Hello, I am 20 years old. Honestly, I didnt brushed when I was a kid at all. I started brushing (only in morning) when I was around 13 years old and even then I wasnt cleaning properly at all. When I was 15, dentist told me to have a cleaning done because of the calclus. So now in May I started feeling that my teeth are loose (all of my teeth) and they became sensitive for the first time in my life. So I visited dentist and he cleaned my teeth. He told me because of calclus it is normal for the teeth to become loose. He suggested me to use an astringent for few weeks (I only used it for 5 or 6 days) and told me to use synsodyme for few weeks. In July I was still feeling loose teeth and I visited him again, he told me my teeth are perfect. In Nov again (this month) I visited again and he told me that they are perfect and there is no mobility. I shown him white color hard deposit on my back tooth and he told me that we might need a cleaning again next year. He told me some of my front gum are red, but thats because of little white deposit and I shown brush regularly. Regarding the mobility, he told me he can not see any movement at all. But I am sure they do move slightly because I brushed my teeth with an electric oral b 5000 power toothbrush (which costed me around $200) for 3 times in total and I felt that my teeth became very loose. If I floss I think movement increases. If I mouthrinse with oral b mouthwash having Hydrogen peroxide, I think movement increases. if I use whitestrips, I think movement increases as well. What should I do about this slight movement (which I think increases by using electric toothbrush/floss/mouthwash/whitening strips) which my dentist thinks there is no movement at all. Also, I asked him if I am possible victim of grinding, he simply answered to buy a night guard... I suspect I am night grinding because when I wake up in morning, my law is like locked, if I move, it makes sound in morning. Please help.