Composite Restoration (posterior) 4 Surfaces: Code D2394. A posterior composite restoration with 4 surfaces refers to a dental procedure where a tooth is restored using a tooth-colored composite resin material. The restoration is done on the back teeth, which are the premolars and molars.

Orthodontics is a dental specialty focused on aligning your bite and straightening your teeth. You might need to see an orthodontist if you have crooked, overlapped, twisted or gapped teeth. Common orthodontic treatments include traditional braces, clear aligners and removable retainers.