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Volume 19 (1981)
- Issue 3 Pages 431-
- Issue 2 Pages 247-
- Issue 1 Pages 1-
Volume 19, Issue 2
Displaying 1-13 of 13 articles from this issue
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Hisae Moritaka, Mitsutaka Kimura, Tadataka Furuno, Masato Sanka, Takas ...1981 Volume 19 Issue 2 Pages 247-255
Published: August 25, 1981
Released on J-STAGE: January 18, 2013
JOURNAL FREE ACCESS1. A case of dens in dente in the left maxillary lateral incisor was found by chance in the panoramic radiographs in a girl,9 years 4 months old.
2. A radiolucent area extending linearly from the third of the mesial side of the incisal edge of the crown into the pulp cavity was revealed in radiographic findings. A long its periphery, funnel-shaped radio opacity appearing to be dens in dente was recognized. In comparison with 2, the pulp cavity was considerably larger and the radiolucency was accentuated. It was an immature tooth with delayed apexification.
3. Based in the histopathological findings, we discovered that vacuolar degeneration and atrophy were significant in the odontoblast layer, and significant reticu lar atrophy and regressive changes were observed in the dental pulp. Both enamel and dentin, inside and outside, showed about the same degree of calcification.View full abstractDownload PDF (15408K) -
The relationship between interdental spaces and shapes of deciduous dentitionMichiko Nanba1981 Volume 19 Issue 2 Pages 256-275
Published: August 25, 1981
Released on J-STAGE: January 18, 2013
JOURNAL FREE ACCESSMany studies on interdental space in deciduous dentition have suggested the possible relationship between interdental spaces and exchange of teeth. Therefore, the authors have classified deciduous dentition into three types based on the total volume of the space, namely the spaced type as Type I, the normal type as Type II and the closed type as Type III, to study the relationship between the tharacteristics of the shapes and the dentition of the permanent incisors. As materials for this study, plaster casts obtained from 203 non-carious children with normal occlusion, more at Hellman's dental age IIA (average 3 years 6 months) were used. Further, the relationship between Type 3 deciduous dentition and the dentition of permanent incisors was studied in 24maxilla and 22 mandibles of the longitudinal series of the casts which enabled us to observe the condition of Hellman's dental age IIIA among these materials. The results were as follows:View full abstractDownload PDF (11248K) -
Osamu Moriguchi, Kumiko Nozaka1981 Volume 19 Issue 2 Pages 276-286
Published: August 25, 1981
Released on J-STAGE: January 18, 2013
JOURNAL FREE ACCESSWe were able to discover three cases which we r e considered to be supernumerary primary teeth, based on the eruption regions, the forms, sizes and colors of the teeth, the degree of apical formation and resorption, the sizes of the pulpchamber, and a long term observation.
The results were as follows.View full abstractDownload PDF (15081K) -
Yoshiyuki Funakoshi, Akemi Kago, Reiko Nakano, Kenji Arita, Toyoji Hie ...1981 Volume 19 Issue 2 Pages 287-291
Published: August 25, 1981
Released on J-STAGE: January 18, 2013
JOURNAL FREE ACCESSThe hemostatic management for dental treatme n t for a patient with hemophilia is discribed. Our dental treatment schedule was as follows: 1) AMCHA was administered in daily doses of 50-60 mg/kg of body weight for about 7 days following an operation.2) Give replacement theraphy was given preoperatively to raise factor VIII level up to 30% of the normal. Factor VIII level was kept 20% or highter for 24 hours after operation.3) The sockets are protected with a splint pack.
The oral hvgine of these patients poor since they m ay not brush their teeth regulary for fear of initiating bleeding. Therefore, prophylaxis is the most important for prevention of dental caries in these patients. It should be stressed to the patients or parents that periodic examination, nutritional guidance, topical application of fluoride and pit and fissure sealants are of special importance.View full abstractDownload PDF (992K) -
Keiko Yamada, Kazuko Igari, Ryuichi Chida, Hideaki Mayanagi1981 Volume 19 Issue 2 Pages 292-302
Published: August 25, 1981
Released on J-STAGE: January 18, 2013
JOURNAL FREE ACCESSThe purpose of this study was to discover t h e effectiveness of toothbrushing as instructed to children and to discover how long this effectiveness was maintained.
