Functional Cusp Bevel is the additional removal of tooth in a cavity preparation or tooth preparation in case of restorations. Functional Cusp Bevel increases the thickness of the otherwise thin Occluso-Axial junction of the restoration.
What is the use of Functional Cusp Bevel ?
Additional thickness in this region is necessary because the Functional Cusp of the tooth is the one which bears the maximum load and Force during mastication and the increased bulk of the restoration due to the Bevel given will help in successfully bearing the excess load and force without fracture of the restoration.
Functional Cusp Bevel at 45 degrees to long axis of tooth
Does a Functional Cusp Bevel help in increasing Retention?
Having a functional cusp bevel helps in increasing the retention as the excess unsupported tooth structure is removed which is a cause for reduced retention. So with the functional cusp bevel as it is removed it improves or increases retention.
What is the Angulation of the Functional Cusp Bevel ?
The Functional Cusp Bevel Angulation should be – 45 Degrees
Functional Cusp Bevel Occlusal View
What is the Location of the Functional Cusp Bevel ?
Functional Cusp Bevel should be prepared on the Palatal Cups of the Maxillary Teeth and Buccal Cusps of Mandibular teeth as these are the cusps which are the functional cusps and bear the maximum stress, load and force during mastication.
Which Bur should be used to give Functional Cusp Bevel ?
Bur No: 171L is used to give a functional Cusp Bevel in Cavity preparation.
U havent even mentioned if its for resistance or retention form?most imp concept
Will Add it, thanks for pointing it out.
Having a functional cusp bevel helps in increasing the retention as the excess unsupported tooth structure is removed which is a cause for reduced retention. So with the functional cusp bevel as it is removed it improves or increases retention.
i m a final year student how to cover all d subjects within 2months & i havent completed d quota also still
If you are in a hurry, there are few books which can help you in completing your subjects at the last moment – Mastering BDS (I do not prefer it, but for last moment study it is useful to know what are the important topics). As for your quota you have to work double time to do it.
Can i have exact definition of functional cusp bevel as it is not given in GPT 9 so if u know the definition pls share it.
Functional cusp bevel is given towards structural durability…plz note
1. Removes unsupported tooth structure
2. Gives bulk to restoration..metal or Zr or ceramic… therefore gives it strength
Removing functional cusp.is tp.provide stuctural durability??is it rite?
Why bevel is given at 45° and not 30°, or 60°?
The main purpose of a bevel is to remove any unsupported Enamel or Dentin, when the borders or corners of the prepared tooth are trimmed at an angle of 45 degrees. All the unsupported Enamel and Dentin is cleared and only strong or firm tooth structure is left which can take the load of the restoration without any fracture or damage.
This is the main reason for giving a bevel at 45 degrees.