• The Journal of the Korean dental association
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• v.22 no.4 s.179
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• pp.329-332
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• 1984

The author observed a patient of ectodermal dysplasia with oligodontia. The treatments were done as follows: Vital pulpotomy and restorative treatment were done as usual method. Removable type space maintainer was set on the area of primary teeth removed. Follow-up checking were required for the observation of growth and development of the permanent teeth and the jaw.

• Restorative Dentistry and Endodontics
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• v.10 no.1
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• pp.187-191
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• 1984

Vital pulpotomies by conventional method were done in 120 male and female cases between the ages of 20 and 60 who visited to SNUDH. The pulpotomized surfaces were covered by FR paste and clinical symptoms were carefully examined 1 week and 4 weeks later. The results were as follows; 1. There was no distinct difference between male and female as a whole, and pain to cold and hot or percussion was increased by aging. 2. Incidence of pain to cold and hot or percussion in group examined 4 weeks later was slightly increased than in group examined 1 week later. 3. There was no case of pain to cold and hot or percussion over all ages after 1 week, but were 5 cases (male 2, female 3) in 40 age, and were 3 cases (male 1, female 2) in 50 age after 4 weeks. 4. In 20 and 30 age, there was no case of pain to cold and hot or percussion after 4 weeks, also.

• The Journal of the Korean dental association
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• v.57 no.8
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• pp.464-473
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• 2019

For dental pulp treatment of immature permanent teeth, direct pulp capping or partial/cervical pulpotomy (apexogenesis) procedures can be used if the dental pulp is vital. MTA (Mineral Trioxide Aggregate) is regarded as the first choice dressing material for these procedures because its higher success rate. It can be also used successfully for devitalized dental pulp which has been treated by calcium hydroxide. This apexification procedure with MTA has a few advantage such as short treatment period and increase of resistance against root fracture. Recently, regenerative endodontic treatment was introduced for devitalized immature pulp. It can maintain pulp vitality and lead to continuing root development although the dental pulp was devitalized.

• Restorative Dentistry and Endodontics
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• v.27 no.4
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• pp.355-362
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• 2002

One fifth dilution of formocresol is usually used for pulpotomy of the primary teeth and emergency pulpotomy of the permanent teeth. However the use of formaldehyde has been subjected to criticism because it may be absorbed into the blood stream and become distributed systemically, it nay also alter the pulp tissue rendering it immunologically active, and have carcinogenic potential. Recently Depulpin$^{\circledR}$(VoCo., Germany) gains popularity as a devitalizing agent during root canal therapy in spite of high concentration of 49 % paraformaldehyde because it facilitate devitalization of pulp and make root canal therapy easier But there have been not enough publications about the reaction of pulp and periapical tissue caused by Depulpin. This study was performed to evaluate the histological changes in pulp and periapical tissue of rats after pulpotomy using formocresol and Depulpin and to elucidate the toxic effects of these agents. Thirty six Sprague-Dawley rats were anesthetized by intraperitoneal injection of ketamine Maxillary first molar teeth were used for pulpotomy with formocresol and Depulpin. Rats were sacrificed after 2 days, 4 days, 1 week, 2 weeks, 3 weeks and 4 weeks respectively. Specimens were histologically observed by light microscope changes in pulp and periapical tissue. The obtained results were as follows. 1. Formocresol group A zone of fixed tissue. in which odontoblasts could clearly be defined, was present directly underneath the pulpotomy dressing in almost all teeth of this group. This was followed by an area of necrotic tissue which resembled dried out fibrous tissue with no cellular detail except some pyknotic nuclei. In the specimens of after 2 days, 4 days, 1 week, 2 weeks in which vital tissue was present, it was separated from the fibrous area by a zone of inflammation. In the specimens of after 3 weeks and after 4 weeks, inflammatory infiltrate was in the periodontal ligament adjacent to the apical foramina of the teeth. 2. Depulpin$^{\circledR}$ group The area of necrotic tissue which had no cells and fibers, was present adjacent to the dressing. This was followed by dried out fibrous tissue with no cellular details except some pyknotic nuclei, A short stump of vital pulp with odontoblasts was present at the end of the canal after 2 days. Inflammatory infiltrate was in the periodontal ligament after 4 days and after 1week. Severe root resolution and necrosis of periapical tissue opposite the root resorption site were defined after 2 weeks and after 3 weeks. Periapical lesion which consist of necrotic tissue surrounded by a fibrous connective wall, was found after 4 weeks. The results indicated that Depulpin can cause more adverse reaction to the dental pulp and periapical tissue than formocresol, and further studies are needed for its clinical use with safety.

• The Journal of the Korean dental association
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• v.25 no.4 s.215
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• pp.359-363
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• 1987

72559 children, who visited the Dept. of Pedodontics, SNU Hospital from 1982 to 1985 were surveyed on the yearly tendency of dental treatment. The data were compared with those of previous reports, and the results were as follows, 1. The number out-patients were decreasing year by year. 2. Compared with those of 1982, in 1985, total number of visiting patient decreased to 14%, amalgam filling, 73.8% vital pulpotomy ; 69.55%, gold inlays ; 42.57%, Space maintainer ; 69.55%, tooth extraction ; 63.99% on the other hand, some items increased such as pulp extirpation ; 192%, canal filling ; 290%, 3. There revealed overall increasing tendency in almost all treatment items except Gold Inlay7s in from 1982 to 1985, compared with those from 1976 to 1979.