The subjects were 21 children aged 4 to 5 years, attending the nursery school attached to Tohoku University. They had relatively healthy deciduous dentitions.
The experiment was performed as follows.
The plaque on the surfaces of all f u lly erupted teeth was evaluated according to the PHP-Modified and O. P. I. (Occlusal Plaque Index) before giving toothbrushing instructions. Next, the subjects brushed their teeth the way in which they were accustomed. After that the plaque was reevaluated.
They were then given instruction in the horizontal scrubbing technique once a week for three weeks. The p l aque on each tooth was evaluated a week after the last brushing instruction (designated as "right after instruction") and then again after three months and finally six months after instruction.
The plaque scores before and after brushing instruction were given were compared. The results were as follows.View full abstractDownload PDF (2268K) -
Hiromitsu Kohyama, Koichi Hara, Shohachi Shimooka, Kazuo Sanada1981 Volume 19 Issue 2 Pages 303-310
Published: August 25, 1981
Released on J-STAGE: January 18, 2013
JOURNAL FREE ACCESSThe purpose of this study is to determine if pep t i des which relate to carious susceptibility patterns and activity, can be binded in saliva of the children with decayed teeth by SDS-polyacrylamide gel electrophoresis. The subjects were 71 children,3 to 10years of age. In first examination carious susceptibility patterns was recorded, carious activity and was tested,2 ml of whol oral saliva were collected. Saliva was added to 80% methanol and lyophyrized as the starting sample to be used. These samples were electrophoresised using SDS-polyacrylamide gel.
The following results were obtained.
1) The salivary samples were divided into about 5 to 20 bands using SDS-polyacrylamide gel electrophoresis, we discovered that these bands were differen t according to each subject.
2) In the relationship between carious susceptibility patterns and salivary peptides, we were able to discover that carious type IV saliva has considerably fewer peptide ban ds than the other types.
3) In the relationship between carious activity and salivary peptides, we found particuler bands, namely, peptides (molicular weight 50,000 to 100,000) were found in lower carious activity saliva, and peptides (molicular weight 1,500 to 4,500) were found in higher carious activity saliva, and these peptides included much prolin.View full abstractDownload PDF (4231K) -
Kenzoh Hoshino, Takeshi Kasumi, Toshiyoshi Gotoh, Hiroshi Uematsu1981 Volume 19 Issue 2 Pages 311-322
Published: August 25, 1981
Released on J-STAGE: January 18, 2013
JOURNAL FREE ACCESSWe have performed dental treatment on non c o operative chldren under general anesthesia since April 1976 at the Hoshino Dental Clinic in Shibuya, Tokyo.15 1 cases had been treated as of March 1981.
The understanding and eva l u ation by the parent of the pedodontic treatment under general anesthesia at the dental office were also investigated by sending out quest ionaires.
Our patients were from 1 to 13 years of age.88.1% of them were dentalphobic patients and of the remainder,11.9% were mildly mentally handicapped p atients.
All of them were inducted with nitrous oxide-oxygen-halothane an e s thesia and maintained by nasal insufflation. The average time spent for dental treatment was 83minutes and the average number of teeth treated in each case was 13.3. On th e average, anesthesic time was 107 minutes and patients were able to be allowed to return home 172 minutes fater awakening.
We sent out questionaires to 136 guardians whose children had undergone intensive dental treatment and received 120 replies (88.2%).
The results of our questionaires were as fo l l ows:
1) Most of the pediatric patients had been refused t reatment at several dental clinics and referred to our clinic.
2) The majority of th e parents did not know of dental treatment performed under general anesthesia.
3) After treatment, the guardians told us that they were glad to take odvantage of general anesthesia for their children and would recommend it to others.View full abstractDownload PDF (7026K) -
The Initial Spot of the Caries on the Smooth Surface of the Extracted Upper and Lower Primary MolarsSyuji Ogita, Norihiro Yamada, Kuniyuki Goto, Kazuo Kurosu1981 Volume 19 Issue 2 Pages 323-331
Published: August 25, 1981
Released on J-STAGE: January 18, 2013
JOURNAL FREE ACCESSThis study was to investigate the initial spot of the caries of the upper and lower primary molars.
