Posterior Bite Plate with Two Clasps

Appliance Purpose / Function:

• Acrylic Plate
• Posterior Bite Plate
• Two clasps of your choice

Suggested Materials:

• Wire: Stainless-Steel wire or Chromium Cobalt

Options:
Finger Springs
Expansion Screws
Habit Cribs or Tongue Toys

Appliance Fabrication Standards:
Properly formed clasps for good retention. Wires crossing the occlusion can be left a little high so acrylic can encompass them making a stronger appliance. The models should be articulated and the blocks trimmed so they occlude evenly with the opposing dentition.

Clasping-

• Properly formed clasps for good retention.
• Clasping must fit tightly into embrasure with no space underneath. If 2nd molars are not present, the wire must fit snugly against the tissue to the distal of the first molars and extend over the patient’s alveolar ridge and into the palate where the acrylic is to be
• A 5mm foot must be bent on the end of the wire for acrylic retention.

Palatal Acrylic-

• Uniform overall thickness of approximately 2mm except in bite plate area (The models should be articulated and the bite plate trimmed to occlude evenly with the opposing teeth.)
• Bite plate must be built up in anterior region to approximately level with the incisal edge of the anteriors (unless otherwise specified by Client), and must be a flat, level surface
• All wires and inlay pictures completely encased in acrylic on lingual portion
• Posterior border tapered towards the tissue with a rounded edge (thin, sharp knife-like edges not acceptable)
• The tissue side of the plate is generally left alone unless otherwise requested by the Client, but it must be inspected for pits/voids or sharp areas. Pits/voids must be patched with acrylic, and sharp areas must be carefully ground smooth without removing too much acrylic

Posterior Bite Plate-

• Bite plate must be built up over posterior teeth either to the level specified by the Client or to an amount sufficient enough to accomplish the desired function of the appliance. For example: if the Client wishes to use the appliance to jump a cross bite, the posterior bite plate must hold the patient open enough to allow the tooth in cross bite to be moved into a proper position
• The bite plate must be the approximate width of the posterior teeth which it is covering without excess bulk and the surface must be smooth and as flat as possible while still allowing for contacts with the opposing arch