Efficacy of Guided Biofilm Therapy (GBT) for Treatment of Deep Periodontal Pockets.

Periodontal pocket depth (PPD)

the aim of the study is to evaluate the efficacy of guided biofilm therapy (GBT) for
 treatment of deep periodontal pockets.
 
 the objectives are
 
 1- To compare the change in the clinical periodontal parameters and microbiological
 parameters by using real time PCR for P. gingivalis, Aggregatibacter actinomycetemcomitans
 and Filifactor alocis among sites treated by GBT and conventional hand instrumentation after
 a period of 3 months and to assess the level of the selected periodontal pathogens in deep
 periodontal pockets and to estimate and compare deep periodontal pockets which need surgery
 after 3 months of non-surgical treatment by GBT and conventional hand instrumentation.
 
 the hypothesis is whether there are no differences in in the clinical and microbiological
 parameters among sites treated by GBT and conventional hand instrumentation after a period of
 3 months or there are differences in in the clinical and microbiological parameters among
 sites treated by GBT and conventional hand instrumentation after a period of 3 months.
 
 The participants will be selected on a consecutive basis from patients referred to the
 Department of Periodontics, College of Dentistry, University of Baghdad.
 
 For each patient, each site will be randomly assigned to either treatment protocol:
 
 1. Sites treated with GBT.
 
 2. Sites treated with conventional manual instrumentation only.