Periodontal Plastic Surgery ( PPS ) techniques applying grafts underneath CAF with or without the adding of EMD are associated with improved aesthetics assessed by final patient perception and RES as professional evaluation system
BACKGROUND The aim of this study was to perform a systematic review ( SR ) of r and omized controlled trials ( RCTs ) to explore if periodontal plastic surgery procedures for the treatment of single and multiple gingival recessions ( Rec ) may improve aesthetics at patient and professional levels .
Combination of direct and indirect evidence in mixed treatment comparisons.
Mixed treatment comparison ( MTC ) meta- analysis is a generalization of st and ard pairwise meta- analysis for A vs B trials , to data structures that include , for example , A vs B , B vs C , and A vs C trials . There are two roles for MTC : one is to strengthen inference concerning the relative efficacy of two treatments , by including both ' direct ' and ' indirect ' comparisons . The other is to facilitate simultaneous inference regarding all treatments , in order for example to select the best treatment . In this paper , we present a range of Bayesian hierarchical models using the Markov chain Monte Carlo software WinBUGS . These are multivariate r and om effects models that allow for variation in true treatment effects across trials . We consider models where the between-trials variance is homogeneous across treatment comparisons as well as heterogeneous variance models . We also compare models with fixed ( unconstrained ) baseline study effects with models with r and om baselines drawn from a common distribution . These models are applied to an illustrative data set and posterior parameter distributions are compared . We discuss model critique and model selection , illustrating the role of Bayesian deviance analysis , and node-based model criticism . The assumptions underlying the MTC models and their parameterization are also discussed
Periodontal Plastic Surgery ( PPS ) techniques applying grafts underneath CAF with or without the adding of EMD are associated with improved aesthetics assessed by final patient perception and RES as professional evaluation system
BACKGROUND The aim of this study was to perform a systematic review ( SR ) of r and omized controlled trials ( RCTs ) to explore if periodontal plastic surgery procedures for the treatment of single and multiple gingival recessions ( Rec ) may improve aesthetics at patient and professional levels .