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Factors influencing the outcome of non‐surgical periodontal treatment: a multilevel approach

Tomasi, Cristiano, Leyland, Alastair H., Wennström, Jan L.·2007·Journal of Clinical Periodontology

Abstract

Aim: To investigate, by means of multilevel analysis, factors that may affect the short‐term clinical outcome of non‐surgical periodontal treatment. Materials and Methods: Forty‐one patients randomly assigned to two protocols of non‐surgical therapy were included. The impact of different covariates on the probability of “pocket closure” [i.e. probing pocket depth (PPD)4 mm] was explored using a logistic multilevel model. The impact on the final PPD was explored using a continuous multilevel model. Results: The logistic model revealed a significant impact of smoking (p<0.001), presence of plaque at the site (p<0.001) and location of the pocket at a multi‐rooted tooth (p<0.001). The model explained 44% of the total variability. Of the unexplained variance, 19% was attributed to inter‐patient variability. The continuous model revealed the same factors to be significant and an additional significant impact of interactions between the covariates. The R2 was 0.50 and the random slopes model revealed an increase in the variability of the final pocket depth with an increase in the initial PPD. Conclusion: Smoking habits, plaque at site level and tooth type were significant factors in determining the short‐term clinical outcome of non‐surgical periodontal treatment.

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Metadata

Authors
Tomasi, C., Leyland, A. H., & Wennström, J. L.
Venue
Journal of Clinical Periodontology
Publisher
Wiley
Published
2007-07-17
Volume
34
Issue
8
Pages
682-690
ISSN
  • 0303-6979 (ISSN-L)
  • 1600-051X
OpenAlex
W2122602979
Cited by
158
References
1
FWCI
3.97
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Factors influencing the outcome of non‐surgical periodontal treatment: a multilevel approach. https://app.cochat.ai/papers/10.1111/j.1600-051x.2007.01111.x
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Tomasi, C., Leyland, A. H., & Wennström, J. L. (2007). Factors influencing the outcome of non‐surgical periodontal treatment: a multilevel approach. Journal of Clinical Periodontology. https://doi.org/10.1111/j.1600-051x.2007.01111.x

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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