<prompt> Average bond strength in enamel adhesion:5-10 MPa20-50 MPa50-70 MPa70-100 MPa  <response>: Bond strength of enamel is higher than bond strength to dentin.Enamel is 20-50 MPa.Dentin is 15-25 MPa depending on agent used. Reference-Sturdevant 6th ed Pg: 116 