I'm very unhappy with my dentist and was wondering, what sort of hygienic things a dentist is supposed to do?

Be Clean!: If, by hygienic, you are referring to how the dentist practices infection control, masks, protective eyewear are considered standard these days. The operatories should be disinfected between patients. The instruments should be thoroughly cleansed and sterilized after each use. I am never offended if patients want to understand or see my daily procedures for such steps. Ask about their procedures.

OSHA Standards: There are standards for cleanliness between and during patient visits. The dentist must follow the national osha standards, and use universal precautions in treating patients. These standards involve sterilization techniques, and clinically clean operatories. It also involves gloves, masks, & eye protection for practioners & more...

It depends: If he has a hygenist then he can diagnose the kind of cleaning and any work needed if you are not happy , you can get a second opinion.