒科學會 1997 大韓小兒齒科學會誌 Vol.24 No.2
The effect of fluoride pretreatment upon root resorption after delayed replantation was studied in beagle dogs. Upper and lower incisors were extracted and bench dried for 45minutes. 1% Stannous Fluoride solution, 2% neutral sodium fluoride gel and 1.23% acidulated phosphate fluoride gel were used for the pre-treatment of replanted root surface in the experimental groups. Replantation was done with no treatment in control group. After of an experimental periods 3 weeks, animals were sacrificed by perfusion followed by sample preparation. A histomorphometric method was applied for evaluation of tissue reactions observed in each group under light microscope. Scanning electron microscopic observation was done to find out any different surface topography between groups. The results were as follows: 1. Fluoride-treated groups showed in general the better healing patterns than untreated control group. 2. Comparisons between three experimental groups revealed the superiority of APF-treated group over the other groups in terms of tissue healing reaction by showing the highest frequency in uncomplicated healing pattern and surface resorption and the lowest in inflammatory resorption, but with no statistical significance(p>.05) 3. Scanning elecron micrographs showed the irregular distribution of resorption cavitie s and the attached bone of variable size and shape in all groups. 4. It can be conclued that the types of fluoride did not have significant impact on the early tissue reactions after delayed replantation under the condition of the present experiment.
遲延再植 時 齒根處理에 따른 齒周組織의 治癒에 關한 硏究
김종여,김종수,김용기,임성수 大韓小兒齒科學會 1998 大韓小兒齒科學會誌 Vol.25 No.1
The purpose of this study was to analyze comparatively the effect of various root pretreatments prior to delayed replantation. Total 6 beagle dogs were used for the experiment and 8 teeth per each animal were treated by several prepared regimens before replantation. After 3 & 6 weeks of experimental periods, animals were sacrificed by perfusion method. The results obtained form the present study can be summarized as follows: 1. All root pretreatment regimen used in this experiment showed effectiveness in the periodontal repair of delayed replanted teeth. 2. The teeth treated by the regimen of stannous fluoride combined with tetracycline revealed more favorable tissue response and less frepuent root resorption or ankylosis than other groups. 3. The long term effect of Group Ⅳ-regimen seems to be worth further study since the result at 6-weeks showed the significant progress in periodontal healing when compared to 3-week result which was not indicated in any other group.