舌苔中の歯科疾患関連細菌と口腔内状況との関連性  [in Japanese] Relationship between Dental Pathogenic Bacteria in Tongue Coat and Clinical Oral Status  [in Japanese]

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Author(s)

    • 岸 光男 KISHI Mitsuo
    • 岩手医科大学歯学部予防歯科学講座 Department of Preventive Dentistry, Iwate Medical University School of Dentistry

Abstract

85歳高齢者,歯周組織の健全な若年成人(以下,健常者)およびその中間年齢層にあたり,歯周治療後のメインテナンスのために定期受診している者,合計292名から舌苔を採取し,菌種特異的PCR法により,4種の歯周病原性細菌と2種のミュータンスレンサ球菌を検出し,検出率を比較した.また,85歳高齢者と健常者においては歯科疾患関連細菌の検出と口腔内状況との関連を検討した.結果を以下に示す.1.無菌顎者の舌苔からの4種の歯周病原性細菌の検出率は低かった.また,有歯顎高齢者を含むその他の被験者群中では,健常者からのPorphyromonas gingivalis, Treponema denticolaの検出率が有意に低かった.これらより,歯周病に罹患していない者,歯周病感受性がない者の舌苔は,歯周病原性細菌の棲息部位となりにくいことが示された.2.健常者において舌苔と歯垢からの歯科疾患関連細菌の検出状況を比較したところ,T. denticola以外の細菌で,舌苔と歯垢からの検出に関連が認められた.さらに歯周病原性細菌に関しては,舌苔からの検出率が歯垢より高く,いずれか一方から歯周病原性菌が検出された場合には,主として舌苔からであった.これらの結果から,舌苔は口腔他部位への細菌の供給源であると同時に受容部位としても働き,さらに口腔他部位の細菌叢と相互に関連し合って,口腔全体の細菌叢を構成しているものと考えられた.

Tongue coat samples were collected from 292 subjects consisting of 85-year-old individuals, periodontally healthy young adults in their 20^s and middle aged patients who received a regular dental check up for maintenance after periodontal treatment. Four species of periodontopathogens and two species of mutans streptococci were detected from the tongue coat samples using species-specific polymerase chain reaction. Dental plaque samples were also collected from periodontally healthy young adults, and six species were detected similarly. The results were follows: 1. The rate of bacterial detection from dentulous elders was highest in all subjects, on the other hand, that from edentulous elders was lowest in all subjects. 2. There was a significant relationship in that the bacterial species found in the tongue coat were the same as those in the dental plaque. Concerning periodontopathogens except for Treponema denticola, the detection rates from the tongue coat samples were higher than those from the plaque samples. Furthermore, when certain bacterial species were detected from either sample, they were detected from the tongue coat samples in most cases. 3. The detection rate of Streptococcus mutans from the tongue coat samples showed no significant difference. Concerning Streptococcus sobrinus, the detection rate from denture wearing subjects was higher than subjects without dentures. 4. In periodontally healthy young adults, the detection of T. forsythensis, P. intermedia, and S. sobrinus was associated with the amount of tongue coat, which had a strong relationship with a smoking habit From these results, it was suggested that the tongue coat interacted with other niches in the oral cavity, acting as a possible reservoir or receiver, and consequently, it could influence total oral microflora.

Journal

  • JOURNAL OF DENTAL HEALTH

    JOURNAL OF DENTAL HEALTH 56(2), 137-147, 2006

    Japanese Society for Oral Health

References:  35

Cited by:  4

Codes

  • NII Article ID (NAID)
    110004729663
  • NII NACSIS-CAT ID (NCID)
    AN00081407
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    0023-2831
  • NDL Article ID
    7955194
  • NDL Source Classification
    ZS44(科学技術--医学--歯科学・口腔外科学)
  • NDL Call No.
    Z19-144
  • Data Source
    CJP  CJPref  NDL  NII-ELS  J-STAGE 
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