Stomatology ›› 2024, Vol. 44 ›› Issue (1): 31-35.doi: 10.13591/j.cnki.kqyx.2024.01.007

• Basic and Clinical Research • Previous Articles     Next Articles

Distribution of periodontal pathogens in carotid atherosclerotic plaques with different degrees of carotid artery stenosis

TANG Lu1,XUE Dong1,YANG Wenwen1,ZHANG Xianli1,LU Xia2,ZHAO Ying1()   

  1. Department of Dentistry, Xuanwu Hospital, Capital Medical University, Beijing 100053, China
  • Received:2023-06-09 Online:2024-01-28 Published:2024-01-22

Abstract:

Objective To detect the distribution of periodontal pathogens in atherosclerotic plaque and subgingival plaque in patients with different degrees of carotid artery stenosis. Methods Fifty patients requiring carotid endarterectomy were selected and divided into severe stenosis group (36 cases) and complete occlusion group (14 cases) according to the degree of carotid artery stenosis. The distribution of five periodontal pathogens Actinobacillus actinomycetemcomitans (A. actinomycetemcomitans), Tanerella forsythia (T. forsythia),Treponema denticola (T. denticola), Fusobacterium nucleatum (F. nucleatum), Porphyromonas gingivalis (P. gingivalis) was detected by 16S rRNA PCR. Results The detection rates of P. gingivalis, T. denticola,T. forsythia and F.nucleatum in carotid atherosclerotic plaques in patients with complete occlusion were 71.4%, 64.3%, 42.9% and 14.3%, which were higher than those in patients with severe stenosis, and there were significant differences in the detection rates of P.gingivalis and T.denticola(P<0.05). A.actinomycetemcomitans was not detected in the plaques of the complete occlusion group, which was lower than that in the severe stenosis group, but the difference was not statistically significant. The detection rates of P. gingivalis, T. denticola and T. forsythia in subgingival plaque in patients with complete occlusion were 85.7%, 71.4% and 64.3%, which were also higher than those in patients with severe stenosis, but there was no statistical significance (P>0.05). In addition, the detection rates of P.gingivalis, T.denticola, and T.forsythia in carotid atherosclerotic plaques and subgingival plaques were significantly higher than those of F.nucleatum and A.actinomycetemcomitans (P<0.05). Conclusion The distribution of P.gingivalis, A.actinomycetemcomitans, F.nucleatum, T.denticola, and T.forsythia is different in carotid atherosclerotic plaque and subgingival plaque. The detection rates of P.gingivalis and T.denticola in carotid atherosclerotic plaques in patients with total carotid artery occlusion are significantly higher, which may be closely related to the severity of carotid atherosclerosis.

Key words: carotid atherosclerosis, periodontal pathogens, periodontitis, subgingival plaque, plaque

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