PERFECT PEGS Posterior (Set of 6) Perfect Pegs, ceramic firing pegs, hold crowns and bridges in place in a porcelain furnace. They provide stability and allow for close placement. Perfect Pegs are excellent for use with Emax and Zirconia restorations. Perfect Pegs Advantages: Excellent for use with Emax and Zirconia restorations; Allow close placement for crowns & bridges; Provide stability; Can be fired up to 2200° F; Come in 3 different shapes.