I am 74 Years-old, Vietnamese American, cancer survival, tonsil cancer 6 years ago. After surgery and radiation treatment for it, my mouth produced less saliva. No taste and terribly dry. My natural teeth were weaker and the color was darker compared with my other implanted teeth. I felt very unhappy about it.For 2 years, I handed around with several big dentistry’s, met some famous, senior Dentist in USA, to consult about that, with expect, to pay extra for it if they could help to improve my teeth for chewing and making better it’s looking. But all of them said "Can't do it. And advice "Should do "deep cleaning every 3 months for maintenance", 290$/each/deep cleaning, It is the best they can do.etc...When I first met Thu Thuy, DDS, She said she could help me all, what I said about my teeth for one week, with reasonable price.