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Ridge preservation in maxillary molar extraction sites with severe periodontitis: a prospective observational clinical trial

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Abstract

Objectives

To assess alveolar bone changes and treatment modality alterations after ridge preservation on maxillary molar extraction sockets with severe periodontitis, compared to natural healing.

Material and methods

Thirty-six maxillary infected-molar teeth either receiving ridge preservation (RG group) or undergoing natural healing (NT group) were investigated. Cone-beam computed tomography (CBCT) scanning was performed immediately after surgery (the baseline) and repeated 6 months later to measure the linear and volumetric changes of the sockets.

Results

Based on radiographic measurements, alveolar bone width decreased by 1.58 ± 4.61 mm in the NT group but increased by 3.74 ± 4.17 mm in the RG group (p < 0.05). Significant increases in ridge height at the center of both the NT (7.54 ± 4.54 mm) and RG (9.20 ± 3.26 mm) groups were observed. Mean sinus pneumatization was 0.19 ± 0.45 mm in the RG group and 0.59 ± 0.63 mm in the NT group (p < 0.05). The relative increase in total ridge volume was 8.0% and 35.5% in the NT and RG group, respectively (p < 0.05). Implant placement with additional sinus augmentation procedure was performed in 16.7% of the RG group cases, whereas 50% in the NT group cases.

Conclusions

Ridge preservation in the maxillary molar extraction sockets with severe periodontitis can improve alveolar ridge dimensions and decrease the necessity of advanced regenerative procedures at implant placement compared to natural healing.

Clinical relevance

Ridge preservation on maxillary molar extraction sockets with severe periodontitis maintained the vertical bone height more efficiently and resulted in less need for sinus augmentation procedures at 6 months compared to natural healing.

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Acknowledgements

We thank Dr. Joelle Moussi for editorial assistance with the manuscript.

Funding

This study was supported in part by the Capital foundation for Clinical Characteristics and Application Research, Grant #Z161100000516042; the Capital Medical Development and Research Fund, PRC (2011-4025-04); and the Peking University Clinical Scientist Program (BMU2019LCKXJ010).

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Authors and Affiliations

  1. Department of Periodontology, Peking University School and Hospital of Stomatology, National Clinical Research Center for Oral Disease, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, 22 Zhongguancun Avenue South, Haidian District, Beijing, 100081, People’s Republic of China

    Yiping Wei & Wenjie Hu

  2. Department of Emergency, Peking University School and Hospital of Stomatology, National Clinical Research Center for Oral Disease, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, China

    Tao Xu & Liping Zhao

  3. Department of Restorative Dentistry, University of Washington, Seattle, WA, USA

    Kwok-Hung Chung

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  1. Yiping Wei
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  2. Tao Xu
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  3. Liping Zhao
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  4. Wenjie Hu
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  5. Kwok-Hung Chung
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Corresponding author

Correspondence to Wenjie Hu.

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Ethics approval and consent to participate

This prospective study was registered at Chinese Clinical Trial Registry (ChiCTR-ONN-16009433) and approved by the Institutional Review Boards of the University Medical Ethics Committee (Approval Number: PKUSSIRB-201310068). Written informed consent was obtained from all participants following the guidelines of the committee for the research process.

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The authors declare no competing interests.

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Wei, Y., Xu, T., Zhao, L. et al. Ridge preservation in maxillary molar extraction sites with severe periodontitis: a prospective observational clinical trial. Clin Oral Invest 26, 2391–2399 (2022). https://doi.org/10.1007/s00784-021-04204-z

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  • DOI: https://doi.org/10.1007/s00784-021-04204-z

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