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曺圭澄,梁楨玉 大韓齒科保存學會 1987 Restorative Dentistry & Endodontics Vol.12 No.2
The purpose of this study was to investigate the pulpal responses of dental adhesive resins. A total of 40 cavities of the permanent healthy teeth from 4 dogs were prepared. In the experimental group, the cavities were etched for 1 minute with citric acid and filled with experimental resins (ie. Super-Bond C & B^ⓡ). In the control group, the cavities were filled with calcium hydroxide base materials (ie. Dycal^ⓡ) without etching. The dogs were sacrificed at one, two, three and four weeks after the time of filling and the specimens were routinely prepared and stained with Hematoxylin-Eosin. The microscopic findings were as follows: Infiltration of inflammatory cells was not observed in both experimental and control groups. Change in the odontoblastic layer was not observed in all control groups but severe swelling was observed in deep dental pulp tissue of the control two and three week cases. Pulp tissue was recovered with plenty of fibrous component in the control four week case and reparative dentin formation was not occurred in all cases. Slight changes of the odontoblastic layer beneath the cavity were observed in the experimental one week case. In experimental two and three week cases, swelling of deep pulp tissue was increased and localized reparative dentin formation was observed. In the experimental four week case, odontoblastic layer was recovered with regular appearance and fibrous component of the pulp was increased, but reparative dentin formation was not evident.
曺圭澄,李再煥 大韓齒科保存學會 1987 Restorative Dentistry & Endodontics Vol.12 No.2
ABSTRACTThe experimental study was made to evaluate the influence of retentive grooves on the canal wall upon the retention of post, using different type of cements. Ninety periodontally involved anterior teeth were extracted and divided into six groups of 15 teeth.The groups were labeled as follows: Group I: Dentatus post cemented zincphosphate cement into post hole with smooth wall. Group II: Dentatus post cemented with zincphosphate cement into post hole with retentive grooves. Group III: Dentatus post cemented with glass-ionomer cement into post hole with smooth wall. Group IV: Dentatus post cemented with glass-ionomer cement into post hole with retentive grooves. Group V: Dentatus post cemented with composite resin adhesive into post hole with smooth wall. Group VI: Dentatus post cemented with composite resin adhesive into post hole with retentive grooves. The tensile strength was tested by an Instron type tester with cross-head speed of 5mm per minute.The results were as follows: In the group without retentive grooves, three kinds of cement have little effect upon reten- tive capacity of Dentatus post. The Dentatus post cemented on the canal wall with retentive grooves is more retentive than Dentatus post without retentive grooves.
조규증 慶北大學校 齒科大學 1989 慶北齒大論文集 Vol.6 No.1
During preparating the canal, air-driven sonic system and hand instrumentation were quantitatively compared for their ability to remove dentin from root canals of standardized seventy-two extracted single-rooted teeth, along with the H-file, Helisonic and Rispisonic file. The results were as follows : There was no statistically significant difference between hand and air-driven sonic instrumentation in using of H-file and Rispisonic file respectively. Hand instrumentation appeared slightly superior to air-driven sonic system in Helisonic file. In this study, air-driven sonic system. was not significantly better than hand instrumentation in the ability to remove intracanal dentin.
