Which of the following is the most probable postoperative complication of intracoronal bleaching a tooth that has not been adequately obturated?

1 explanations

1. 

   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

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