Edentulous Ares

Question 1

What’s kennedy class 1?

Answer 1

bilateraledentulous areas located posterior to all remaining teeth

Question 2

What’s Kennedy class 2?

Answer 2

edentulous area located posterior to all remaining teeth

Question 3

What’s Kennedy class 3?

Answer 3

unilateraledentulous area boundedby anterior and posterior natural teeth

Question 4

What’s Kennedy class 4 ?

Answer 4

a single, but bilateral(crossing the midline) edentulous area locatedanteriorto remaining teeth

Question 5

What’s articulator ?

Answer 5

Articulator: A mechanical instrument, representing the temporomandibular joints and jaws, to which casts may be mounted to simulate some or all mandibular movements.

is accurate enough to establish proper occlusal and esthetic placement of the artificial teeth

Question 6

What’s Small Nonadjustable Articulators disadvantages ?

Answer 6

Often leads to restorations with occlusal discrepancies

Do not reproduce all of mandibular movement

Can be corrected intraorally, but this is often time consuming and leads to increased inaccuracy

Question 7

Which articulator for most routine fixed prostheses ?

Answer 7

Semi-adjustable Articulators 


Question 8

Wide range of positions and can be set to follow a patient’s border movements with which articulator ?

Answer 8

Fully Adjustable Articulators

Question 9

Using and adjusting them can be time consuming and require a high level of skill and understanding by the dentist and the technician
They can be very useful as treatment complexity increases

This is related to which articulator ?

Answer 9

Fully Adjustable Articulators

Question 10

The orientation of the maxillary cast to the condylar elements of the articulator and axis-orbital plane must match the orientation of the maxillary arch to the ?

Answer 10

hinge axis and axis-orbital plane of the actual patient

Question 11

What’s Kinematic facebows ?

Answer 11

can precisely match the hinge axis position when used with the natural dentition

, the actual hinge axis can be located using a kinematic facebow.

Question 12

What’s Arbitrary facebows ?

Answer 12

rely on facial and anatomical landmarks to record the position of the maxilla relative to the hinge axis and axis-orbital plane

Arbitrary facebows use average anatomic land- marks to approximate the actual hinge axis.

Question 13

patient’s mandible to the centric relation position, as it is ?

Answer 13

At the proper occluding vertical dimension, this position then becomes the centric occlusion position for the patient

Question 14

What can we evaluate on diagnostic casts ?

Answer 14

1. Diagnostic casts -evaluation of anatomy without the presence of the patient
2. Allow for determination of necessary pre-prosthetic surgery
3. Can be mounted on an articulator
4. Inter-occlusal space can be evaluated
5. Provide the base from which custom impression trays are fabricated

Question 15

What’s Preliminary impression?

Answer 15

Accurate reproductions of a patient’s mouth
Used for the diagnosis, documentation of dental arches
Visual aid for education

Question 16

Whats Final impression ?

Answer 16

Have the exact details of the tooth structures and surrounding tissues
Used to make casts and dies with the precise details

Question 17

Whats Bite registration ?

Answer 17

Essential when establishing the articulation of maxillary and mandibular casts

Question 18

While Mounting The Maxillary Cast On The Articulator what should we consider ?


Answer 18

1. The proper position of the maxillary cast relative to the condyles is an important concept for especially complete dentures
2. The orientation of the maxillary cast to the condylar elements of the articulator and axis-orbital plane must match the orientation of the maxillary arch to the hinge axis and axis-orbital plane of the actual patient
3. A facebow orientation will ensure that the proper relationship will minimize this type of error

Question 19

What’s face bow ?

Answer 19

recording will place the models into a closer relationship with the anatomical closure axis of the patient and help minimize errors

Facebow is an instrument used to record the orientation of the maxillary arch to some anatomic reference point or points and transfer this information to the articulator; it allows the mounting of the maxillary cast to the upper mem- ber of the articulator.
Reference points vary depending on the facebow, and may include nasion or orbitale. These points are based on averages and yield an error of 2 mm or less in most patients.

Question 20

How to Establishing The Occluding Vertical Dimension ?


Answer 20

1. The centric relation (CR) position and occluding vertical dimension orientation of the mandibular cast on the articulator must match the centric relation position and occluding vertical dimension of the patient

2.Once the maxillary plane of occlusion is established, the determination of the occlusal vertical dimension is made

Answer 21

Once the recording is made

1. The maxillary cast is placed in the record base
2. The facebow is positioned on the articulator
3. The maxillary cast is attached to the articulator using mounting stone
4. Once the maxillary cast is proper positioned the records are seated together
5. Observe the casts for possible contact in the posterior areas
6. Secure the mandibular cast to the lower member of the articulator using mounting stone

Question 22

How to do interocclusal record ?

Answer 22

■ Bite registration—usually made with wax or an elastomeric material such as polyvinylsiloxane
■ Centric relation record—allows one to mount the relationship of the mandibular cast to the maxillary cast in centric relation (CR)
■ Protrusive record—allows one to set the condylar inclination on the articulator
■ Lateral excursion records—allows one to set the Bennet angle on the articulator

Question 23

What’s pantograph ?

Answer 23

Pantograph is an instrument used to graphically record in one or more planes, paths of mandibular movement in order to provide information for the programming of a fully adjustable articulator.

Question 24

What’s Functionally generated path (FGP) ?

Answer 24

A registration of the paths of movement of the occlusal surfaces of one arch onto a recording medium attached to the opposing preparations. It allows the precise fabrication of the morphol- ogy of the occlusal surfaces of the teeth being restored.

Question 25

What’s Ridge augmentation ?

Answer 25

Soft and/or hard tissue augmentation of edentulous ridges or pontic spaces.

Question 26

What’s Removal of flabby tissue ?

Answer 26

:Excess or too much soft tissue provides poor sup- port for a denture and in certain instances can be surgically reduced to provide a better area for support.

Question 27

What’s Inflammatory papillary hyperplasia (IPH) ?

Answer 27

hyperplasia of palatal tissue under a poor fitting denture base that is kept in at night.