Cristiano Tomasi1, Alastair H Leyland, Jan L Wennström. 1. Department of Periodontology, Institute of Odontology, The Sahlgrenska Academy at Göteborg University, Sweden. cristiano.tomasi@odontologi.gu.se
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)<or=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 R(2) 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.
RCT Entities:
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)<or=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 R(2) 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.
Authors: Jonathan Meza-Mauricio; David Soto-Peñaloza; David Peñarrocha-Oltra; Jose Maria Montiel-Company; Daiane Cristina Peruzzo Journal: Clin Oral Investig Date: 2018-06-12 Impact factor: 3.573
Authors: James Rudolph Collins; Gabriel Ogando; Rolando González; Elena Figuero; María José Marín; Mariano Sanz; David Herrera Journal: Clin Oral Investig Date: 2022-02-05 Impact factor: 3.573