http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Ca-As 레이저 조사가 성견의 기계적 노출치수에 미치는 영향에 관한 연구
이상호,이병채 大韓小兒齒科學會 1994 大韓小兒齒科學會誌 Vol.21 No.1
The purpose of this study was to investigate the effects of Gallium-Arsenide laser irradiation on the mechanically exposed pulp of dog. The anterior and posterior teeth of three dogs, weighting 10Kg, were used in this study. Class V cavities on dog´s teeth were prepared and the pulps were mechanically exposed. In control group, exposed pulps were capped with ??and cavities were sealed with ??. In experimental group I and II, the exposed pulps were irradiated with Ga-As laser(Dens-Bio laser, Dong Yang Medical Co., Korea output power ; 27mW, wave length ; 904nm, frequency ;10,000Hz pulse width ; 200ns) for 2 minutes and 4 minutes each and then they were capped with the same as those of the control group. In experimental group Ⅲ and Ⅳ, the exposed pulps were covered by aluminum foil and sealed with ?? after irradiation with the laser for 2 minutes and 4 minutes each. the animals were sacrificed at the postoperative 1,3,5 week for histologic studles. The following results were obtained in this study; 1. Dentinal bridge was formed more fast and broadly in the experimental group Ⅰ,Ⅱ than other groups but there were no histologic differences in the degree of its formation among control group, experimental group Ⅲ, Ⅳ. 2. Odontoblastic activity at amputated pulp was increased in the experimental group Ⅰ, Ⅱ than other groups but there were no histologic differences in the odontoblastic activity among control group, experimental group Ⅲ, Ⅳ. 3. The inflammation was severe at the postoperative 1 week of all groups, but its condition subsided with time. At the postoperative 3,5 week, its condition in the experimental group Ⅰ, Ⅱ was less severe than that in the control group, but its condition in the experimental groupⅢ, Ⅳ was not different with that in the control group. 4 There were no histologic differences among all experimental groups according to the duration of laser irradiation time.
이상호,김형태,이병채 大韓小兒齒科學會 1992 大韓小兒齒科學會誌 Vol.19 No.2
The purpose of this study was evaluation of dental feature of a Down Syndrome by a group of comsidering the DMFT rate index, oral hygiene status, occlusion status, degree of alveolar bone loss, characteristics in cephalogrem, and behavior reactions in dental office. The obtained results were as follows; 1. The DMFT rate and index of over all examined Down Syndrome group were 21.4% and 4.51 and these values were lower than those of other mentally retarded group. 2. Simplified oral hygiene index was 4.06. 3. Degree of alveolar bone loss in maxillary anterior teeth and mandibular posterior teeth was comparatively higher than mandibular anterior teeth and maxillary posterior teeth. 4. Incidence of Class Ⅲ malocclusion status was high in Down Syndrome group. 5. Incidence of peg lateral, congenital mising, high Ⅴ-vault palate and macroglossia were high in Down Syndrome group. 6. Most of behavior reaction in dental office were rate 2 and rate 3 by Frankl behavior categories. 7. In cephalometric analysis, anoterior and posterior cranial base length, facila height, SNA were lower than normal value and SNB, APDI were higher than normal value.
Pendulum appliance 에의한 상악 대구치의 원심이동
이상호,이창섭,이병채,장은영 朝鮮大學校 口腔生物學硏究所 2000 口腔生物學硏究 Vol.24 No.1
Treatmen of classⅡ malocclusions require distalization of maxillary molars into classⅠ relationship. It can be achieved by extra-oral traction, removable appliances and sliding jigs with classⅡ intermaxillary elastics. However, these treatment modality are heavily dependent on patient compliance. In the 1990s non-compliance therapies in various forms have become prominent than ever before. The pendulum appliance which was first described by Hilgers in 1992 is a hybrid that use a large nance acrylic button in the palate for anchorage, along with 0.32TMA spring. In these cases distalization arm is constructed from 0.9㎜ stainless steel wire which is sodered to molar band. The appliance was reactivated at two weeks intervals. The results have showen that the pendulum appliance is an effective and reliable method for distalizing maxillary molars, provided the anchor unit is adequately reinforced. The eruption of maxillary second molars had minimal effect on distalization of first molar. Its major advantages of sppliance lie in its minimal dependance on patient compliance, patient-acceptance, ease of fabrication, but on the future, many research shold been conducted to evaluate the dental and skeletal effects of pendulum appliance and to assess its influance of the vertical dimension.