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Volume 53 (2003)
- Issue 5 Pages 531-
- Issue 3 Pages 171-
- Issue 2 Pages 83-
- Issue 1 Pages 3-
Volume 53, Issue 3
Displaying 1-7 of 7 articles from this issue
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SPECIAL ARTICLE
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Chiharu SUZUKI, Koji WATANABE2003 Volume 53 Issue 3 Pages 171-180
Published: July 30, 2003
Released on J-STAGE: December 15, 2017
JOURNAL FREE ACCESSIn the early years of the Showa Era (1926-1989), school dental health education were increasingly systematized by school dentists, teachers and school nurses. For dental health education, a variety of teaching materials and instruments were used along with textbooks to give children the knowledge required for good dental health, but they were not organized very well. Lectures and seminars were often given by school dentists. In addition, events such as juvenile talks and plays were given for all students or each grade of students. Dental health training was conducted to help children put the knowledge they obtained about dental health into practice. This mostly consisted of brushing (how to use a toothbrush), rinsing and chewing. It was conducted for all students in each class, grade or school. This certainly made children recognize the necessity of brushing and led to a change in their behavior, although it cannot be denied that individualized instruction was behind the times. With the war regime, the dental health education system, which was originally intended to have children learn to brush their teeth in a correct manner and make a habit of doing it, changed to concentrate on collective and spiritual training and could not be expected to have any significant effect on dental health.View full abstractDownload PDF (1483K)
ORIGINAL ARTICLE
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Hayato NAMEKI, Kimiya NAKAMURA, Okahito HONDA, Manabu MORITA, Mohamed ...2003 Volume 53 Issue 3 Pages 181-187
Published: July 30, 2003
Released on J-STAGE: December 15, 2017
JOURNAL FREE ACCESSThis study attempted to determine the prevalence of temporomandibular disorders (TMD) in Bangladeshi adolescents and to compare TMD prevalence among those residing in urban, peri-urban, and rural communities of Bangladesh. A total of 1,200 adolescents aged 12 to 17 years (600 males and 600 females), selected from urban, peri-urban and rural areas using a multistage random sampling procedure, participated in the study. The subjective symptoms related to TMD were evaluated using a self-reporting questionnaire. Four highly trained dentists clinically evaluated the dysfunction of the temporomandibular joint (TMJ) and masticatory muscles. One-half of the subjects (52% for male and 47% for female) reported at least one subjective symptom. A statistically significant difference was observed in the prevalence of clicking between males and females (p<0.01), however, not for restricted mouth opening or pain in TMJ. The study also reported significantly higher prevalence of pain in TMJ in rural (48.2%) and peri-urban (47.9%) subjects compared to that in urban (31.5%) subjects (p<0.001). The clinical examination found significantly higher prevalence of TMD signs such as clicking (13.1%), TMJ tenderness (18.6%), and muscle tenderness (19.3%) in rural subjects compared to those in urban subjects (4.2% with clicking, 6.9% with TMJ tenderness, and 9.1% with muscle tenderness) (p<0.001). We concluded that a substantial number of adolescents in Bangladesh may suffer from TMD. Community differences among TMD positive subjects in this sub-population were observed, suggesting a need for further multi-factorial studies to explain this difference.View full abstractDownload PDF (698K) -
Sawayo TADATSU, Hiroyuki KIMURA, Ichizo MORITA, Haruo NAKAGAKI2003 Volume 53 Issue 3 Pages 188-199
Published: July 30, 2003
Released on J-STAGE: December 15, 2017
JOURNAL FREE ACCESSThe 8020 health score had been developed for screening of oral health condition in local residents, based on keeping more than 20 natural teeth until the age of 80 years. This study investigated the efficacy of this score in a workplace. We compaced the questionnaire for the 8020 health score and Morimoto's health score to evaluate the general health of 459 workers in a workplace. The results were as follows. 1. A score of 0-4, meaning bad life style, was assessed at the highest rate (77.8%) among the respondents among the three evaluation levels of Morimoto's health score. 2. On 8020, however, more than 16, meaning good, was seen in 28.0%, 11-15, meaning intermediate, was found in 46.5% and less than 10, meaning bad, was found in 25.8%. 3. Only "working form" among the 10 parameters, was significantly related to the total 8020 health score. 4. There were some items on the 8020 health score which related significantly to each score : "sex", "age", "working contents", "working form", "commuting method" and "existence of chronic disease". 5. 8020 health score was significantly correlated with Morimoto's health score except for the item about smoking (Spearman's correlation coefficient : 0.361, p<0.001). 6. Subject ranked higher on Morimoto's scale on 7 of the 8020 items, except items about smoking in those rated good. These finding suggested that the 8020 health score is useful for to estimating oral health in the workplace.View full abstractDownload PDF (1476K) -
Isamu NAKAMICHI, Ayatsugu TANIKAWA, Hiroshi MIZUKOSHI, Shusei HARADA, ...2003 Volume 53 Issue 3 Pages 200-210
Published: July 30, 2003
Released on J-STAGE: December 15, 2017
