OC

Question 1

Goals of Complete Denture Occlusion

Answer 1

1- minimize the truma to the supporting structer
2-preserve the remainig structer
3-enhance the stability
4- fciliate the asthetic and speech
5- restore the masticatory force to a reasonable level

Question 2

Types of posterior artificial teeth

Answer 2

Anatomic ( 30 degree or more)
Semi anatomic ( 10-20)
Lingual
Non anatomic

Question 3

Anatomic and semi anatomic diff in?

Answer 3

Degree of the cuspal inclinaiton

Question 4

Five Factors Affecting Occlusal Balance

Answer 4

1- condyelar inclination
2- incisal guidance
3-cuspal inclination
4- occlual plane
5- compencating curve

Question 5

Hanau’s Quint
• Inter-relationship of these five factors may be
described by Theilman’s Formula
• In order to maintain a balanced occlusion:

Answer 5

CI x IG / CIxCCxOP

Question 6

Hannau formula can be simplfide through

Answer 6

CI+IG/2 if its more than the cuspal inclination then it means theres a posterior inclinition
If less then theres an interference

Question 7

Candylar guidance

Answer 7

Is not modifade by the doctor - when it is steep we have to decrase the IG and when it is shallow e hae to incrase it- increase the CG angel will increase the jaw sapparation

Question 8

Incisal guidance

Answer 8

Is the result from the horizntal and vertical overlap
The neutral IG is the mx-md relationship when the md moves forward (protrotion)
The denture one is arbitary or not based on anything only what the doc see more asthetic

Question 9

Occlusal Plane inclination
(curve of occlusion)

Answer 9

Imaginary line touching the incisal edge of the mx anti and the cusps of posterior teeth

Question 10

Compensating curves

Answer 10

Antio posterior
Medial- lateral

Question 11

Posterior Occlusal schemes

Answer 11

1- anatomic or semi anatomic bilateral balanced occlusal
2-monoplane 0 degree teeth with compensating curve balanced
3- lingual non balanced
4- monoplane non balanced

Question 12

Stable simounatious contact of the opposing teeth with smooth bilateral glinding movmnt but within the normal level

Answer 12

Anatomic and semi anatomic Bilateral balanced

Question 13

INdication of balanced occlusion

Answer 13

1- good reisdual height or class l residual height
2- moderate to steep incisal guidance
3- normal bucco-lingual width of the ridge
4- asthetic

Question 14

Advantages of balanced occlusion

Answer 14

1- reduces the lateral forces during functional and parafunctional movmt
2- improve the lateral stability
3- improve the mastication

Question 15

Bilateral balanced occlusal

Answer 15

1-Anatomic or semi anatomic denture teeth are used.
2. Arranged teeth to a compensating curves.
3. Occlusal plane should be parallel to upper and lower
member of the articulator
4. The steepness of these curves is affected by incisal
guidance and condylar inclination.
5. We must evaluate the repeatability of centric relation
before selecting occlusal scheme .
6. Need a semi adjustable articulator with maxillary cast
positioned using face bow , protrusive and lateral
records.
7. It is difficult to achieve because the multiple of inclined
planes to be adjusted

Question 16

Monoplane with Balancing Ramps

Answer 16

The bilateral balanced occlusal can also be achieved using non anatomic posterior teeth if
balancing ramps are employed.
And in the lateral mvmnt there will be 3 pointof contact bilateraly

Question 17

Lingulized occlusal

Answer 17

Balanced; using anatomic or semi anatomic
Non balanced is when using the anatomic teeth on the mx and non anatomic and the md

Question 18

Lingual occ

Answer 18

Anatomical teeth: cross teeth and cross arch balanced
Lingual: cross arch balanced
Flat: 3 points of contact