Journal of Oral Science Research ›› 2023, Vol. 39 ›› Issue (2): 168-173.DOI: 10.13701/j.cnki.kqyxyj.2023.02.016

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Effects of Proximal Margin Elevation for Posterior Teeth on Periodontal Health

JING Yao1,2, WU Fei1,3, XIAO Mo1, QIAO Feng4, YUAN Yuan5, GUO Honglei5, PEI Haiyan6, MIAO Hui6, WU Ligeng1*   

  1. 1. Department of Endodontics, Stomatological Hospital of Tianjin Medical University, Tianjin 300070, China;
    2. Department of Endodontics, The Affiliated Stomatological Hospital of Xuzhou Medical University, Xuzhou 221000, China;
    3. Department of General Dentistry Division 1, Yantai Stomatological Hospital Affiliated to Binzhou Medical College, Yantai 264001, China;
    4. Department of Oral and Maxillofacial Surgery, Stomatological Hospital of Tianjin Medical University, Tianjin 300070, China;
    5. Department of Periodontology, Stomatological Hospital of Tianjin Medical University, Tianjin 300070, China;
    6. Department of Stomatology, Wuqing District People's Hospital, Tianjin 301700, China
  • Received:2022-07-22 Online:2023-02-28 Published:2023-02-20

Abstract: Objective: To observe the effect of proximal margin elevation on periodontal probing bleeding in patients with deep subgingival caries by using different gingival wall treatments and matrix systems. Methods: Thirty-six cases with deep subgingival caries were treated with gingival retraction, electrosurgical gingivotomy, and flap surgery, respectively to elevate the subgingival defect above the gingiva and complete the direct filling with composite resin. Three months after the treatments, the patients were examined the bleeding on probing (BOP). The effects of gender, age, tooth type, type of matrixs, pulp vitality, and treatment on BOP were preliminary determined by univariate analysis and optimal scale. Unconditional logistic regression model was established to screen the factors affecting BOP. Results: The type of matrixs affected BOP (P=0.009): the bleeding rate of personalized trimmed Ivory matrix was higher than that of segmented matrix. Age, gender, tooth type, pulp vitality, and treatment had no significant effect on BOP (P>0.05). Conclusion: The type of matrixs affect BOP. Gingival retraction, electrosurgical gingivotomy, and flap surgery had no significant effect on BOP.

Key words: proximal margin elevation, deep caries, probing bleeding, periodontal health