• The Journal of the Korean dental association
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• v.10 no.1
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• pp.53-57
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• 1972

저자는 임상적 진단과 치수내 혈액상과이 관계를 규명하기 위하여 치아 우식증에 의하여 심부로 이환된 이십개의 치아를 선택하여 치수절단술을 시행한 후 기 혈액을 검토한 결과 다음과 같은 결론을 얻었다. 1. 임상적으로 치수충혈로 전단된 일곱 개의 치아중, 세 개의 혈액표본을 정상 혈액상을 나타냈고 두개의 혈액표본은 약간의 급성 염증상을 나타냈으나 나머지 두개의 혈액표본은 심한 만성 염증상을 나타냈다. 2. 임상적으로 급성치수염으로 진단된 열세개의 치아중, 열개의 혈액표본은 심한 만성 염증상을 나타냈고 한 개의 혈액표본은 약간의 만성 염증상을 나타냈으며 나머지 두개의 혈액 표본은 급성 염증상을 나타냈다.

• The Journal of the Korean dental association
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• v.20 no.11 s.162
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• pp.929-932
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• 1982

Calcium Hydoxide는 치수복(pulp capping), 생활치수절단술(vital pulpotomy)등에서 bactericidal effect 때문에 많은 사용을 하고 있으며, 최근에는 무수치(pulpless teeth)와 관련된 치근단병소가 있는 경우, 미완성치근단인 경우, 치근흡수, 횡주치근파절(Transverse root fracture)등의 경우에서도 Ca(OH)₂paste를 사용하여 성공적인 근관치료를 할 수 있다. 근관의 instrumentation 과 irrigation후 근과 dressing 은 약 1주일간 행하고 Ca(OH)₂paste를 건조된 근관내에 넣는다. 이때 치근단(root apex)으로부터 약 3~5mm 되게 저속으로 아주 가볍고 부드러운 압력을 가하여 Ca(OH)₂paste를 cotton pellet로 밀어넣고 Sealing(가봉)한다. 이 Temporary sealing은 1개월이상 견딜수 있도록 Cement 또는 Amalgam filling 함이 좋다. Ca(OH)₂paste의 제법은 normal irrigating agents 와 minimal filing으로 시행한다.

• The Journal of the Korean dental association
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• v.11 no.3
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• pp.199-203
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• 1973

Various concentration of formaldehyde solution (1%, 5%, 10%) were applied to cut pulp surface, for 3 minutes and the remaining pulp were carefully examined histo-pathologically. The result were as follows, 1. One week survival group which were treated by 1% formaldehyde solution showed seperation of odontoblast layer randomly and the weil's zone was undistinguishable. Deeper portion of this area was necrotic or coagulated. 2. Two week survival group which were treated 1% formaldehyde solution showed necrotic appearance spread from odontoblastic layer to weil's zone. 3. One and two week survival group which were treated 5% formaldehyde solution showed the odontoblastic layer was highly necrotic, under this zone empty net-work was seen. 4. One and two week survival group treated 10% formaldehyde solution showed complete destruction of pulp.

• Restorative Dentistry and Endodontics
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• v.6 no.1
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• pp.71-75
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• 1980

The purpose of this study was to determine the close relation between clinical symptom and histopathologic finding in pulp. 20 samples of pulp tissue were collected from badly decayed teeth with considerable pulp vitality. Hemogram was also made with the first drop of bleedieg after total pulp extirpation (10cases) and vital pulpotomy(10cases). Histologic specimen was made routinely with extirpated pulp and stained by H&E and P.A.S. Stains. The results under microsopic examination were as follows; 1. Hemogram obtained from dental pulp with acute inflammation revealed increase of polymorphonuclear leukocyte in number, more lymphocytes and monocytes. 2. Hemogram from pulp with chronic inflammation shown the number of lymphocyte and monocyte was remarkably increased. 3. Histologi specimen obtained from teeth with severe clinical symptome showed polymorphonuclear leukocyte infiltration and the hemogram also showed polymorphonuclear leukocytes. 4. Specimen from teeth with moderate symptom showed lymphocyte infiltration and vessel dilatation underneath decayed area. Erythrocytes were massively accumulated inside of the vessel wall.

• Restorative Dentistry and Endodontics
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• v.6 no.1
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• pp.27-35
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• 1980

This study was to evaluate the effectiveness of a few disinfectant on amputated pulps of domestic dogs. The materials employed for the purpose were zinc oxide eugenol paste, calcium hydroxide as control groups and guaiacol (1%, 5%, 10% by weight) added zinc oxide eugenol paste and formaldehyde (1%, 5%, 10% by weight) added calcium hydroxide as experimental groups. Following were the results obtained throngh histo-pathological examination. 1) In calcium hydroxide-formaldehyde groups, secondary dentin formation was observed in the 2 weeks, but the remaining pulp tissue was severely atrophied according to the concentration of formaldehyde and the time increased. 2) In zinc oxide eugenol-guaiacol groups, the first evidence of secondary dentin formation was observed in the 3 weeks. It seems that the concentration variety of guaiacol influenced very little to the potential ability of dentin formation. 3) Except 1% formaldehyde containing calcium hydroxide group, every group showed severe pulp degeneration. In all groups of zinc oxide eugenol-guaiacol cases revealed the tendency of recovery.