Nihon Shishubyo Gakkai Kaishi (Journal of the Japanese Society of Periodontology)
Online ISSN : 1880-408X
Print ISSN : 0385-0110
ISSN-L : 0385-0110
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Volume 50, Issue 4
Displaying 1-8 of 8 articles from this issue
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A Foreword
Original Work
  • Effects of Xylitol-Containing Chewing Gum on Plaque Formation and Salivary Components
    Hirokazu Sato, Hiroshi Ito, Etsuko Murakashi, Satoshi Sekino, Yukihiro ...
    Article type: Original Work
    2008 Volume 50 Issue 4 Pages 231-237
    Published: 2008
    Released on J-STAGE: February 19, 2009
    DOIhttps://doi.org/10.2329/perio.50.231
    JOURNAL FREE ACCESS
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    The aim of the present study was to investigate the effects of xylitol-containing chewing gum on plaque formation and composition of the saliva. Seven subjects (mean age 31.3±8.5) with apparently healthy gingival, with no evidence of periodontal disease, were enrolled in this study. This study was designed as a single-blind, cross-over, clinical trial. It included one test period (3 days) and one control period (3 days), with a 2-day washout period. At the beginning of each period during the three-day experimental period, the participants were told to abstain from using all mechanical plaque control measures. During the test period, the subjects were instructed to chew 2 pieces of xylitol gum for five minutes, three times a day. At the beginning and the end of each period, the dental plaque formation was scored using the Quigley & Hein plaque index (QHI), and the salivary composition (content, pH, LDH, ALP, F-Hb, S.mutans) was examined. The results revealed that during the test period, the QHI score increased by 1.08±0.08, whereas during the control period, it increased by 1.52±0.23. Thus, the increase in the QHI score was significantly greater (p<0.05) during the test period than during the control period. There were no significant differences in the salivary composition among the groups.
    Nihon Shishubyo Gakkai Kaishi (J Jpn Soc Periodontol) 50(4) : 231-237, 2008.
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  • Influence of cigarette smoke and nicotine on the morphological change of human periodontal ligament fibroblasts.
    Eiko Nishiguchi, Yukie Suzuki, Kazumi Kaneko, Kazuo Todoki, Toshiki Ma ...
    Article type: Original Work
    2008 Volume 50 Issue 4 Pages 238-249
    Published: 2008
    Released on J-STAGE: February 19, 2009
    DOIhttps://doi.org/10.2329/perio.50.238
    JOURNAL FREE ACCESS
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    Cigarette smoking is a risk factor for periodontal disease. The effect of cigarette smoke and nicotine, a major component of tobacco, on the morphological changes of human periodontal ligament fibroblasts (HPLF) was investigated.When suspended HPLF were incubated with cigarette smoke and nicotine solution in a 5% CO2 atmosphere at 37°C, the cells did not neither adhered to the glass nor multiplied.When confluent HPLF were incubated with cigarette smoke and nicotine, shrinking of the cells, with the formation of intracellular spaces, and cellular lysis were observed. The changes depended on the nicotine concentrations and incubation periods. The expression of nicotine-induced cytokines was examined with a RayBioTM human Cytokine Kit using a chemiluminescence method. IL-6 and IL-8, both inflammatory cytokines, were expressed in the HPLF at a low concentration of nicotine. Cell death was observed in the presence of nicotine, as detected by TUNEL. Apoptosis appeared when the cells were incubated with a high concentration of nicotine. The generation of free radicals in the cigarette smoke and nicotine solutions was measured by the spin trapping technique using an electron spin resonance spectrometer(ESR) to identify superoxide anions and hydroxyl radicals. When the HPLF were incubated with hexamethonium, an inhibitor of nicotine receptors, the cells showed altered morphology as well as nicotine-induced morphological changes.
    These results suggest that the HPLF were destroyed via a direct local action through the generation of free radicals induced by nicotine.
    Nihon Shishubyo Gakkai Kaishi (J Jpn Soc Periodontol) 50(4) : 238-249, 2008.
