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Volume 69 (2002)
- Issue 4 Pages 245-
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Volume 69, Issue 3
Displaying 1-11 of 11 articles from this issue
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Takayuki KURODA2002 Volume 69 Issue 3 Pages 183-187
Published: September 30, 2002
Released on J-STAGE: October 08, 2010
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—Correlation between Evaluation Using a Questionnaire and Masticatory Performance—Tatsuro UCHIDA, Yasuki TAKAHASHI, Takako MURAKAMI, Iwao HAYAKAWA2002 Volume 69 Issue 3 Pages 188-193
Published: September 30, 2002
Released on J-STAGE: October 08, 2010
JOURNAL FREE ACCESSThe purpose of this study was to investigate the relation between evaluation by a questionnaire on masticatory aspects of 20 foods, and masticatory performance obtained using the sieving method, previously used in many studies.
After replacement of upper and lower complete dentures made newly, 28 edentulous patients voluntarily participated in this study. The basal seat area of each patient was scored and divided into two groups, and masticatory ability was evaluated by two methods: using a questionnaire and the sieving method.
The following conclusions were drawn from the data:
1. Evaluation of masticatory ability by both methods used in this study were not associated with gender, age, and evaluation of the basal seat area.
2. Evaluation using a questionnaire and masticatory performance showed significant correlation, and Spearman's correlation coefficient was 0.628 (p<0.001) .View full abstractDownload PDF (747K) -
Shigezo HIRANO, Kenji OKUMA, Iwao HAYAKAWA2002 Volume 69 Issue 3 Pages 194-201
Published: September 30, 2002
Released on J-STAGE: October 08, 2010
JOURNAL FREE ACCESSThe T-Scan system has been used to analyze the distribution of occlusal loading forces, and occlusal contact variability. An enhanced version, the T-Scan II system, has been developed with clinical significance of its center of force. The T-Scan II system was also found to be clinically useful for measuring simultaneous occlusal contacts bilaterally. However, its improvement in accuracy and repeatability is still unknown. In the present study, the accuracy of time recordings, the liner relation between loaded forces and force recordings, the pressure sensitivity, and the variability of force recordings for repeated loadings, were investigated. The conclusions were as follows:
1. By regression analysis between the time and the time recording, the following equation was obtained : Y =0.00357+0.9889 X R2=0.9964. The time recordings were proportion to the real time.
2. The force recordings were acceptably precise, especially for the moderately high level and default level, where a linear relation was observed.
3. The pressure sensitivity showed 6-61 g/cm2 for the high-4 level, 25-581 g/cm2 for the moderate-3 level, 56-1814 g/cm2 for the default level, and 146-3821 g/cm2 for the low-2 level.
4. The stability of force recordings for the repeated loadings was acceptable. A significant influence of repeated loading was found for the low-2 level ; however, no significant difference was found between the repeated loadings, by post hoc analysis. On the contrary, the repetition of continuous loadings raised force recordings gradually, up to 120% at the fourth loading. The level of the force recordings stayed at the same level with no significant influence by repetition.View full abstractDownload PDF (5479K) -
Kayoko SHINADA, Motoko ARIAKE, Satoshi ABE, Yoko KAWAGUCHI2002 Volume 69 Issue 3 Pages 202-206
Published: September 30, 2002
Released on J-STAGE: October 08, 2010
JOURNAL FREE ACCESSThe purpose of this study was to review health information on nutrition in Japanese newspaper articles. The Nikkei Database was used to select articles published in five major newspapers: Asahi, Sankei, Nikkei, Mainichi and Yomiuri. All these dailies have nationwide circulation. The search period was for 7 years, from January 1993 to December 1999. The keywords “diet, ” “health, ” and “nutrition” were used. Consequently, 182 articles were selected and analyzed by determining content and coverage. The articles were published to be targeted for the general population: 123 (67.6%), schoolchildren: 21 (11.5%), and elderly: 18 (9.9%) . The main source of the newspaper articles on diet was health professionals, such as nutritionists and medical doctors. As diet related health problems, the lifestyle-related diseases, obesity, hypertension, and mental health were introduced in the newspapers. Few articles commented on the relationship between oral health and diet, and dental professionals were not much involved in providing health information on diet. The newspaper is a major source for the general public to obtain health information. It is clear that oral diseases and functional disorder influence daily eating habits. It was suggested that dental professionals should provide such information to the general public, using many occasions, such as conducting health guidance at dental clinics, health education at health centers or schools, and also through mass media.View full abstractDownload PDF (769K) -
Satoshi YONEDA2002 Volume 69 Issue 3 Pages 207-214
Published: September 30, 2002
Released on J-STAGE: October 08, 2010
JOURNAL FREE ACCESSEnamel matrix derivative (EMDOGAIN®, EMD) has been clinically used to promote regeneration of periodontal tissue, including cementum, periodontal ligament (PDL), and alveolar bone. However, it has not been clear whether EMD directly affects osteoblastic cells.
