How much reduction in strength and toughness in endodontically treated molars is attributed to changes in collagen cross-linking and dehydration of dentin?

 # How much reduction in strength and toughness in endodontically treated molars is attributed to changes in collagen cross-linking and dehydration of dentin?

A. 5 %

B. 14 %

C. 21 %

D. 60 %

The correct answer is B. 14 %.

There is almost a 14 % reduction in toughness in endodontically treated molars compared with vital dentin due to changes in collagen cross-linking and dehydration of dentin. 

Ref: Cohen 10th Edition , Page 462