All issues
Volume 58 (1991)
- Issue 4 Pages 643-
- Issue 3 Pages 591-
- Issue 2 Pages 355-
- Issue 1 Pages 1-
Volume 58, Issue 4
Displaying 1-12 of 12 articles from this issue
- |<
- <
- 1
- >
- >|
-
Minoru Al1991 Volume 58 Issue 4 Pages 643-649
Published: 1991
Released on J-STAGE: October 27, 2010
JOURNAL FREE ACCESSDownload PDF (1669K) -
Correlation between Attendance of 3-year-old Children at Dental Health Services and Caries PrevalenceYoko Kawaguchi1991 Volume 58 Issue 4 Pages 650-669
Published: 1991
Released on J-STAGE: October 27, 2010
JOURNAL FREE ACCESSThe purpose of this study was to evaluate the dental health services for children in a health center. The samples were 316 children who had 3-year-old dental examination at a health center in Tokyo. The analysis was carried out by a computer using the results of the children's oral status and of their mothers', questionnaires and past records showing when and how many times they had attended such activities.
The results were as follows:
1. Attendance of children at dental services showed the effectiveness in preventing dental caries, and it was suggested that attendance at least 3 times before the age of 18 months should be the most effective way to decrease the dental caries in the 3-year-olds.
2. According to the questionnaires, time of going to bed, snacks time, and the habit of thumb-sucking at the age of 3 years, and stopping the habit of bottle-feeding and of night breast-feeding at 18 months of age showed a great correlation concerning the number of dental caries in the 3-year-olds.
3. The more often the children had attended the dental services, the more often their behavior for eating snacks and toothbrushing changed for the better.
4. The more the mothers had dental caries, the more was the number of dental caries in their children and moreover their attendance at the dental services was less.View full abstractDownload PDF (4554K) -
Takao Miyahara1991 Volume 58 Issue 4 Pages 670-686
Published: 1991
Released on J-STAGE: October 27, 2010
JOURNAL FREE ACCESSModulation of the human soleus H-reflex (Sol. H-R) was studied during voluntary teeth clenching in 11 healthy adult volunteers, to investigate the possible correlation of motor functions between the jaw and body.
The following results were obtained;
(1) Sol. H-R was facilitated during the maximum voluntary teeth clenching more than during the maximum voluntary efforts in the other parts of the body, i. e., Jendrassik maneuver and clenching of both hands.
2) The amoun t ( of the Sol. H-R facilitation increased with the masseter EMG activity.
3) Facilitation of the Sol. H-R in association with teeth clenching started ca. 60ms before the onset of the masseter EMG activity, reached its peak ca. 100ms after the onset and thereafter decreased to a certain plateau level in accordance with the masseter EMG activity level.
4) During the inhibition of the masseter EMG reflexively evoked by electrica l ( stimulation of the lower lip, the amount of the facilitation of the Sol. H-R during teeth clenching decreased compared with that without lip stimulation, though the facilitation was still retained.
It was concluded that: 1) The excitability of the Sol. H-R is remarkably elevated during teeth clenching. 2) There is a positive correlation between the amount of the facilitation of the Sol. H-R and the teeth clenching force level. 3) The facilitation is due to both the descending influence from the higher brain and the afferent inputs from the oral structures.
It is assumed that the oral motor activity exerts a strong influence on the bodily motor function in general.View full abstractDownload PDF (2870K) -
I. Dental Caries in Ishibashi RatFumiko Ozaki, Makoto Sato, Shogoro Okada, Masahiko Ishibashi1991 Volume 58 Issue 4 Pages 687-691
Published: 1991
Released on J-STAGE: October 27, 2010
JOURNAL FREE ACCESSIshibashi rats (ISR), which have been demonstrated to be excellent experimental animals for congenital vertebral anomaly, are often observed to develop extensive dental caries even when maintained with the conventional diets instead of any caries-producing diets. In this study, dental caries produced in the ISR fed the conventional diets, commercial pellets, was examined and the location and severity of the lesions were compared with those of the albino rats fed the same diet.
The results were as follows:
1. Although no caries was detected up to 100 days of age, 70-100% of the ISR of 101 days and over in age had cerious teeth. In the albino rats, only 7-30% had carious teeth.
2. The severity of the carious lesions was much greater in the ISR than in the albino rats.
3. Only the mandibular molars were attacked by the dental caries, and the lesions ocurred most frequently in the second fissure of the second mandibular molar both in the ISR and the albino rats. Extensive destruction of the crowns of the ISR second mandibular molars were observed in some specimens, but such destruction was not observed in the specimens of the albino rats.
