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A systematic review and meta-analysis on the effects of crown lengthening on adjacent and non-adjacent sites

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Abstract

Objectives

The objective of the study was to assess the impact of periodontal crown lengthening surgery on clinical parameters at adjacent and non-adjacent sites compared to treated sites.

Material and methods

An electronic search was carried out on MEDLINE-PubMed, The Cochrane Library, and ISI Web of Science databases between 1978 and 2015. Methodological quality assessment was based on Cochrane recommendations. Meta-analyses were assessed with RevMan 5.0 and heterogeneity between studies by the Higgin test (I 2). Clinical attachment level (CAL) and probing depth (PD) were the primary outcome variables. Four case series studies were included and three in the meta-analysis. All studies showed high risk of bias.

Results

The surgery promoted significant changes in treated, adjacent, and non-adjacent sites. There were greater changes in PD (mean difference −0.14, 95 % CI −0.18 to −0.10, p < 0.00001) and CAL (mean difference 0.16, 95 % CI 0.13 to 0.20, p < 0.00001) in treated sites when compared to adjacent and non-adjacent sites for PD (mean difference −0.09, 95 % CI −0.12 to −0.05, p < 0.00001) and CAL (mean difference 0.91, 95 % CI 0.87 to 0.94, p < 0.00001).

Conclusion

Crown lengthening surgery results in changes of clinical parameters in treated, adjacent, and non-adjacent sites.

Clinical relevance

Clinical and esthetic alterations on the adjacent/non-adjacent teeth can lead to clinical and esthetic alterations, which must be considered in surgical planning.

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Authors and Affiliations

  1. Federal University of Rio Grande do Norte, João Alves Flor St, 983, Candelária, Natal, RN, 59066-120, Brazil

    Cintia Mirela Guimaraes Nobre

  2. Universidade Federal do Rio Grande do Norte, Senador Salgado Filho Ave., 1787, Lagoa Nova, Natal, RN, 59056-000, Brazil

    Ana Luisa de Barros Pascoal, Patricia dos Santos Calderon, Ana Rafaela Luz de Aquino Martins & Bruno César de Vasconcelos Gurgel

  3. São Paulo University, Professor Lineu Prestes Butantã Ave., São Paulo, SP, 05508000, Brazil

    Emmanuel Albuquerque Souza

  4. Univesity of Florida, 1395 Center Drive, PO Box 100434, Gainesville, FL, 32610, USA

    Luciana Machion Shaddox

Authors
  1. Cintia Mirela Guimaraes Nobre
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  2. Ana Luisa de Barros Pascoal
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  3. Emmanuel Albuquerque Souza
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  5. Patricia dos Santos Calderon
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  6. Ana Rafaela Luz de Aquino Martins
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  7. Bruno César de Vasconcelos Gurgel
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Corresponding author

Correspondence to Bruno César de Vasconcelos Gurgel.

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Conflict of interest

Author Cintia Mirela Guimaraes Nobre declares that she has no conflict of interest. Author Ana Luisa de Barros Pascoal declares that she has no conflict of interest. Author Emmanuel Albuquerque Souza declares that he has no conflict of interest. Author Luciana Machion Shaddox declares that she has no conflict of interest. Author Patricia dos Santos Calderon declares that she has no conflict of interest. Author Ana Rafaela Luz de Aquino Martins declares that she has no conflict of interest. Author Bruno Cesar de Vasconcelos Gurgel declares that he has no conflict of interest.

Funding

The work has no source of funding.

Ethical approval

This study does not contain any studies with human participants or animals performed by any of the authors.

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For this type of study, formal consent is not required.

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Nobre, C.M.G., de Barros Pascoal, A.L., Albuquerque Souza, E. et al. A systematic review and meta-analysis on the effects of crown lengthening on adjacent and non-adjacent sites. Clin Oral Invest 21, 7–16 (2017). https://doi.org/10.1007/s00784-016-1921-1

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  • DOI: https://doi.org/10.1007/s00784-016-1921-1

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