To answer this question, we examined EMD effects on bovine PDL cells, rat and mouse bone marrow cells (RBM cells and MBM cells, respectively), and mouse osteoblastic cells (Kusa/A 1 cells) . EMD was dissolved in 10 mM acetic acid and added to the culture medium at a final concentration of 50 μg/ml. EMD stimulated mineralizednodule formation of PDL cells, RBM cells, and Kusa/A 1 cells. In Kusa/A 1 cells, EMD enhanced ALP activity, together with DNA content. Northern blotting analysis on Kusa/A 1 cells demonstrated stimulatory effects of EMD on the gene expression of type I collagen and osteopontin. Further, application of EMD on MBM cell culture, under 1, 25 (OH) 2 vitamin D3 supplementation, stimulated osteoclast-like cell formation.
These results indicate that osteoblastic cells respond to EMD, and that EMD would be potentially useful for bone regeneration.View full abstractDownload PDF (4750K) -
Yuji KABASAWA2002 Volume 69 Issue 3 Pages 215-223
Published: September 30, 2002
Released on J-STAGE: October 08, 2010
JOURNAL FREE ACCESSI investigated the expression pattern of the Pleiotrophin (PTN), a heparin-binding multifunctional protein, to investigate its role in early embryogenesis. The PTN expression dynamically changed during somitogenesis, which seemed to be affected by the interaction of axial (neural tube and notochord) and paraxial structures. In the middle stage (i. e. the hind limb bud level), coordinated expression between somite and neural tube was remarkable in the dorsal part. Separation experiments demonstrated that the PTN expression in dorsal somite depends on some factor secreted by the neural tube. The factor was not the PTN itself, since its forced expression in the neural tube did not affect its somite expression. Other secretory factors in the neural tube that are reported to affect somite development were also examined but failed to change the expression. On the contrary, forced expression of PTN in the neural tube enhanced only the Pax3 expression in somite. These results indicate the complexity of the PTN role in somitogenesis, which might possibly explain the phenotype of Pax3 mutant mouse, Sploch (Sp) .View full abstractDownload PDF (12181K) -
[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...2002 Volume 69 Issue 3 Pages 224
Published: September 30, 2002
Released on J-STAGE: October 08, 2010
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[in Japanese]2002 Volume 69 Issue 3 Pages 225
Published: September 30, 2002
Released on J-STAGE: October 08, 2010
JOURNAL FREE ACCESSDownload PDF (2157K) -
[in Japanese]2002 Volume 69 Issue 3 Pages 226
Published: September 30, 2002
Released on J-STAGE: October 08, 2010
JOURNAL FREE ACCESSDownload PDF (168K) -
[in Japanese]2002 Volume 69 Issue 3 Pages 227
Published: September 30, 2002
Released on J-STAGE: October 08, 2010
JOURNAL FREE ACCESSDownload PDF (185K) -
[in Japanese], [in Japanese], [in Japanese]2002 Volume 69 Issue 3 Pages 228
Published: September 30, 2002
Released on J-STAGE: October 08, 2010
JOURNAL FREE ACCESSDownload PDF (153K)
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