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 55, Issue 4
Displaying 1-12 of 12 articles from this issue
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A Foreword
Review Article
Mini Review
Original Work
  • Histological Changes of Human Alveolar Bone Periosteal Cell Spheroids Upon Exposure to Low-intensity Pulsed Ultrasound
    Fumi Kawatsu, Kazuyoshi Higashi, Kenji Nemoto, Osamu Takahashi, Shinji ...
    2014 Volume 55 Issue 4 Pages 312-325
    Published: March 28, 2014
    Released on J-STAGE: April 10, 2014
    DOIhttps://doi.org/10.2329/perio.55.312
    JOURNAL FREE ACCESS
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    We have reported that low-intensity pulsed ultrasound (LIPUS) accelerated periodontal wound healing in experimental alveolar bone defects in dogs, however, the exact mechanism is unknown. Herein, we attempted to determine how daily LIPUS stimulation might affect the cell form and bone matrix protein expression in spheroids of human alveolar bone periosteal cells. Histological (toluidine blue) and immunohistochemical analyses (osteopontin (OP) and osteocalcin (OC)) of spheroids were conducted after 1, 3, 7, and 14 days of culture with daily LIPUS stimulation. Layered structures, distinguished by the directionality of the cells, were observed in the spheroids from day 1, with the layered structures becoming indistinct over time in the order of the irradiated side, non-irradiated side, and control. Immunohistochemical reactions indicating OP and OC production were observed in the order of the core, middle layer, and outer layer of the spheroids. Furthermore, positive reactions of OC and OP were seen over time in the order of the irradiation side, non-irradiation side, and controls. In addition, funicular structures were observed in the core from the outer layer of the spheroids on the irradiated side from day 1. These findings show that LIPUS irradiation promotes cell differentiation and changes the cell direction within spheroids. Nihon Shishubyo Gakkai Kaishi (J Jpn Soc Periodontol) 55(4)：312-325, 2013.
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Case Report Review
Case Report
  • A 10-year report of a non-surgically treated patient with severe generalized chronic periodontitis
    Toshinori Tanaka, Ryuji Sakagami
    2014 Volume 55 Issue 4 Pages 331-339
    Published: March 28, 2014
    Released on J-STAGE: April 10, 2014
    DOIhttps://doi.org/10.2329/perio.55.331
    JOURNAL FREE ACCESS
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    This is a 10-year report of a non-surgically treated patient with severe generalized chronic periodontitis, in whom adequate control has been maintained. The patient has 28 teeth, with the prognosis of categorized as “questionable” or “hopeless” according to McGuire,s classification. Most of the teeth were planned to be extracted, although with meticulous maintenance of oral hygiene, scaling/root planing, and occlusal treatment, 22 teeth could be maintained for over 10 years. The patient received a cross-arch splint in the maxilla and temporary splinting in the mandible. He was placed on supportive periodontal therapy, and maintained uneventfully. This case suggested that the control of both inflammation and occlusal force is necessary for achieving successful results of periodontal treatment. Nihon Shishubyo Gakkai Kaishi (J Jpn Soc Periodontol) 55(4)：331-339, 2013.
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  • Bacteriological and immunological assessment of periodontal infection during comprehensive periodontal therapy in a patient with generalized aggressive periodontitis：a case report
    Kazuya Tomikawa, Takayuki Kono, Tadashi Yamamoto, Yoshihiro Iwamoto, M ...
    2014 Volume 55 Issue 4 Pages 340-348
    Published: March 28, 2014
    Released on J-STAGE: April 10, 2014
    DOIhttps://doi.org/10.2329/perio.55.340
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    It is necessary to suppress disease activity under strict infection control in the treatment of patients suffering from aggressive periodontitis, since they are at a high risk of developing periodontal infection. In particular, longitudinal infection control is important to apply orthodontic therapy to patients with pathologic tooth migration and tooth crowding. Nevertheless, no consensus exists on any clinical index for the initiation of orthodontic therapy in patients suffering from aggressive periodontitis. Here, we report a case of comprehensive periodontal therapy in a 22-year-old woman suffering from generalized aggressive periodontitis caused by Agregatibacter actinomycetemcomitans (Aa). We performed not only clinical examinations, but also measurement of the serum IgG antibody titers to periodontal bacteria and bacterial DNA testing by quantitative real-time polymerase chain reaction for immunological and bacteriological assessment of the periodontal infection and disease activity. In the re-evaluation of the effects of periodontal surgery, the bacterial DNA test showed no detection of Aa and also the IgG titer against Aa had decreased to the healthy control level. Thus, we were confident that our comprehensive periodontal therapy had resulted in significant reduction of the disease activity,and subsequently undertook orthodontic therapy. In the present case, we conclude that bacterial DNA testing and measurement of the serum IgG titers against Aa could provide certain evidence for determination of the initiation of orthodontic therapy in patients with generalized aggressive periodontitis. Nihon Shishubyo Gakkai Kaishi (J Jpn Soc Periodontol) 55(4)：340-348, 2013.
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  • Oral hygiene management of aggressive periodontitis patient considering the levels of sex hormones：A case report
    Aki Kawamoto, Yoshihiro Iwano, Midori Motohashi, Chizuko Shimizu, Masa ...
