Is it ok for a dentist to reuse his face mask?

Dental health-care personnel should wear a surgical mask that covers both their nose and mouth during procedures and patient-care activities that are likely to generate splashes or sprays of blood or body fluids. A surgical mask protects the patient against microorganisms generated by the wearer and also protects dental health care personnel from large-particle droplet spatter that may contain bloodborne pathogens or other infectious microorganisms. When a surgical mask is used, it should be changed between patients or during patient treatment if it becomes wet.