Jaw relation in complete denture

Why are record blocks made?

To help record relationship between upper and lower arch before arranging the teeth

What's the maxillary and mandibular anterior height?

Maxillary 22mm - mandibular 18 mm

What's the maxillary and mandibular posterior height?

Maxillary 18mm - mandibular 2/3 of retromolar pad

What is the maxillary and mandibular anterior width

Maxillary 5 mm - mandibular 5mm

What's the maxillary and mandibular posterior width?

Maxillary 8mm - mandibular 8 mm

How can you harden the wax

Cooling it in cold water for a few minutes to harden it

What does the upper rim restore and support?

Lip support

What is the average nasolabial angle?

90°

Should you increase VDO to compensate for inadequate lip support

No

What is the 12 o'clock view?

Rim should slightly contact the wet/dry line of lower lip

What do the F and V sounds help determine?

Assess the anterioposterior position and level of upper incisal edge

The plane of the 6 upper anterior teeth should be parallel to? Und what instrument is used?

Interpupillary line - fox's occlusal plane

How to mark canine points?

Extend floss from inner canthus of the eye along the lateral border of the alar cartilage, to the upper rim while patient is smiling

What is the guide for the midline?

Philtrum

What is VDO?

Vertical dimension of occlusion, the relationship between upper and lower jaws when the teeth or record rims are in contact

What are the mechanical methods of determining vertical relation?

1. Incisive papilla in relation to mandibular incisors

2. Parallelism of the ridge

What are the physiological methods in determining vertical relation?

1. rest position

2. Phonetics

3. Aesthetics

Formula for VDO?

VDO = RVD - FWS

RVD is rest vertical dimension

FWS is freeway space

What is the normal freeway space

2-4 mm

RVD is distance between?

Select facial points when mandible is relaxed

FWS is the space between?

Upper and lower teeth or record rims at rest

What are the 2 methods to record RVD?

Two dots technique and Willis gauge

Clicking teeth , masseter soreness or difficulty pronouncing P,B, M means?

Excessive VDO too high

Dribbling angular cheilitis, reduced chewing efficiency means?

Reduced VDO (too low)

What is the centric relation?

Relates to the Horizontal jaw relationship to establish how the maxilla relates to the mandible

How to record centric relation?

1. Gothic arch tracing

2. Bi manual manipulation

Where and why is the posterior palate seal created?

Created at the posterior border of the maxillary denture to improve its seal against the palatal tissue

What are the areas involved in the posterior palate seal?

Hamular notch - anterior soft palate along its attachments - hard palate on either side of nasal septum

Where is the anterior vibrating line located?

Junction between the immovable hard palate and slightly moveable soft palate

Where is the posterior vibrating line located?

On the soft palate, mark the most posterior limit of functional movement during phonation

What is the master cast scrapping depth? And where?

Approximately 1-1.5 mm deep at the demarcated vibrating line and in the butterfly are