JOURNAL FREE ACCESSThe "Cooperative Dentists System for Workplace Dental Health Promotion" was established in 1988 by the division of adult and industrial dental health, Toyama Dental Association. The purpose of this system was to promote and maintain oral health at workplaces through providing dental health examinations and dental health education. About 70 percent of the association members registered as cooperative dentists. In this study, we analyzed oral health status and dental health behavior of workers in large company who had been receiving dental health promotion activities for 14 years. The following results were obtained. 1. In the workplace where we provided dental health promotion activities for a long term, the rate of workers who brushed their teeth more than three minutes and also more than twice a day increased over 14 years. 2. The decrease of mean decayed teeth (DT) and mean missing teeth (MT) and the increase of mean filled teeth (FT) were observed. However, the total number of teeth and the treatment needs for periodontal disease did not change. 3. After implementing workplace dental health promotion activities, a temporary increase of dental expenditure was observed. However, over a long term, the ratio of dental expenditure to total medical expenditure decreased by 4-6 percent. From these results, it was suggested that oral health status and dental health behavior were improved, and we speculate that dental expenditure was saved by our workplace dental health promotion activities.View full abstractDownload PDF (1354K) -
Ichizo MORITA, Atsushi TOYAMA, Noriko KUMAGAI, Kaori FUKUZAWA, Kyoko Y ...2003 Volume 53 Issue 3 Pages 211-220
Published: July 30, 2003
Released on J-STAGE: December 15, 2017
JOURNAL FREE ACCESSPurpose : The present study was undertaken to assess public understanding of dental terms and identify individual characteristics that influenced the degree of understanding of dental terms. Methods : We created an Internet survey with questions that evaluated the degree of understanding of 17 dental terms. Results : The results were as follows ; 1. Respondents had a high degree of understanding of the terms dental calculus, dental plaque, interdental brush and xylitol. 2. Words that were recognited at rates that varied with age were dental calculus, implant, plaque control, informed consent, dental floss and fluoride application. 3. Words with recognition influenced by gender were dental calculus, periodontal pocket, health promotion, teeth bleaching, interdental brush, xylitol, dental floss, remineralization and temporomandibular disease. 4. Occupation influenced recognition of 16 dental terms, all except dental floss. 5. Words that had different levels of understanding in various parts of Japan were implant, plaque control, informed consent, tooth bleaching, 8020 and xylitol. Conclusion : These findings suggested that it is possible to assess the degree of understanding of dental terms through an Internet survey of the 20s to 40s age group, and that individual characteristics influence the degree of understanding of dental terms.View full abstractDownload PDF (1147K) -
Akira KOMATSUZAKI, Takehiko SUETAKA2003 Volume 53 Issue 3 Pages 221-226
Published: July 30, 2003
Released on J-STAGE: December 15, 2017
JOURNAL FREE ACCESSIn a previous study, we examined a method for evaluating masticatory function in adults using a laser beam with occlusal balance as an index. It is known that the permeable laser method is easy to apply to infants. Making use of the strong point of the laser, we carried out this study to evaluate the occlusal balance in children in the primary dentition period. A total of 92 infants attending a nursery school were enrolled into this study. Those children who came under Hellman's dental age IIA were divided into group A (dft=0), group B (1≦dft≦5) and group C (6≦dft). Those in the IIC were classified as group D. Comparisons were made between these four groups for occlusal contact area, volume of coronal portion, and centroid. Especially, differences in occlusal balance were carefully studied if changes in occlusal balance could be measured by use of such new indices as the rate of displacement ratio and anterior-posterior ratio. Our findings were as follows : 1. Comparisons of mean occlusal contact area between groups revealed that the values for group D exceeded those for any group that came under the IIA. 2. Significant differences were noted between group A and group D in the rate of displacement, between group A and group C in the anterior-posterior ratio, and between group C and group D in each mean value (p<0.05). 3. Single regression analyses of values obtained for each evaluation item showed that there was a positive correlation between the rate of displacement and dft (r=0.28, p<0.05) and also between the volume of the coronal portion and the anterior-posterior ratio (r=0.60, p<0.01). From these findings, we concluded that differences in occlusal balance could also be examined by our method in infants in the primary dentition period. In terms of homeostasis during the period of growth and grasping the influence of caries on mastication, our findings suggested that observing occlusal balance would be very useful.View full abstractDownload PDF (675K) -
Kiichiro OGURA, Hisahiro KAMOI, Tomoko TANAKA, Tsutomu SATO, Kyuichi K ...2003 Volume 53 Issue 3 Pages 227-231
Published: July 30, 2003
Released on J-STAGE: December 15, 2017
JOURNAL FREE ACCESSTen male Wistar rats were divided into a control group (n=5) and a zinc-deficient group (n=5). They were fed for 3 weeks on a special purified powder feed diet (standard control diet, containing 60 μg/g Zn ; Zn-deficient diet, containing 0.5μg/g Zn) in order to study the effects of Zn deficiency on bones. The rats in the Zn-deficient group showed lower levels of both serum Zn and alkaline phosphatase activity than the control rats. Although no clear morphological differences in the three-dimensional structure or trabecular structure of the femur, mandible, or root bifurcation alveolar bone of the periodontal tissue were observed between the control and Zn-deficient groups, bone density was significantly lower in all bones in the Zn-deficient group. These results suggest that multiple types of bone tissue, including those that form the periodontal tissue, may be affected by Zn-deficiency.View full abstractDownload PDF (700K)
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