Composite fillings are typically installed in one session. Your dentist will remove decay as needed. The area will next be completely cleaned and prepared before the new infill is installed. If the decay occurred close to the nerve of the tooth, a specific drug will be used to provide additional protection. After that, the composite filling will be precisely put in, shaped, and polished, returning your tooth to its original shape and function. It is typical to have sensitivity to warmth and cold when composite fillings are first placed, but this will fade quickly as your tooth adjusts to the new filling. Good oral hygiene, dietary habits, and regular dental visits will all help your new fillings last longer.