Principles of selective grinding, finished and polishing

Question 1

Causes of occlusal disharmony during dent insertion

Answer 1

1- proccessing
2-change in the supporting strecure
3-diff during adaptetion

Question 2

What are the objectives for occlusal correction ?

Answer 2

1- comftobale with no sorceness
2-improve function
3-enhance the stability
4-preserve the supporting structure

Question 3

What are the procedures for correction the occlusion?

Answer 3

1- labratory remounting
2- intra-orally ( not recomened)
3- clinical remounting

Question 4

Advantages of clinical Remounting and Selective Grinding

Answer 4

1- less paitent inteaction
2-more functional foundition
3-no slaiva
4-stable
5-we can see the proceder better

Question 5

What is the purpose of laboratory remounting

Answer 5

1- error during processing
2- faulse vdo
3-false CR

Question 6

Laboratory Remount Instruments and Materials

Answer 6

1- dent bas and cast
2- articulator and plaster
3-spatula and rubber bowel
4-articularting papaer
5-stright hand pice and acrilic burr

Question 7

Selective Grinding Is Carried Out For

Answer 7

1-centric
2-working
3-balance
4-protrusion

Question 8

Contact

Answer 8

Contacts in Centric relation between mx lingo and md bucc
Lateral:
Working side -post teeth and canine
Nonworking-post teeth
Protrotion: post and incisal edge

Question 9

If the cusp is high in centric and not high in the e-centric what do we do

Answer 9

We deepen the central fossa and marginal ridge

Question 10

If the cusp is high in both centric and not

Answer 10

Grind the cusp but not the centric cusp

Question 11

Selective Grinding in Work Side

Answer 11

BULL rule is applied
Grinding for the non centric cusps

Question 12

Selective Grinding in Non-Work Side

Answer 12

BULL rule is not used
We use we use a carbbon paper

Question 13

Protruseve exertion

Answer 13

BULL rule is used
Reduction for the mx distal slope and md mesial slope

Question 14

Steps of Selective Grinding of Anatomic Teeth in a Balanced Occlusion

Answer 14

Adjust the horizontal and lateral condylar inclination.

Close the articulator, with the condylar elements against the centric relation stops.

Posteriorteethareincontact.

Anterior teeth should not be in contact.

Examinethelingualmaxillarycusps&buccal mandibular cusps.

Question 15

Lingualized balance

Answer 15

In the working the mx lingo contact w md buccal inclinition of the lingual cusp

In the balance side mx lingual w the lingual inclinition of the md buccal cusp

Protrotion light cotact in the anti and contact in the 2nd molar area

Question 16

Monoplane Occlusion- Neutrocentric concept

Answer 16

All teeth are in vertical overlap except cuspid and lartrals They are above the occlusal plane

The pre mature contact will be dark in the outline and shallow in the center

Question 17

Nonanatomic teeth

Answer 17

Stripping method can be used for the occlusal equilibration of nonanatomic teeth (carborundum stripping technique)

Question 18

finishing and pollishing Instruments & materials

Answer 18

• Acrylic Burs (remove the accses in the broder)
• Pumice (used wet for pollishing )
• Rag polishing wheels
• Felt cones
• Brush wheel
• scraper ( remove the bubbels )

Question 19

Palate thickness

Answer 19

The palate should be 2-3 mm thickness.