dentistnorthhollywoodca.com In this video Dr. Kamran Sahabi dentist in North Hollywood, CA shares his knowledge of the dental post. A dental post is used to give the tooth strength and structure where there has been loss of tooth structure due or a prior root canal. Prior to placing a dental crown, or other dental restorations over a tooth that has been replaced or restored, to ensure longevity and functionality, the use of a dental post is recommended by Dr. Kamran Sahabi.