In this task, you're given a review from Amazon. Your task is to generate a rating for the product on a scale of 1-5 based on the review. The rating means 1: extremely poor, 2: poor, 3: neutral, 4: good, 5: extremely good.

I wish these would have worked. I bought them in hopes they would help with my nighttime clenching and grinding. I ruined the first guard when I tried to shape it. It curled up so fast and I didn't try to use it. I'm glad I trialed the shaping part with the smaller size. The second one I have yet to get it right. I've tried to reshape it multiple times but I just can't get any relief. I'll keep trying but only because I just can't afford the $300 guard from the dentist.
2