No there is no grace period for the plate sticker. I found this out the hard way. I purchased my city and plate stickers on Friday June 29, 2012. I didn't put them on right away because I kept thinking I'll have them on my vehicle way before July 15th's deadline, no problem. Well today, Tuesday July 3rd I see a ticket on my car.
To successfully complete your orthodontic treatment plan, patients must work together with the orthodontist. The teeth and jaws can only move toward their corrected positions if the patient consistently wears the elastics (rubber bands), headgear or other appliances as prescribed. The following paragraphs describe the types of appliances that may be used during your treatment. Elastics (Rubber Bands) Wearing elastics (rubber bands) is the main way that Orthodontic treatment can improve the fit of your bite. Braces will straighten your teeth, but are unable to correct bite problems unless used in conjunction with elastics.
Many different types of appliances, both fixed and removable, are used to help move teeth, retrain muscles and affect the growth of the jaws. These appliances work by placing gentle pressure on the teeth and jaws. The severity of your problem will determine which orthodontic approach is likely to be the most effective.