Patients should have at least 12 teeth present 
Patients with Moderate to Advanced Chronic periodontitis 
Patients with 2 or more interproximal sites (not on same tooth) with probing pocket depths of 5mm or more and 2 or more interproximal sites (not on same tooth)of probing attachment loss of 4mm or more which bled on probing. 

NCT02208739_inc_T1
Condition
Chronic periodontitis
NCT02208739_inc_T2
Qualifier
Advanced
NCT02208739_inc_T3
Qualifier
Moderate
NCT02208739_inc_T4
Scope
Moderate to Advanced
NCT02208739_inc_T5
Condition
teeth present
NCT02208739_inc_T6
Multiplier
at least 12
NCT02208739_inc_T7
Multiplier
2 or more
NCT02208739_inc_T8
Condition
interproximal sites with probing pocket depths of 5mm or more
NCT02208739_inc_T9
Value
5mm or more
NCT02208739_inc_T10
Multiplier
2 or more
NCT02208739_inc_T11
Condition
interproximal sites of probing attachment loss of 4mm or more
NCT02208739_inc_T12
Value
4mm or more
NCT02208739_inc_T13
Qualifier
bled on probing
NCT02208739_inc_T14
Procedure
probing