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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Restorative Dentistry and Endodontics
Journal Basic Information
Journal DOI :
The Korean Academy of Conservative Dentistry
Editor in Chief :
Volume & Issues
Volume 1, Issue 1 - Nov 1975
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MERCURY LEAKAGE TO SALIVA AFTER AMALGAM FILLING
Kim, Soo-Chul ;
Restorative Dentistry and Endodontics, volume 1, issue 1, 1975, Pages 8~10
This study is to determine or detect deposition of mercury particles emitted from dental amalgam fillings. Amalgam fillings were carried out routinely on the dogs' teeth. (CIV cavities) Mercury which contains about 200
was employed on this purpose in each cavity. Radioactivity was measured by means of well type scintillation counter from saliva and mucous membrane of surrounding tissue. The C. P. M. value from the saliva was highest, mucous membrane was moderate and least on blood and fecs, as shown table on I. II. III. IV. 1. C.P. Mvalue from Saliva reveals 114 to 135 (lowest and highest) throughout the measuring period until 41 hours. 2. From blood samples no significant value was found. 3. CPM value from feces at2nd day and 4th day was about 90. 4. The highest and lowest CPMvalue from marginal gingiva was 465 and 209 respectively. Palatine showed 281 and 189, esophagus 179 and 165, and pulp from experiment tooth 190 and 104 respectively.
EXPERIMENTAL STUDY ON PENETRATION OF ROOT CANAL DENTINE
Yang, Moon-Kyu ;
Restorative Dentistry and Endodontics, volume 1, issue 1, 1975, Pages 11~17
This study is to determine the penetration of various medicaments such as Howe's ammoniacal silver nitrate and methyleneblue, to root canal dentin within given time (5,10,30 sec.) Followings are the results obtained from this study. 1) The dye stuff is more deeply penetrated according to the time elapsed. 2) According to the increase of age, the penetration ratio is decreased accordingly. 3) The penetration ratio of Howe's ammoniacal silver nitrate is higher than that of methyleneblue. 4) The permeability of the root canal dentin is gradually reduced as access to the apex.
CLINICAL STUDY ON THE INTUBATION TO PERIAPICAL LESIOON
Min, Byoung-Duck ;
Restorative Dentistry and Endodontics, volume 1, issue 1, 1975, Pages 18~25
The author has experienced 8 cases of periapical lesion which were very closed to adjacent root tip. To avoid damage on neighboring nerve and blood supply polyvinyl tube was inserted through buccal window leaving a little pathological changes in involved area. The results are as follows: 1. The purpose to maintain adjacent tooth vitality was achieved by means of intubation in the lesion. 2. Swelling and pain after operation was rather lesser than routine apical surgery, because of drainage. 3. The total treatment period seems longer than that of routine apical amputation.
AN EXPERIMENTAL STUDY ON THE EFFECT OF VARIOUS HYDROXIDES UPON THE PULP IN DOGS' TEETH
Um, Chung-Moon ;
Restorative Dentistry and Endodontics, volume 1, issue 1, 1975, Pages 26~32
After a vital pulpotomy in dogs' teeth, the responses of the remaining pulp tissue under hydroxides (calcium hydroxide, magnesium hydroxide, aluminium hydroxide and zinc hydroxide) were studied histologically. The class V cavities were prepared on the teeth and the pulp was amputated. Each hydroxide was placed over the amputated tissue and the cavity was sealed with zinc oxide eugenol cement. Animals were sacrificed after 3 days, 1, 2, and 3 weeks following the operation. The teeth were decalcified, sectioned and stained with hematoxylin and eosin. Microscopic examination reveals as follows; 1. Calcium hydroxide: Inflammatory change was seen in the superficial portion of the remaining pulp tissue at the 3rd day and 1st week. The incompleted calicified material began to be deposited from the canal wall at the 2nd week, and the advanced calcified material was seen at the 3rd week. 2. Magnesium hydroxide: Severe inflammatory change was seen in the superficial portion of the remaining pulp from the 3rd day and the 1st week samples. Inflammatory change was decreased at the 2nd week and the slight calcified material was deposited from the root canal at the 3rd week. 3. Aluminium hydroxide: Severe inflammatory changes were seen in the remaining pulp tissue, the blood vessel was dilated, and the odontoblasts were destroyed at the 3rd day and 1st week. The fibrous degeneration spread to the apex at the 2nd week. There was no evidence of newly formed odontoblasts or deposition of calcified material underneath aluminium hydroxide. 4. Zinc hydroxide: The micrscopic picture was destructive. A thick necrotic layer was found under the amputated surface at the 3rd day and 1st week. Granulation tissue formation as well as chronic inflammatory changes extended to the apical area in the pulp tissue. Also there were no sign of odontoblastic formation or calcified material at the 2nd and 3rd week.
