TABLE 2.

The Dominant OTUs in AB group compared to PC group at patient level.

OTUs	Patients (Radio)
Greater than 10% higher in AB group than in PC group
Porphyromonas gingivalis W83	8 (40%)
Prevotella_uncultured bacterium	3 (15%)
Prevotella intermedia	2 (10%)
Streptococcus constellatus subsp. constellatus	2 (10%)
Fusobacterium_uncultured bacterium	2 (10%)
Porphyromonas_Unclassified	2 (10%)
Porphyromonas gingivalis TDC60	1 (5.0%)
Prevotella heparinolytica	1 (5.0%)
[Eubacterium] brachy	1 (5.0%)
Fusobacterium_uncultured organism	1 (5.0%)
Leptotrichiaceae_Unclassified	1 (5.0%)
Porphyromonas_uncultured organism	1 (5.0%)
Prevotella 1_Unclassified	1 (5.0%)
Rikenellaceae RC9 gut group_uncultured bacterium	1 (5.0%)
Streptococcus_uncultured bacterium	1 (5.0%)
Tannerella_Unclassified	1 (5.0%)
Treponema 2_Unclassified	1 (5.0%)
Treponema 2_uncultured Treponema sp.	1 (5.0%)
Treponema 2_uncultured bacterium	1 (5.0%)
Greater than 10% lower in AB group than in PC group
Streptococcus_uncultured bacterium	6 (30%)
Actinomyces_uncultured bacterium	3 (15%)
Lautropia_uncultured bacterium	3 (15%)
Neisseria_Unclassified	3 (15%)
Veillonella_uncultured bacterium	3 (15%)
Prevotella intermedia	2 (10%)
Bacteroides neonati	2 (10%)
Fusobacterium_uncultured bacterium	2 (10%)
Porphyromonas gingivalis W83	1 (5.0%)
Bergeriella denitrificans	1 (5.0%)
Treponema 2_Unclassified	1 (5.0%)
Capnocytophaga_uncultured bacterium	1 (5.0%)
Corynebacterium_uncultured bacterium	1 (5.0%)
Fretibacterium_Unclassified	1 (5.0%)
Gemella_uncultured bacterium	1 (5.0%)
Haemophilus_uncultured bacterium	1 (5.0%)
Lentimicrobiaceae_uncultured bacterium	1 (5.0%)
Neisseria_uncultured bacterium	1 (5.0%)
Porphyromonas_uncultured bacterium	1 (5.0%)
Streptococcus_Unclassified	1 (5.0%)

The dominant different abundance of OTU was set as 10%.