It won't prevent you from needing a deep cleaning (in cases where you actually need it). Deep cleanings are necessary when the inflammation from poor hygiene has caused you to lose bone in your jaw and the pockets underneath the gums have deepened to the point that food is getting stuck in them and hardening (causing more of the inflammation mentioned above). In those cases you need to be numbed to have the hardened food scraped out by a professional.

Do you have a recommendation for one? I'm good about brushing and flossing but I still build up plaque like crazy and have to go every 4 months instead of 6.