AN EXPERIMENTAL STUDY ON THE FLOW OF CANAL SEALER BY MEANS OF LENTULO
Lee, Myong-Chong ;
Restorative Dentistry and Endodontics, volume 1, issue 1, 1975, Pages 34~38
Artificial canals were prepared by means of engine reamer on the slab which was made of clear acrylic resin. The shape of this canal is similar to the natural canal, the size is almost same as Kerr File No. 70, and the length is about 20mm. Sealer, Zine oxide eugenol mixture was prepared as matched to spatula test. Lentulo filler was inserted as deep as middle portion and apical one-third portion of the canal and the dental engine was driven in the speed of 1,000 and 3,000 r.p.m. in 30 seconds and 60 seconds with feeding of the sealer. The author measured the excess flow of the canal sealer from Lentulo end. Following are the results obtained from this study. 1. Lentulo insertion at the middle portion 1,000 r.p.m. in 30 seconds case: 0.21mm Same as above in 60 seconds: 0.20mm 2. Lentulo insertion at apical-thirds. 1,000 r.p.m. in 30 seconds: 0.22mm. Same as above in 60 seconds: 0.20mm. 3. Lentulo insertion at middle portion. 3,000 r.p.m. in 30 seconds: 0.14mm Same as above in 60 seconds: 0.25mm. 4. Lentulo insertion at apical-thirds, 3,000 r.p.m. in 30 seconds: 0.11mm Same as above in 60 seconds: 0.27mm.
THE CASE REPORT OF THE LARGE DENTAL GRANULOMA TREATED BY APICOECTOMY AND IODOFORM TAMPON CHANGE
Kwon, Hyuk-Choon ;
Restorative Dentistry and Endodontics, volume 1, issue 1, 1975, Pages 39~42
A large granuloma was treated by apicoectomy and tampon change. The granuloma was developed at the apices of the right upper central incisor and lateral incisor. The patient was 29 year old female.
AN IN VITRO STUDY OF ANTIMICROBIAL EFFECT OF INTRACANAL DISINFECTANTS
Chung, Choong-Mo ;
Restorative Dentistry and Endodontics, volume 1, issue 1, 1975, Pages 43~49
This study was divided into two parts. In the first experiment, the in vitro antimicrobial effect was tested in order to evaluate the effect of vapors, and the effectiveness of the nonspecific endodontic medicaments (formocresol, camphorated parachlorophenol and eugenol). In the second experiment, the intracanal effect was tested in vitro under simulated clinical condition. The actual bactericidal effect of the nonspecific endodontic medicaments (formocresol, camphorated parachlorophenol and eugenol) was quantitated. The results were obtained as follows: 1. The zone of inhibition was appeared on the vapors of formocresol only, however there were no zone of inhibition appeared on the vapors of camphorated parachlorophenol and eugenol. 2. Formocresol produced the widest zone of inhibition and eugenol, the next and camphorated parachlorophenol, the narrowest. 3. All of the tested medicaments were vaporized in the root canal. They proved to be the effective antimicrobial activity in the root canal. 4. All of the tested medicaments were showed more bactericidal effect at 72 hours than 48 hours. 5. In comparing with the bactericidal effect of the tested medicaments in the root canal, formocresol was showed the most bactericidal medicament, camphorated parachlorophenol was showed the least. 6. Complete sterilization of the root canal was not achieved in any medicaments applied in this study.
Park, Dong-Soo ;
Restorative Dentistry and Endodontics, volume 1, issue 1, 1975, Pages 50~53