Table 4.

Number of genus, alpha-diversity index and Good_coverage for bacteria of six groups.

	Specialty	Number of genus	ACE	Chao1	Shannon	Simpson	Good coverage
Group1	Prosthodontic	238	3,417	3,362	6.69	0.961	0.988
Group2	Orthodontics	207	2,763	2,716	6.27	0.963	0.990
Group3	Pediatrics	221	3,414	3,314	6.77	0.971	0.988
Group4	Endodontic	213	2,979	2,879	5.67	0.932	0.989
Group5	Oral surgery	196	3,491	3,318	6.91	0.973	0.989
Group6	Periodontics	208	3,014	2,778	6.58	0.935	0.991