Orthodentin

Orthodentin (orthodentinum; ortho- + lat. dens, dentis tooth) is a type of dental tissue formed in place of dentin after pathological processes.

Orthodentin is deposited by odontoblasts to replace dead or damaged dentin. It is formed after inflammatory diseases of the dental pulp, as well as during caries and abrasion of hard dental tissues.

Structurally, orthodentine differs from primary dentin - it lacks dentinal tubules, and collagen fibers are randomly located. This makes orthodentine less durable and resistant to destruction.

The formation of orthodentin is a protective reaction of the body to compensate for the loss of hard tooth tissue. However, orthodentine cannot fully replace the dentin cavity, therefore, if its deposition is significant, dental prosthetics are recommended.