Final answer:
Wedges in dental procedures are inserted from either the buccal or lingual surface depending on accessibility and dentist preference.
Step-by-step explanation:
Wedges are typically used in dental procedures to separate the teeth and protect the adjacent teeth and gums when a filling is placed. While not detailed in the information provided, wedges are usually inserted from the side that grants the best access and visibility to the tooth being worked on, which can be either the buccal or the lingual surface, depending on the specific situation and preference of the dental practitioner.