조규증 慶北大學校 齒科大學 1987 慶北齒大論文集 Vol.4 No.1
저자는 치아우식증의 관리실태를 연구하기 위하여 대구시내에 거주하는 6세에서 12세까지의 학동, 남자 852 명, 여자 747 명, 총 1,599 명을 조사대상으로 하여 유치우식치명율을 조사하여 다음과 같은 결과를 얻었다. 전 연령층에서 남자 18.25 %, 여자 18.85 %, 남녀합 18.54 %였으며, 6세에서 13.74 %, 7세에서 16.69 %, 8세에서 19.72 %, 9세에서 17.88 %로 나타났다. 그리고 10세에서 23.40 %, 11세에서 17.80 %, 12세에서 24.32 %로 나타났다. 도시지역학동의 유치우식치명율이 비교적 높게 나타났으므로, 이들의 구강보건 향상을 위하여 구강보건에 대한 효과있는 계몽과 치과의료의 효율적인 공급이 절실히 요구됨을 알 수 있으며, 구강보건사업을 통하여 유치의 우식예방과 조기치료에 대한 부모의 관심도를 더욱 증진시켜야 하겠다. The author made an epidemiological study and examined the deciduous tooth fatality rate of 1599 Korean elementary school children aged from six to twelve years, residing in the Taegu city. The obtained results were as follows; The deciduous tooth fatality rates in the six, seven,eight and nine years old were 13.74%, 16.69%, 19.72% and 17.88%, respectively. And the deciduous tooth fatality rates in the ten, eleven, and twelve years old were respectively 23.40%, 17.80% and 24.32%. The average deciduous tooth fatality rate was 18.54% and there is nothing in difference between male and female. This results indicate that we must effort more effective education of dental health and more efficient supply of dental care, and improve the preventive dental care and early treatment of the developing-children residing in the urban area.
글라스 아이오노머 세멘트가 家犬 露出 齒髓組織에 미치는 影響
曺圭澄,金在漢 大韓齒科保存學會 1987 Restorative Dentistry & Endodontics Vol.12 No.2
ABSTRACTThe present study was designed to help elucidate the effect of glass ionomer cements on the exposed dental pulp by means of histologic examination.A total of 40 cavities of class V were prepared on the teeth of 4 dogs with exposure of 1mm in diameter on the bases of them. 20 cavities were filled with glass ionomer cement as the experi- mental group and the other 20 cavities were filled with zinc oxide eugenol cement as the control group.The dogs were sacrificed at one, two, three, and four weeks after filling, and the specimens were routinely prepared and stained with Hematoxylin-Eosin.The obtained microscopic findings were as follows:Inflammatory cell infiltrations were observed in control in 1 week, which decreased markedly with time. In all control groups, hemorrhage around exposed pulp tissue and coagulation change of pulp were observed. Secondary dentin formation and thickened predentin were observed in 4 week cases, and the recovery of pulp tissue was favorable on the whole.Inflammatory cell infiltration was observed in all GIC groups. Proliferation of blood vessel and congestion were observed with coagulation changes around the exposed pulp tissue. Secon- dary dentin formation and thickened predentin were observed in 3 weeks. In the experimental 4 week case, secondary dentin formation was evident.On the whole, pulpal irritation of glass ionomer cement was relatively severe. Recovery of pulp tissue in GIC groups was less favorable compared with that of ZOE groups.
曺圭澄 慶北大學校 齒科大學 1986 慶北齒大論文集 Vol.3 No.1
