Which of the following is the most probable postoperative complication of intracoronal bleaching a tooth that has not been adequately obturated?
Discolouration
Acute apical periodontitis
Fracture
External cervical root resorption
Retrograde pulpitis.
1 explanations
Honey
http://faculty.ksu.edu.sa/Dr.Hanan/BooksIngle/ch16.pdf
Complications and Adverse Effects to Bleaching
External Root Resorption. Clinical reports34–44 and
histologic studies30,31,45 have shown that intracoronal
bleaching may induce external root resorption (Table
16-3 and Figure 16-9). This is probably caused by the
oxidizing agent, particulary 30 to 35% hydrogen peroxide.
The mechanism of bleaching-induced damage to the
periodontium or cementum has not been fully elucidated.
Presumably, the irritating chemical diffuses via
unprotected dentinal tubules and cementum defects46,47
and causes necrosis of the cementum, inflammation of
the periodontal ligament, and, finally, root resorption.
The process may be enhanced if heat is applied48 or in the presence of bacteria.38,49 Previous traumatic injury
and age may act as predisposing factors.34
Honey