Diederik Hentenaar

96 Chapter 4 6 the presence of Aggregatibacter actinomycetemcomitans ( Aa ), Porphyromonas gingivalis (Pg ), Prevotella intermedia (Pi) , Tannerella forsythia (Tf) , Fusobacterium nucleatum (Fn) , Parvimonas micra (Pm) , Treponema denticola (Td) , and Filifactor alocis (Fa) before non-surgical intervention (Tpre), 3 months after the non-surgical intervention/before the surgical intervention (Tpost/ T0) and 12 months after the surgical intervention (T12) Figure 3. Percentage of patients (%) with positive periodontal samples in test and control group for the presence of Aggregatibacter actinomycetemcomitans (Aa), Porphyromonas gingivalis (Pg), Prevotella intermedia (Pi), Tannerella forsythia (Tf ), Fusobacterium nucleatum (Fn), Parvimonas micra (Pm), Treponema denticola (Td), and Filifactor alocis (Fa) before non-surgical intervention (Tpre), 3 months after the non-surgical intervention/before the surgical intervention (Tpost/ T0) and 12 months after the surgical intervention (T12) Treatment success According to the success criteria applied, a total of 18 implants (19.1%) showed a successful treatment outcome at 12 months after surgery. Success was achieved for 13 implants (32.5%) in the test group and 5 implants (12.5%) in the control group. The overall survival rate (i.e. presence of patients/implants at T12, no explantation) was 81.9% and 74.0% at implant level and at patient level, respectively.