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The possibility is evident considering the duration of a space flight to Mars and back could require up to more than five years. The dental concerns of a space mission are only a small part of a much larger team effort; however, it is one not to be overlooked. Recently in India (balwant rai), aeronautic dentistry is evolving:
I recommend regular dental examinations with careful assessment of previous dental restorations in aircrew subject to decompression.