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Case Report
  • A case report of generalized chronic periodontitis patient treated. by basic therapy
    Kumi Toyonaga
    Article type: Case Report
    2008 Volume 50 Issue 4 Pages 250-254
    Published: 2008
    Released on J-STAGE: February 19, 2009
    DOIhttps://doi.org/10.2329/perio.50.250
    JOURNAL FREE ACCESS
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    This case report describes the treatment of a patient with severe chronic periodontitis who was treated with ultrasonic debridement as part of basic therapy. The patient was a 54-year-old male who had noticed some redness, swelling and bleeding of the gingiva and halitosis for several years. Clinical examination revealed that the patient exhibited deep, periodontal pockets, bleeding on probing, suppration and increased tooth mobility in most parts of his dentition. On radiographic imaging, the patient also exhibited generalized severe horizontal bone loss, localized vertical bone loss and a large amount of calculus. Initial therapy with ultrasonic debridement instead of root planning resulted in improvement of his overall periodontal condition with reduction of probing pocket depth and the absence of bleeding on probing. Consequently, after completion of the initial periodontal therapy, periodontal surgery was not required. The patient has been recalled for supportive periodontal therapy (SPT) every month.
    Nihon Shishubyo Gakkai Kaishi (J Jpn Soc Periodontol) 50(4) : 250-254, 2008.
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  • A Case Report : Recovery of Interdental Papillae
    Yukari Sato
    Article type: Case Report
    2008 Volume 50 Issue 4 Pages 255-260
    Published: 2008
    Released on J-STAGE: February 19, 2009
    DOIhttps://doi.org/10.2329/perio.50.255
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    This case study reports on the successful recovery of interdental papillae, which had previously receded during the initial periodontal recovery, through appropriately-timed cleaning with oral self-care items. A 43-year old women visited our clinic complaining of a detached restoration of the lower right second premolar. First the relevant tooth was treated and she was diagnosed as requiring care involving the periodontal treatment of the full mouth, and the initial periodontal therapy was thus started. At the beginning the patient was poorly motivated to present the esthetically compromised anterior segment with destroyed interdental papillae. As the treatment proceeded, she became gradually motivated to worry about the growing interdental spaces. Conservative reconstruction of the papilla was attempted, with appropriately-timed and site-selected use of an interdental brush concomitantly with the recovery of the gingival tissue, and yielded a successful result. Subsequently, maintenance therapy was prescribed to maintain the patient's general periodontal health in good condition. The recovery of the interdental papilla not only provided better esthetics but also allowed for less-frequent interdental cleaning. In addition, in the case of patients such as the one in the present study, their satisfaction with the recovery is expected to help maintain their motivation to continue with regular oral care practices and hygiene.
    Nihon Shishubyo Gakkai Kaishi (J Jpn Soc Periodontol) 50(4) : 255-260, 2008.
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  • A Case Report : Improvement of Deep Periodontal Pockets with Angular Bony Defects by Flap Surgery
    Hitomi Ishiguro, Satoshi Sekino, Yukihiro Numabe
    Article type: Case Report
    2008 Volume 50 Issue 4 Pages 261-268
    Published: 2008
    Released on J-STAGE: February 19, 2009
    DOIhttps://doi.org/10.2329/perio.50.261
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    We report on a 59-year-old male patient diagnosed as having chronic periodontitis who underwent improvement of deep angular bony defects through periodontal therapy including flap surgery. The chief complaint of the patient was increased mobility of tooth 37. The results of clinical and radiographic examinations disclosed the presence of several angular bony defects and furcation involvements. In particular, the distal surfaces of teeth 33 and 43 had 10 to 14 mm periodontal pockets with deep angular bony defects. After completion of basic periodontal therapy that included extraction of tooth 37, plaque control and full-mouth scaling and root planing, we performed flap surgery on the remaining periodontal pockets with angular bony defects or furcation involvements. After surgery, fixed bridges were fabricated at the edentulous portions and supportive periodontal therapy (SPT) was initiated. Six months after active treatment, clinical and radiographic examinations revealed significant reduction of the periodontal pockets and bone apposition of the deep angular bony defects.
    Nihon Shishubyo Gakkai Kaishi (J Jpn Soc Periodontol) 50(4) : 261-268, 2008.
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Educational Award
Dental Hygienist Corner
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