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endodontics - 3 Questions
Loss of Coronal Structure: During endodontic treatment, the coronal portion of the tooth may be significantly altered or reduced, especially if there is extensive decay or if a crown is required after treatment. The loss of tooth structure compromises the tooth's ability to withstand occlusal forces.
Replacement resorption results in ankylosis. This process involves: 1) Loss of periodontal ligament due to trauma or infection, 2) Direct contact between root surface and alveolar bone, 3) Osteoblasts lay down bone tissue directly on root surface, 4) Root dentin is gradually replaced by bone tissue, 5) Tooth becomes fused to surrounding bone (ankylosis). This condition is irreversible and eventually leads to complete replacement of root structure with bone. Pain and periapical abscess are not typical consequences of replacement resorption itself.
Sodium hypochlorite is commonly used as an irrigating solution with ultrasonic instruments in endodontic treatment for its antimicrobial properties. It helps in the cleaning and disinfection of the root canal system by removing organic debris and bacteria. Normal saline, hydrogen peroxide, and chloramine are also used as irrigants, but sodium hypochlorite is the most effective in eliminating bacteria.
MCQ