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What is The given instrument is used in which of the following and explain in detail?
Ans. (a) DacryocystorhinostomyRef: Yanoff and Duker, 4/e, p. I486The nose is entered by pushing the instrument through the suture line between the lacrimal bone and the frontal process of the maxilla. Kerrison punches are used to remove the bone between the sac fossa and the nose.