How much reduction in strength and toughness in endodontically treated molars attributed to changes in collagen cross-linking and dehydration of dentin?: (A) 5%, (B) 14%, (C) 21%, (D) 60%
Answer is B. "Almost 14% reduction in toughness in endodontically molars compared with vital dentin due to changes in collagen cross- linking and dehydration of dentin".