The hex of the 5x4(3) mm abutment is worn duo to incomplete seating (abnormal pressure), but still works clinically in several cases.  Now we are going to show in bench.

Thin Septum  Fixture Hex Last  Next  连接示意图

Xin Wei, DDS, PhD, MS 1st edition 12/20/2018, last revision 03/14/2021