牙科科学与医学杂志

抽象的

Novel Nano-systems to Enhance Biological Activity of Hydroxyapatite against Dental Caries

Madeleine Souza das Chagas

Shape improvement resulted during a shovel-shaped cavity preparation and a pontic with fibers placed close to the occlusal surface of the connection region. With the optimized cavity preparation solely, the utmost principal stress inside the restoration and also the tooth structure was reduced from 639.4 MPa to 525.4 MPa and from 381.7 MPa to 352.8 MPa, severally. With the embedded fibers, the shovel-shaped cavity preparation reduced the utmost surface tensile stress by roughly seventieth (conventional: 189.6 MPa versus optimized: 57.0 MPa) and also the peak most principal stress of the veneering composite organic compound by forty fifth (conventional: 638.8 MPa versus optimized: 356.5 MPa). The height most principal stress was conjointly reduced for the remaining tooth structure by roughly halfhour (conventional: 372.2 MPa versus optimized: 253.1 MPa). Shape improvement determined that a shovel-shaped retainer with fibers placed close to the occlusal surface of the connection space will conjointly cut back the surface and structural stresses of the 2-unit cantilevered fiber-reinforced RBFDP. This might provide a lot of conservative treatment possibility for replacement one missing tooth.