Experimental Investigation of Ventilation Efficiency in a Dentistry Surgical Room Majeed Olaide Oladokun, Maisarah Ali, Samsul Bahrin Osman, Niza Samsuddin and Hairul Aini Hamzah MATEC Web Conf., 66 (2016) 00115 Published online: 13 July 2016 DOI: 10.1051/matecconf/20166600115