Inclined Bite Plane: Indications And Application

Inclined Bite Plane: Indications And Application

“What is an inclined bite plane in orthodontics?”

• Upper anterior inclined planes.
• Lower inclined planes:
  • Cemented inclined plane or Catalan’s appliance.
  • Removable inclined plane.

• It appears as a flat anterior bite plane.
• Anterior inclined plane engage lower incisors and leads mandible to slide anteriorly.
• It consists of 45 degree angulation with seating groove for mandibular incisors so that it reduces labial tipping of incisors.
• It can also function as retention appliance aftr completion of functional appliance therapy.

• This appliance was discovered by Catalan.
• It is indicated in correction of the anterior crossbite.
• It cannot be worn for more than three weeks.

• Working models should be constructed.
• Design of inclined plane is made at model. Design of inclined plane is such that it include tooth and half the crossbite area over both sides.
• Wax up of inclined plane is carried out.
• It should lie 45° to occlusal plane.
• Posterior extension is such that the patient should be prevented from biting in retruded position.
• Now the incline plane is acrylized.
• At time of insertion, bite should not be more than 4 mm.
• As appliance is fiishes it should be cemented with zinc oxyphosphate luting cement.
• Patient should be recalled after one week
• Correction is accomplished in the time of two weeks.

• Relapse is absent or is very less.
• Fabrication is easy.
• Crossbite is corrected very fast.
• Trauma to tooth is very less.

• Difficulty in speech.
• Patient feels difficulty in eating.
• Alignment of teeth is not precise.
• If appliance remains in mouth for long duration it causes anterior bite.

• Used very frequently.
• It provides good results.
• During its fabrication an inclined plane is attached to removable mandibular Hawley appliance at 45° to occlusal plane.
• For retention clasps are added.