著者는 國民口腔保健의 增進을 爲해서는 初期學童들에 對한 口腔保健管理가 效率的인 한 方法일 것으로 判斷하여, 이에 對한 地域社會의 再認識이 時急함을 疫學的으로 調査, 提示할 目的으로, 社會的, 經濟的 與件이 比較的 良好하다고 할 수 있는 大邱直轄市 都心部의 " S ", " J " 國民學校 學童 男子 852名, 女子 747名, 都合 1,599名을 對象으로 世界保健機構에서 勸奬하는 基準에 따라 乳齒 및 永久齒의 우식경험율을 調査하고, 우식경험치아에 對한 우식치아의 百分率인 우식치율을 算出한 바 다음과 같은 結果를 얻었다. 1. 都市地域 學童의 우식 乳齒率은 6才부터 12세才까지의 全體 年齡層에서 男子 平均 75.25%, 女子 平均 77.78%였으며, 男女 總合의 平均値는 76.39%였다. 2. 우식 永久齒率은 全體 年齡層에서 男子 平均 68.77%, 女子 平均 75.82%로 男子보다 女子에서 多少 높게 나타났으며, 男女 總合의 平均値는 72.23%였다. 3. 都市地域 學童의 우식치율은 男子 平均 73.33%, 女子 平均 77.24%이며, 全體 平均値는 75.25%로 나타나 乳齒, 永久齒를 莫論하여 約 75%로 以上의 우식이충치아가 齒料醫療의 未需給 狀態인 것으로 드러나, 學校口腔保健事業의 根本的 對策樹立과 그 實施가 時急함을 알 수 있었다. It has been widely known that the dental health care of primary school children is one of efficient ways for improving the degree of oral health. So it seemed to be worth that the proportion of teeth with untreated caries to caries experienced teeth was evaluated to appreciate the direction for improving the dental health of school children. The author had epidemiologically studied and evaluated the decayed teeth rates in deciduous and permanent dentition of 1599 Korean primary school children aged from six to twelve years residing in Taegu city area. The obtained results were as follows ; 1. The decayed teeth rate in the deciduous teeth of Korean school children of urban area was 75.05% at male, 77.78% at female and 76.39% at the average of both. 2. The decayed teeth rate in the permanent teeth was 68.77% at male, 77.24% at female and 72.23% at the average of both, it showed some difference of decayed teeth rate in the permanent teeth between male and female. 3. The overall decayed teeth rate in the deciduous and permanent teeth was 73.33% at male, 77.24% at female and 75.25% at the average of both, so the number of more than 75% of caries experienced teeth was untreated and remained in oral cavity of primary school children of urban area as conditions involved with caries. At the point of view, special consideration must be paid to programs of the dental health education in school, and more intensive ways of the oral health care than now is needed.
GLUTARALDEHYDE 처리한 가견 절단 치수조직의 중장기간 관찰
조규증,박진훈,신홍인 慶北大學校 齒科大學 1988 慶北齒大論文集 Vol.5 No.1
성견의 상하악치아 총 84개을 대상으로 생활치수절단술을 시행한후, 2% 및 4% GA희석액을 실험군으로, Dycal을 대조군으로 적용하여 4개월 경과후 그치수반응을 광학현미경으로 관찰한 바 다음과 같은 결과를 얻었다. Dycal군을 제외한 전 실험군 표본은 치수 전방에 걸친 광범위한 염증세포의 침윤을 나타내었으며 그 정도는 미만성에 미세 농양 형성까지 다양하였고 GA 2%군에서 보다는 GA 4%군에서 더 심한 양상이었다. 2차 상아질의 형성은 치수벽 전면에 걸쳐 각 실험군 모든 표본에서 현저하여 치수강이 상당히 협소화되어졌으며 그 정도는 Dycal군에서 가장 왕성하였고 다음은 GA 2%군, 4%군 순이었다. 특히 Dyucal군에서는 2차 상아질에의한 상아교의 형성이 명확했다. This experimental study was performed to evaluate the pulpal response to the glutaraldehyde diluted to 2% and 4%, comparing with the response to the Dycal as control group, in 84 teeth of dogs with routine vital puloptomy. The animals were sacrificed after 4 months following pulpotomy and each specimen was prepared for histopathologic examination with light microscope. The results were as follows; The specimen of experimental groups, 2% glutaraldehyde dressing group and 4% glutaraldehyde dressing group, showed diffuse inflammatory infiltrate with or without microabscess formation in all experimental periods. In general the inflammatory infiltrate was severer in 4% glutaraldehyde dressing group than in 2%. On the contrary, the control group, Dycal dressing group, showed no inflammatory infiltrate in all specimens. The reparative dentin formation along dentinal walls resulting in narrowing of pulpal cavity was marked in all experimental and control groups. The peripheral deposition of calcified tissue was most favorable in Dycal dressing group and was followed in descending order of 2% and 4% dressing groups. The dentin bridge was not formed except for Dycal group showing complete formation.