The materials were 341 primary molars in total 98 upper first molars,103 upper second molars,67 lower first molars, and 73 lower second molars which had been extracted in children from 6 to 14 years of age.
Measurments were taken in the distance from the central point of the caries to the anatomically cervical line, and to the salient point of the mesial or buccal surface.
The results were as follows;View full abstractDownload PDF (1759K) -
Yasuo Takeda1981 Volume 19 Issue 2 Pages 332-338
Published: August 25, 1981
Released on J-STAGE: January 18, 2013
JOURNAL FREE ACCESSThe purpose of this study was to evaluate the effec t of early care of oral hygiene for very young handicapped infants and to estimate the relationships between the caries incidence rate and eruption of decideous teeth and body growth, by using semilongitudinal materials, especially for infants who were small for their age.
The materials were obtained from 78 infants (49 cerebral p alsied infants and 29infants with Down's syndrome). At each periodical inspection, the data on number of erupted decideous teeth and def teeth, and caries activity were collected and data of body height and weight were obtained from medical records. The subjects ranged in age from 4 to 48 months.
The following results were obtained;View full abstractDownload PDF (1224K) -
(Macaca fascicularis) at Deciduous Dentition Stage with Sp e c i a l Reference to its Facio-lingual ViewHideo Minegishi1981 Volume 19 Issue 2 Pages 339-354
Published: August 25, 1981
Released on J-STAGE: January 18, 2013
JOURNAL FREE ACCESSMorphological studies were carried out on the g ubernacular canal. This canal starts from the alveolar bone of the lingual side of the deciduous tooth and ends at the bony crypt of the succeeding permanent tooth. The plastic-embedded ground sections, cut at the facio-lingual direction, were examined microscopically. They were obtained from the dried skulls of crab-eating monkeys which were estimated to be at the stage of deciduous dentition.
The results were obtained as followsView full abstractDownload PDF (4900K) -
Kazuaki Nonaka, Ikuko Nakano, Yoshihiko Hamano, Minoru Nakata1981 Volume 19 Issue 2 Pages 355-361
Published: August 25, 1981
Released on J-STAGE: January 18, 2013
JOURNAL FREE ACCESSAmelogenesis imperfecta is known as a hereditar y disease which is confined only to the enamel, while the other hard tissues are normal in quantity and quality. In this article, we examined two sisters,13 years old and 11 years o l d, as well as their mother, all of whom were affected with amelogenesis imperfecta. In addition to the routine dental examination, in vivo observation of the detailed surface structures of the affected teeth was performed using a scanning electron micrscope (SEM) by means of the replica technique. The follow i ng results were obtained: 1) The disease is restricted to all permanent teeth, and the appearance of the enamel surface showed, what is called, welliger Schmelz.2) Based on the clinical findings and SEM findings, this case could be classified as the hypoplastic type according to Witkop and Rao.3) The mode of inheritance in this case is the autosomal dominant or sex-linked dominant type judging from their pedigree.4) For the observation of the surface structure of enamel in vivo, the replica technique was shown as the most reliable method to observe the detailed structure of tooth in vivo, and exhibited an excellent reproducibility.View full abstractDownload PDF (13607K) -
Hitomi Ohyama, Hideaki Imanishi, Shizuo Sobue, Tomohiro Matsumura1981 Volume 19 Issue 2 Pages 362-368
Published: August 25, 1981
Released on J-STAGE: January 18, 2013
JOURNAL FREE ACCESSMultiple tooth impaction and retarded dental eruption are common symptoms of systemic disorders such as cleidocranial dysostosis, hypothyroidism, osteogenesis imperfecta, and rickets etc. We investigate d a case in which multiple permanent teeth had not erupted without general systemic disorders. The patient (a ten-year-old boy) visited the Pedodontic Clinic of Osaka University Dental School Hospital, because of prolonged retention of primary teeth and tardy eruption of permanent teeth.View full abstractDownload PDF (12076K) -
1981 Volume 19 Issue 2 Pages 369-416
Published: August 25, 1981
Released on J-STAGE: January 18, 2013
JOURNAL FREE ACCESSDownload PDF (10633K)
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