Background: Mangrove crab production produces crab shell waste as much as 75% of the total production. The chitin content in crab shells can be utilized as a raw material for chitosan. Chitosan combined with xanthan gum can be used as raw material for making periodontal films. Objective: To determine the characteristics of chitosan (Scylla serrata) film with xanthan gum thickener as a drug deli…