If you get the first molar removed then second molar will further move forward. The movement of second molar is not because of pulling of wisdom tooth but because of decay of first molar. So it is better to get the first molar treated / restored and the treatment of first molar depends on extent of decay. It can either filled or Root Canal Treated. If you get the first molar pulled out then there will be problem in chewing of food as this is the key tooth for chewing.
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