Table 1. Bacteriologic and mycological findings in maxillary sinus after 4 weeks experiments

	NC (5)	sZO+PBS (6)	wZO+PBS (7)	sZO+Asp (7)	wZO+Asp (7)
Bacterial
No growth	1	3	6	5	5
Bordetella bronchiseptica	3	3	1	2	0
Others	1	0	0	0	0
Fungal
No growth	5	6	6	1	1
Aspergillus	0	0	1	6	6

NC: negative control, sZO: without zinc oxide, wZO: with zinc oxide, PBS: phosphate buffer saline, Asp: Aspergillus fumigatus.