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Volume 69 (2002)
- Issue 4 Pages 245-
- Issue 3 Pages 183-
- Issue 2 Pages 81-
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Volume 69, Issue 4
Displaying 1-13 of 13 articles from this issue
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Ken OMURA2002 Volume 69 Issue 4 Pages 245-250
Published: December 30, 2002
Released on J-STAGE: October 08, 2010
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Toshiaki SEKITA, Shyo HASEGAWA, Iwao HAYAKAWA2002 Volume 69 Issue 4 Pages 251-257
Published: December 30, 2002
Released on J-STAGE: October 08, 2010
JOURNAL FREE ACCESSIt is important to clarify stomatognathic functions. To diagnose them, some measuring devices, such as MKG and the Gnatho-hexagraph, were developed. Such equipment, however, is not widely diffused, due to cost. The purpose of this fundamental study was to obtain information on position using an accelerometer. This system consists of a micro dualaxis accelerometer and a peripheral interface controller. Twodimensional acceleration, velocity, and movement can be calculated by a computer. We examined the accuracy of this system using a laser measuring device. The result was as follows:
The accuracy of the system was 0.03 (p-p values) using acceleration of gravity and a frequency of 72.5 Hz. In the present study, mandibular movements during chewing raisins were analyzed using this system. The new system demonstrated its value for analyzing mandibular movements.View full abstractDownload PDF (2317K) -
Tomoko NATSUME, Harue AOKI, Makie OCHIUMI2002 Volume 69 Issue 4 Pages 258-262
Published: December 30, 2002
Released on J-STAGE: October 08, 2010
JOURNAL FREE ACCESSIn our outpatient oral surgery section, nurses have performed such nursing activities as guidance and consultation for outpatients. The present survey was conducted to clarify the actual situation of nursing activities, and that of claims for medical fees during fiscal year 2000, the year the claim for medical fees was started. At that time, the problems involved were examined to further improve nursing activities for outpatients.
The nurses gave guidance on alimentation, oral hygiene, and breast feeding, from the nurse's record which were classified and totalled according to each disease, guidance item, and time required (less than 30 minutes or more than 30 minutes) . The total numbers of patients were 172 persons and 357 cases. Major guidance items were alimentary guidance (179 cases), oral hygiene guidance (105 cases), and breast feeding guidance (73 cases) . The items claimed for medical fees were two : “Athrocytosis function therapeutics” (9 cases) and “the guidance fee for the treatment of specific dental disease” (32 cases) .
The problems that discouraged claiming a fee for performed chargeable nursing activities are listed as (1) there are no exclusive guidance rooms, (2) insufficiency in securing staff, (3) the instructions and the requests by dentists have not been made exactly and smoothly. Thus, the problems to be considered hereafter would be (1) review and improvement in the guidance environment to an appropriate level, (2) make regulations for securing necessary staff, (3) construction of a system for exact and smooth instruction and requests, and (4) promotion to enrich the content of guidance and to make the results public.View full abstractDownload PDF (758K) -
Sawako YOKOYAMA, Noriyuki WAKABAYASHI, Makoto SHIOTA, Takashi OHYAMA2002 Volume 69 Issue 4 Pages 263-268
Published: December 30, 2002
Released on J-STAGE: October 08, 2010
JOURNAL FREE ACCESSThis study examined the influence of medial implant location in three-unit posterior cantilever fixed partial dentures (FPDs) on stress distribution in mandibular bone surrounding two implants. A three-dimensional finite element model that included three-unit FPD and two cylindrical-type implants (4 mm in diameter and 10 mm in length) osseointegrated in the posterior mandible, was digitized. Five different models were created according to the medial implant location between the missing second premolar and the first molar location. The distal implant was fixed at the missing second molar location. Oblique bite force of 100 N at 30° buccal to the vertical direction was directed on each of three artificial teeth, respectively and simultaneously, while the lower surface of the mandible was fixed. The maximum equivalent stress in the cortical and the trabecular bone generally increased as the medial implant shifted to a distal position. Under the simultaneous bite force, relatively low maximum stresses within the cortical bone : between 55 MPa and 57 MPa, were shown in the models with the medial implant placed within the range of one implant diameter from the most medial position, while higher maximum stresses : between 64 MPa and 73 MPa, were demonstrated with more distally placed medial implants. The results suggest that reasonably low mechanical stress in the surrounding bone may be assured when the medial implant is placed in the range between the missing second premolar position and one implant diameter distal from that location.View full abstractDownload PDF (3391K) -
Takahiro OHASHI, Minoru KURIYAMA, Hiroyuki MIURA, Takehiro OTAKE, Hide ...2002 Volume 69 Issue 4 Pages 269-276
Published: December 30, 2002
Released on J-STAGE: October 08, 2010
JOURNAL FREE ACCESSBy the surgical orthodontic treatment for the patient who has a malocclusion, scaffold reverse occlusion, it is considered that remarkable change of maxillofacial form in the oro-facial region affects the stomatognathic functions. The purpose of this study was to analyze stomatognathic functions during border-movements and masticatory movements before and after surgical orthodontic treatment. The lateral border movements were analyzed regarding the symmetry of both sides and the change of angle of balancing condylar path. The masticatory movements were analyzed during opening and closing phases. We also analyzed cross patterns. In consequence, the lateral border movements were extended after the surgical orthodontic treatment, and the symmetries of the border-movement were improved. The angle of balancing condylar path did not show a large change in the sagittal plane by a remarkable change of the anterior guidances during lateral movements. However, the balancing condylar path in the horizontal and frontal plane had a tendency to change. The cross patterns of the masticatory movements tended to decrease after the surgical orthodontic treatment, and each of the opening phase and the closing phase tended to separated independently, i. e. each movement became stable. It was also suggested that the occlusal relationships of the upper and lower jaw including occlusal contacts had particular effect on the stomatognathic functions.View full abstractDownload PDF (897K) -
—Usefulness for Evaluating Occlusal Contacts of Complete Denture Wearers—Kenji OKUMA, Shigezo HIRANO, Iwao HAYAKAWA2002 Volume 69 Issue 4 Pages 277-284
Published: December 30, 2002
Released on J-STAGE: October 08, 2010
JOURNAL FREE ACCESSThe purpose of this study was to assess the reproducibility of the T-Scan II® system and its clinical usefulness for evaluating occlusal contacts of complete denture wearers. The occlusal contacts of 13 dentate subjects, and 14 complete denture wearers, were recorded using a T-Scan II® system during maximum voluntary clenching. The recordings for complete denture wearers were taken after each treatment for the new denture, and continued until the completion of all corrections. The recordings for complete denture wearers were analyzed using repeated measured ANOVA. In addition, the variables obtained with the system, the Δ of the occlusal area and load, and the maximum-load time (MLT), which represented the time length taken to reach the occlusal load at the maximum level, were then compared between dentate subjects and complete denture wearers, using a t-test.
