When I contacted Doctor Kara, I had very few teeth and they were in poor condition. As I did not have enough bone on the upper jaw, Dr. Kara suggested the all-on-4 concept for the upper jaw and the cemented concept for the lower jaw. The operation went well. As aesthetics are very important to me, I opted for zirconia for both jaws. At the top I have an all-on-4 prosthesis at the zirconia base and at the bottom I have zirconia crowns. Many thanks to Doctor Kara and his team.