Dental resorption refers to the loss of dental hard tissues, specifically dentine, cementum, or bone, due to clastic activities. This process can be classified into physiologic and pathologic categories.
1. Types of Resorption
1.1 Physiological Resorption
Affects only milk (deciduous) teeth.
It precedes the natural replacement of teeth.
1.2 Pathological Resorption
Can affect both milk and permanent teeth.
If left untreated, will lead to premature loss of the affected teeth.
2. Pathomechanism of Resorption
Damage to:
Precmentum and cementoblasts causes external resorption.
Predentin and odontoblasts leads to internal resorption.
Local inflammation is marked by the presence of granulation tissue containing clastic cells:
Osteoclasts: Multinucleated giant cells responsible for bone resorption.
Types of clastic cells include osteoclasts (bone), cementoclasts (cementum), and odontoclasts (dentin).
Mechanical irritation, such as pressure, may also be a contributing factor.