曺圭澄 慶北大學校 醫科大學 1980 慶北醫大誌 Vol.21 No.2
齒牙健康度란 齒牙機轉의 生物學的 單位로써, 第一大臼齒의 機能에 對한 能力이며, 우식, 喪失 또는 充塡處置에 依하여 滅少되고, DMF指數는 齒牙健康度와 最大의 齒牙健康度와의 差異點을 나타낸다. 署者는 僻地인 山間地域에 居住하는 7才부터 12才까지의 男女學童 1953名을 對象으로 第一犬臼齒의 齒牙健康度 및 DMF指數를 著査한 바 다음과 같은 結果를 얻었다. 1. 山間地域學童 第一大臼齒의 齒牙健康度는 男女 平均하여 7才에서 97.13, 8才에서 95.48, 9才에서 95.23이며 11才 및 12才에서는 93.70 및 92.60으로서, 年齡이 增加함에 따라 減少되어 나타났고, 反對로 DMF指數는 增加되어 나타났다. 2. 全體年齡에서 第一大臼齒의 DMF指數는 男子에서 4.15 및 女子에서 6.25이며 全體年齡에 걸쳐서 犬體로 女子가 男子보다 多少 높았다. 3. 一人當 保有하고 있는 第一大臼齒의 DMF齒牙數는 年齡의 增加에 따라 大體로 增加되어 나타났고, 男女 全體年齡에서 1.02個로서 山間地域 學童의 成長期의 齒牙健康을 爲하여 齒科醫療의 供給이 時急히 必要함을 알 수 있다. Dental health capacity is defined as the capability of the first permanent molars to function as a biologic unit of the dental mechanism and the DMF index represents the difference between the dental health capacity and maximum dental health capacity. The author had epidemiologically studied on the dental health capacity and the DMF index of first permanent molars of 1953 Korean school children at the age from seven to twelve years residing in the mountain village. The obtained results were as follows; 1. Dental health capaclty of first permanent molar of children at the both sex was 97.13 at the age of seven years, 95.48 at the age of eight years, 95.23 at the age of nine years, and 93.70 and 92.60 at the age of eleven and twelve years, and so decreased with aging, but DMF index showed increased. 2. DMF index at the total age of first permanent molar was 4.15 at male and 6.25 at female, all through the ages female was slightly higher than male. 3. The average number of DMF teeth of first permanent molar was increased with aging and was 1.02 at the total age. The author could find that Korean school children residing in mountain village need urgently the dental treatment care for their improvement in dental health.
글라스 아이오노머 세메트가 家犬 齒髓組織에 미치는 影響
金榮載,曺圭澄 慶北大學校 齒科大學 1987 慶北齒大論文集 Vol.4 No.1
The present study was designed to help elucidate the effect of glass ionomer cements on the dental pulp by means of histopathological examination. Total 28 cavities of class Ⅴ or class Ⅰ were prepared on the teeth from 4 dogs and filled with glass ionomer cements experimentally and calicium hydroxide base materials as control. The dogs were sacrificed at one, two, three and four weeks after the time of filling and the specimens were routinely prepared and stained with Hematoxylin-Eosin. The obtained microscopic findings were as follows; The aspiration of odontoblast to dentinal tubules were observed in 1 case of calcium hydroxide group and 5 cases of experimental glass ionomer group. Changes in the odontoblastic layer were also marked in experimental group and altered odontoblasts shows shorter and compressed appearance. In three and four week case, infiltration of chronic inflammatory cells an pulp tissue just beneath the odontoblastic layer was extensively noted in experimental group and on the other hand, localized configurations in control group. Secondary dentin formation was not observed in this experiment, but irregularities and vanishing of predentin layer was markedly seen in glass ionomer cement group. Vascular changes, such as capillary dilatation and localized congestions, were seen at pulp tissue under the prepared dentinal wall and its degree was much higher in galss ionomer cement group compared to calcium hydroxide group.