A.a	Aggregatibacter actinomycetemcomitans
A.o	Actinomyces odontolyticus
A.v	Actinomyces viscosus
BOP	Bleeding on probing
C.c	Campylobacter concisus
C.g	Campylobacter gracilis
C.r/C.sh	Campylobacter rectus/showae
C.s	Capnocytophaga species
E.c	Eikenella corrodens
E.n	Eubacterium nodatum
F.n	Fusobacterium nucleatum
OHI-S	Simplified Oral Hygiene Index
PCR	Polymerase Chain Reaction
PD	Probing depth
P.g	Porphyromonas gingivalis
P.i	Prevotella intermedia
P.m	Peptostreptococcus micros
P.n	Prevotella nigrescens
S.c	Streptococcus constellatus
S.g	Streptococcus gordonii
S.m.g	Streptococcus mitis group
T.d	Treponema denticola
T.f	Tannerella forsythensis
V.p	Veillonella parvula