    2014 Volume 55 Issue 4 Pages 349-356
    Published: March 28, 2014
    Released on J-STAGE: April 10, 2014
    DOIhttps://doi.org/10.2329/perio.55.349
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    Sex hormones are among the potential factors modifying the rate of progression of periodontal disease. Increased release of sex hormones in the ovulatory phase of the menstrual cycle and pregnancy may cause proliferation of specific periodontal microorganisms and change the host immunologic responses. In this paper, we report a case of generalized aggressive periodontitis, in which periodontal treatment was successfully performed considering the hormonal changes during the menstrual cycle, pregnancy, and postpartum period. A 27-year-old woman presented to our dental hospital with a 1-weekʼs history of continuous hemorrhage from the gingiva, after she underwent periodontal treatment at a private dental office. She had no history of systemic disease or bleeding tendency. The percentage of teeth with a probing depth (PD) of ≧4 mm was 15.5%. PD ≧6 mm was found in tooth nos. 27, 31, 32, 33, 37, 44 and 47. The BOP was 70.8% in the ovulatory phase, while it was only 27.8% in the follicular phase; on the other hand, the PCR remained unchanged at 50.0%. We performed periodontal initial therapy when the levels of the sex hormones were low. Improvement of the clinical parameters was found at the time of reevaluation in the ovulatory phase [PD≧4 mm (0.6%), PCR (26.7%), and BOP (5.4%)]. The periodontium remained in good condition during pregnancy and in the ovulatory phase post-partum. This case shows that self-plaque control should be carefully performed during pregnancy because of the high risk of recurrent periodontitis, and oral hygiene support is especially necessary in the post-partum phase,considering the patientsʼ lifestyle. Nihon Shishubyo Gakkai Kaishi (J Jpn Soc Periodontol) 55(4)：349-356, 2013.
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  • A case of localized chronic periodontitis in a patient with IgA nephropathy
    Sayuri Itou
    2014 Volume 55 Issue 4 Pages 357-365
    Published: March 28, 2014
    Released on J-STAGE: April 10, 2014
    DOIhttps://doi.org/10.2329/perio.55.357
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    IgA nephropathy is a form of chronic glomerulonephritis that is reportedly associated with chronic intraoral infection. Here, we report the case of a 50-year-old female with chronic localized periodontitis and IgA nephropathy who underwent treatment for 4 years and is currently undergoing supportive periodontal therapy (SPT). The patient presented with gingival redness, swelling, and occasional pyorrhea. We considered the possibility of her periodontal condition being associated with the IgA nephropathy and planned treatment accordingly. Our treatment plan comprised intensive control of the periodontal tissue inflammation. Teeth nos. 12 and 35 were extracted because of the difficulty in achieving inflammation control in these teeth and the severity of the surrounding tissue destruction. Considering the effects of the treatment for IgA nephropathy, we devised a minimally invasive treatment plan that primarily included initial periodontal therapy. Antibiotic prophylaxis was administered prior to scaling and root planing. Tooth no. 47 was transplanted into the position of tooth no. 46 to improve the masticatory function. Although her periodontal condition worsened after the administration of steroids for the treatment of IgA nephropathy and of female hormones for menopausal disorder, periodic SPT and strict plaque control resulted in significant improvement, and at present, she continues to maintain a good periodontal state. Her renal function is also stable currently, and she is under annual medical follow-up. Continuing periodic SPT and strict plaque control while monitoring the patientʼs general health and renal function is important to prevent aggravation of the periodontitis, which may lead to recurrence of IgA nephropathy. Nihon Shishubyo Gakkai Kaishi (J Jpn Soc Periodontol) 55(4)：357-365, 2013.
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Educational Award
  • “Research for Life Dental Science” Which Stimulates Dental Studentsʼ Research Minds
    Satoshi Sekino, Hitomi Ishiguro, Tomoyuki Nakada, Yukihiro Numabe
    2014 Volume 55 Issue 4 Pages 366-370
    Published: March 28, 2014
    Released on J-STAGE: April 10, 2014
    DOIhttps://doi.org/10.2329/perio.55.366
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    At Nippon Dental University, there are students enrolled in” “Research for Life Dental Science,”which practices research and investigation. Out of all the students, a lecture about research was delivered to seven second grade students of the life department of dentistry assigned to the periodontics domain. The “Effect of Dentifrice on Plaque Formation” was decoded as the subject of the research, and the plaque-inhibiting effect of a cosmetic dentifrice and an unregulated drug dentifrice (CPC combination) was compared in the first half (April-September, 2011) ― it was a randomized controlled study (Research 1). The results revealed no difference between the two dentifrices. After discussing the result, the protocol was corrected and the effect of CPC containing mouth rinse was compared with a placebo in the second half (October, 2011- January, 2012) on the “The Effect of Mouth Rinse on Plaque Formation”― this was also a randomized controlled study (Research 2). The results revealed a significant plaque-inhibiting effect of CPC containing mouth rinse. After a thorough discussion of the limitations of Research 1, some improvements were suggested, and, it was thought that the results of Research 2 was improved as a result of raising the quality of the research. To employ this experience efficiently and to contribute to the development of the quality of future dental care is desired. Nihon Shishubyo Gakkai Kaishi (J Jpn Soc Periodontol) 55(2)：366-370, 2013.
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Dental Hygienist
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