The conclusions were as follows:
1. The standard errors values for both occlusal area and the load recordings for the dentate subjects were limited to within 10% of the means.
2 . The values of the occlusal area and load significantly increased, and Δ of the occlusal area and load significantly decreased, as the denture corrections were repeated.
3. The means of the MLT were about 0.3 seconds for dentate subjects, and 0.8 seconds for complete denture subjects.
It was revealed that the T-Scan II® showed acceptable reproducibility, and it was useful to evaluate occlusal contacts of complete denture wearers.View full abstractDownload PDF (1104K) -
Yoshiko MIURA, Kayoko SHINADA, Kazuhiro SHIMOYAMA, Reiko MIZOGUCHI, Sh ...2002 Volume 69 Issue 4 Pages 285-289
Published: December 30, 2002
Released on J-STAGE: October 08, 2010
JOURNAL FREE ACCESSThe purpose of this study was to investigate the effect of regular professional care on oral health status. We examined the oral health status of 255 adults (76 males, 179 females ; 61.8+7.8 yrs) who received professional dental care at the Dental Hospital of Tokyo Medical and Dental University at least once a year. The oral health care included checkups and prevention (oral health education, scaling, polishing, topical application of fluoride) .
We compared the oral health status of adults who received regular professional care with the status of subjects of similar age reported in national and Tokyo surveys of dental diseases in 1999.
The following results were obtained.
1. The number of teeth present among adults who received regular oral health care was greater than that reported in the national and Tokyo surveys of dental diseases in 1999.
2 . The number of untreated decayed teeth among adults who received regular oral health care was smaller than that reported in the national and Tokyo surveys of dental diseases in 1999.
The results show that the oral health status of adults who received regular oral health care was better than the oral health condition of those reported in the national and Tokyo surveys of dental diseases in 1999. Therefore, it is suggested that regular professional care by a dentist or dental hygienist will assist in achieving the objective of the 8020 movement (20 healthy teeth at age 80) .View full abstractDownload PDF (582K) -
Motoko ARIAKE, Kayoko SHINADA, Keiko ENDO, Keiko KONDO, Naomi YOSHIDA, ...2002 Volume 69 Issue 4 Pages 290-295
Published: December 30, 2002
Released on J-STAGE: October 08, 2010
JOURNAL FREE ACCESSA questionnaire survey and oral health examination were conducted in 2000. The subjects were students of dental and dental hygiene schools at Tokyo Medical and Dental University. Subjects totaled 101 (48 males, 53 females), and the average age was 22.0±3.3. The relationship among eating habits, lifestyles, and oral health status of the students was analyzed. The following results were obtained.
1. Almost half of the students did not eat one of the three main meals ; that is, breakfast, lunch, or supper. Most of them skipped breakfast.
2. The students who ate rice (traditional Japanese-style food) for breakfast had less DMFT compared with those who ate other foods, such as bread or noodles, or who did not eat breakfast.
3. The amount of stimulated saliva of the students who ate rice for breakfast was greater than that of others.
4. The oral health behavior and nutrition balance of the students who ate rice for breakfast was better than that of others.
5. The students' eating habits were related to their living styles, such as living alone or with the family.
From these results, it was suggested that educational emphasis on nutrition balance and eating habits is needed for dental students and dental hygiene students, because in the future they must advise patients on good oral health and general health through good eating habits, as dental professionals.View full abstractDownload PDF (873K) -
[in Japanese]2002 Volume 69 Issue 4 Pages 296
Published: December 30, 2002
Released on J-STAGE: October 08, 2010
JOURNAL FREE ACCESSDownload PDF (2478K) -
[in Japanese], [in Japanese], [in Japanese]2002 Volume 69 Issue 4 Pages 297
Published: December 30, 2002
Released on J-STAGE: December 08, 2010
JOURNAL FREE ACCESSDownload PDF (2320K) -
[in Japanese], [in Japanese]2002 Volume 69 Issue 4 Pages 298
Published: December 30, 2002
Released on J-STAGE: October 08, 2010
JOURNAL FREE ACCESSDownload PDF (2620K) -
[in Japanese], [in Japanese], [in Japanese], [in Japanese]2002 Volume 69 Issue 4 Pages 299
Published: December 30, 2002
Released on J-STAGE: October 08, 2010
JOURNAL FREE ACCESSDownload PDF (2431K) -
[in Japanese], Linsuwanont Busayarat, [in Japanese]2002 Volume 69 Issue 4 Pages 300
Published: December 30, 2002
Released on J-STAGE: October 08, 2010
JOURNAL FREE ACCESSDownload PDF (2626K)
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