These results suggested that the ISR were susceptible to dental caries, and the development of the dental lesions of the ISR seemed to be rapid compared with that of the albino rats.View full abstractDownload PDF (788K) -
II. Streptococcus mutans Population in Oral CavityFumiko Ozaki, Makoto Sato, Shogoro Okada, Masahiko Ishibashi1991 Volume 58 Issue 4 Pages 692-695
Published: 1991
Released on J-STAGE: October 27, 2010
JOURNAL FREE ACCESSPreviously, it was demonstrated that extensive carious lesions occurred in the Ishibashi rats (ISR) while they were bred with conventional diets. In this study, specimens from the oral cavity of the ISR were examined for the presence of Streptococcus mutans, and its occurrence and population were compared with those of the Wistar rats.
The results were as follows:
1. S. mutans was first found in the mouth of the ISR when the first molars erupt.
2. The number of S. mutans (CFU on the gelatin agar) and its mean percentage of the total streptococci (CFU on the gelatin agar/CFU on the MS agar) in the mouth of the ISR increased rapidly during the few days after weaning, and this increment was comparable to that of the Wistar rats fed caries-producing diets, 6PMV, after weaning. However, the population of the S. mutans remained low in the mouth of the Wistar rats fed conventional diets.
3. In the aged ISR, the number of S. mutans and its mean percentage of total streptococci were also much higher than in the aged Wistar rats.
These data suggested that the ISR harboured increased the number of S. mutans strains in the oral cavity when compared with the Wistar rats.View full abstractDownload PDF (539K) -
Kimihide Kusafuka1991 Volume 58 Issue 4 Pages 696-717
Published: 1991
Released on J-STAGE: October 27, 2010
JOURNAL FREE ACCESSIn 43 cases of adenoid cystic carcinomas of the salivary glands (ACC), expressions of the oncogene products such as epidermal growth factor receptor (EGF-R), erbB-2 product, c-myc product and N-myc product were investigated immunohistochemically. First, we confirmed the specificity of the antibodies used with the 13 cell lines. Of the anti-EGF-R antibodies, clone 29. 1.1 reacted only with A431 but not with the other cell lines overexpressing EGF-R, so that it was most likely to cross-react with the blood type A antigen. Also, the anti-N-myc product antibody revealed the presence of a certain cross-reacting antigen in Lu65.
Overexpression of EGF-R was observed in only one case. Nine cases (20. 9%) showing tubular and cribriform patterns overexpressed the erbB-2 product, but the signals were mainly localized in the cytoplasm as a granular appearance. Eighteen cases (41. 9%) with slight cellular atypia showed an overexpression of the c-myc product. The immunolocalization of the c-myc product was at the nuclei in most cases, or both the nuclei and the cytoplasm in some cases. None of the ACC expressed the N-myc product.
It is speculated that the multiple oncogene expressions might be partly related to the aquirement of the differentiated or malignant phenotype in the ACC.View full abstractDownload PDF (15595K) -
Koyo Nakamura, Hidemi Yoshimasu, Chizuko Komuro, Akiko Kobayashi, Kong ...1991 Volume 58 Issue 4 Pages 718-724
Published: 1991
Released on J-STAGE: October 27, 2010
JOURNAL FREE ACCESSEEC syndrome is a rare congenital malformation characterized by ectrodactyly, ectodermal dysplasia, cleft lip and/or palate. We reported a case of EEC syndrome with cleft palate. The patient was a 15-month-old girl. She had split hands of the upper extremities, syndactyly and polydactyly of the right lower extremity, ectodermal dysplasia including sparse hair, enamel hypoplasia and cleft palate. The patient underwent palatoplasty at the age of 18 months.View full abstractDownload PDF (4548K) -
[in Japanese], [in Japanese], [in Japanese]1991 Volume 58 Issue 4 Pages 725
Published: 1991
Released on J-STAGE: October 27, 2010
JOURNAL FREE ACCESSDownload PDF (237K) -
[in Japanese], [in Japanese]1991 Volume 58 Issue 4 Pages 726
Published: 1991
Released on J-STAGE: October 27, 2010
JOURNAL FREE ACCESSDownload PDF (2291K) -
[in Japanese], [in Japanese], [in Japanese]1991 Volume 58 Issue 4 Pages 727
Published: 1991
Released on J-STAGE: October 27, 2010
JOURNAL FREE ACCESSDownload PDF (2082K) -
[in Japanese], [in Japanese], [in Japanese], [in Japanese]1991 Volume 58 Issue 4 Pages 728
Published: 1991
Released on J-STAGE: October 27, 2010
JOURNAL FREE ACCESSDownload PDF (186K) -
[in Japanese], [in Japanese]1991 Volume 58 Issue 4 Pages 729
Published: 1991
Released on J-STAGE: October 27, 2010
JOURNAL FREE ACCESSDownload PDF (2071K)
- |<
- <
- 1
- >
- >|