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Volume 46 (2004)
- Issue 4 Pages 247-
- Issue 3 Pages 175-
- Issue 2 Pages 79-
- Issue 1 Pages 1-
Volume 46, Issue 3
September
Displaying 1-5 of 5 articles from this issue
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Mini Review
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Toshihiko Yajima, Eichi Tsuruga, Kazuharu Irie2004 Volume 46 Issue 3 Pages 175-184
Published: 2004
Released on J-STAGE: September 30, 2005
JOURNAL FREE ACCESSDownload PDF (992K)
Original Works
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Misaki Ohmori, Yuki Sakai, Yuko Morozumi, Akira HasegawaArticle type: Others
Subject area: Others
2004 Volume 46 Issue 3 Pages 185-192
Published: 2004
Released on J-STAGE: September 30, 2005
JOURNAL FREE ACCESSThe aim of this 10-year follow-up study was to evaluate long-term stability during periodontal maintenance care. The study population consisted of a series of 100 consecutive subjects (44 men and 56 women). A total of 2383 teeth were examined. All subjects underwent regular periodontal maintenance care by dental hygienists for at least ten years. Oral hygiene, number of pockets with probing depth over 4 mm, and number of teeth were recorded 4 times during the study period. The subjects were classified in to three groups according to our periodontal severity index. Five subjects were diagnosed with mild periodontitis, 34 with moderate periodontitis, and 61 with severe periodontitis.
There were no significant differences in age, amount of plaque, or number of the teeth present among the groups at their initial visit. After periodontal treatment, the amount of plaque decreased gradually, and the smallest amount of plaque was detected at the 10-year maintenance care visit in all groups. There were no significant differences in amount of plaque between the 3 groups at any time examined. The number of pockets with probing depth over 4 mm kept throughout the study period in all groups. Only 42 (1.8%) of the 2383 examined teeth were lost as a result of progression of periodontitis.
Most of the extracted teeth were molars. Sixty-one percent of the subjects did not lose any teeth during 10 years of maintenance care. The majority of tooth loss occurred in 12% of the subjects, and they also had good plaque control.
The results of this study suggest that proper maintenance care maintained the periodontium in good condition and prevented tooth loss. Periodontitis was the major cause of tooth loss in a minority of the population.View full abstractDownload PDF (352K) -
Effect of Screening for High Risk Patients of Periodontitis in School Periodontal Health ExaminationAyako Iida, Makoto Kobayashi, Rieko Nanba, Taisuke Sato, Megumi Iwamar ...Article type: Others
Subject area: Others
2004 Volume 46 Issue 3 Pages 193-201
Published: 2004
Released on J-STAGE: September 30, 2005
JOURNAL FREE ACCESSTo establish a system to prevent periodontitis in adolescent children, we investigated here the effect of screening for high risk subjects of periodontitis in school dental health examination on subsequent periodontal condition. Eighty-two students participated in the study. Eight sites for each student were examined : the upper and lower medio-buccal and medio-lingual sites of the right and left first molars. Probing pocket depth (PPD<4mm or 4mm≤), bleeding on probing (BOP + or −), and subgingival calculus (+ or −) were measured three times (in '97, '00 and '02). The subjects were 12 years old in 1997. Sites with PPD : 4mm≤, BOP : (+) and subgingival calculus : (+) were regarded as “high risk site of periodontitis”. Following the '00 examination, students who had one or more high risk sites were given written notice about periodontal treatment and oral hygiene practice. All of the proportion of students with high risk sites, the number of high risk sites per one subject and the prevalence of high risk sites significantly increased from '97 to '00. On the other hand, all the values trended to decrease from '00 to '02. In conclusion, we demonstrated that periodontal conditions worsened with increased age, but was slightly decreased after written notices were sent to those who were found to have the high risk sites through screening by the school dental health examination. We, therefore, suggest that it is possible that the written notice contributed to the improvement of periodontal conditions in students with the high risk sites.View full abstractDownload PDF (532K) -
Yasunari Kurosu, Koji Inagaki, Nobuo Yoshinari, Renzo Sato, Daisuke Fu ...2004 Volume 46 Issue 3 Pages 202-208
Published: 2004
Released on J-STAGE: September 30, 2005
JOURNAL FREE ACCESSOsteoporosis is a systemic skeletal disorder characterized by low bone mass. Periodontitis is an inflammation of the supporting tissues of the teeth, usually leading to loss of alveolar bone. The purpose of the present study was to determine the relationship between bone mineral density of mandible (M-BMD) and lumbar spine (L-BMD). Thirty postmenopausal women with periodontitis, who agreed to participate in the study, were divided into 3 groups based on the diagnostic criteria for primary osteoporosis in the Japanese population (2000) ; 10 subjects with normal L-BMD (group N, 60.9±6.6 years, mean±SD), 10 subjects with osteopenia (group O1, 61.7±5.6 years) and 10 subjects with osteoporosis (group O2, 66.6±7.0 years). M-BMD was measured by quantitative computed tomography and L-BMD was measured by dual energy X-ray absorptiometry. The years since menopause in group O2 were significantly longer than those in group N (P<0.05). No difference was found in the physical and smoking status of each group. The number of teeth present and any periodontal parameters, including probing depth, probing attachment level, bleeding on probing and alveolar bone loss, did not differ among 3 groups. The mandibular trabecular BMD (MTBMD) in groups O1 and O2 were significantly lower than those in group N (P<0.05). These results indicate that systemic BMD loss is seemed to be related to the risk of mandibular bone loss and MTBMD loss may be a predictor for postmenopausal women with increased risk of osteopenia/osteoporosis.View full abstractDownload PDF (1682K)
Case Report
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Tomoko Kuno, Jun-ichi Otogoto, Norio Ota, Keiichi Uchida, Yoshinori Ar ...Article type: Others
Subject area: Others
2004 Volume 46 Issue 3 Pages 209-219
Published: 2004
Released on J-STAGE: September 30, 2005
JOURNAL FREE ACCESSSmall three-dimensional (3D) image analysis of computed tomography findings (3DX®) can be used in dentistry to evaluate alveolar bone defects using 3D digital images with a width in the range of 40 mm and a height of 30 mm. 3DX can adjust and super impose two or more photographs. 3DX can also be easily used to measure the amount of alveolar bone defect using software, without the need for a re-entry flap operation.
A 29-year-old male with aggressive periodontal discase underwent periodontal treatment, includings periodontal regeneration. After initial treatment, 3DX® analysis of the alveolar bone defect was used to evaluate the patients progress.
Intrabony bone defects were obsented in the upper first molar and the lower left canine. A periodontally regenerative technique was performed at both sites using a GTR membrane and Emdogein® gel. The state of the alveolar bone defects ware then observed and the the amount of alveolar bone regeneration measured using 3 DX photography as post of the post-treatment clinical evaluation. Alveolar bone absorption had recovered in both of the treated areas 12 months after the completion of the regneration procedures. 3 DX® photography was useful for evaluating and correctly measuring the state of complicated alveolar bone defects after periodontal regenerative treatments.View full abstractDownload PDF (4516K)
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