Quality Evaluation Criteria for Diagnostic Wax-up



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Quality Evaluation Criteria for Diagnostic Wax-up





R

S

T

V

Articulator settings

Condylar elements and incisal guide table are properly set

One of the settings of the condylar elements or Incisal guide table are improperly set

Two of the settings of the condylar elements or incisal guide table are improperly set

Three or more of the settings of the condylar elements or incisal guide table are improperly set

Cusp placement

cusp tips are properly placed,
buccal-lingually, mesial-distally,
and well defined


cusp tips are slightly misplaced &/or not well defined (<1mm)

cusp tips are significantly misplaced (>1 mm) and poorly defined

cusp tips are not identifiable

Axial contours

buccal and lingual contours are harmonious with adjacent teeth

buccal and lingual contours are slightly over or under contoured (<1mm)

buccal and lingual contours are significantly over or under contoured (>1mm)

buccal and lingual contours lack proper height of contour

Proximal contacts

proximal contact is harmonious with the adjacent teeth and conducive for gingival health

-proximal contact is closed but is moderately smaller or larger in size than normal
-proximal contact is closed but displaced from its normal position


-proximal contact has small concavity-area of concavity is ≤ 1 mm
-proximal contact is dosed but pin point in size


-proximal contact is open
-proximal contact has large
concavity-area of concavity is >1 mm


Interproximal
contours


Interproximal contours provide for gingival health and are harmonious with adjacent teeth

Interproximal contours slightly impinge papillary space, &/or narrow contact

Interproximal contours significantly impinge upon papillary space,

Interproximal contours are completely absent, visible open contact

Occlusal anatomy-
cusp, marginal and triangular ridges &
developmental grooves


dearly defined, with proper identifiable cusp points, ridges and grooves of proper height and depth

lacking identifiable cusp points, ridges and grooves of proper height and depth, involving 1 area

lacking identifiable cusp points, ridges and grooves of proper height and depth, involving 2 areas

lacking identifiable cusp points, ridges and grooves of proper height and depth, involving more than 2 areas

Occlusion
of wax-up


occlusal surface is in harmony with adjacent teeth, all ridges and
cusp tips are of equal height as
adjacent teeth


occlusal surface is slightly, in
infra-occlusion relative to
adjacent teeth (≤ 0.5mm)


-occlusal surface is significantly in infra- occlusion relative to adjacent teeth (>0.5mm)
-cusp tips not harmonious with a flat plane of occlusion


-occlusal surface is in hyper-occlusion with no visible
occlusal contact of adjacent teeth
-occlusal surface is grossly in
infra-occlusion relative to adjacent teeth (≥1 mm)


Occlusion of remaining teeth

-Visual contacts in CO no more than 4 teeth (2 pair) w/o occlusal contacts in hinge position
- Bilateral protrusive contact on
anterior teeth
- Disclusion of posterior teeth on
the nonworking side in lateral
excursions
- Canine guided disclusion or group function disclusion in lateral excursions,
-No interferences in protrusive
or lateral excursions


-Lack of visual contacts In CO
- No more than 6 teeth (3 pair) w/o occlusal contacts in hinge position
- Bilateral protrusive contact on anterior teeth
- Disclusion of posterior teeth on the nonworking side in lateral excursions
- Canine guided disclusion or group function disclusion in lateral excursions.
- no interferences in lateral or protrusive excursions


- Lack of visual contacts in CO
- No more than 8 teeth (4 pair) w/o occlusal
contacts in hinge position
- Bilateral protrusive contact on anterior teeth
- Disclusion of posterior teeth on the nonworking side in lateral excursions
- Canine guided disclusion or group function disclusion in lateral excursions.
- no interferences in lateral or protrusive excursions


-Lack of visual contacts in CO
- 9 or more teeth (>4 pair) w/o
occlusal contacts in hinge position
- Lack of bilateral protrusive contact on anterior teeth
- Working, balancing or protrusive interferences in excursions


Finish

uniformly smooth, no surface
defects and polished


slight roughness, surface defects on only one surface

significant roughness and/or surface defects on two surfaces

significant roughness and/or
surface defects on three or more surfaces



















































8-9 R’s =A+

4 S’s =B+

8-9 S’s =C+

3 or more T’s=F

2 S’s =A

5 S’s =B

1 T =C

1 or more V’s=F

3 S’s =A-

6-7 S’s =B-

2 T’s =C-





CRITERIA FOR TYPODONT OCCLUSION



R


- Visual contacts in CO - no more than 4 teeth (2 pair) w/o occlusal contacts in hinge position
- Bilateral protrusive contact on anterior teeth
- Disclusion of posterior teeth on the nonworking side in lateral excursions
- Canine guided disclusion or group function disclusion in lateral excursions.
- No interferences in protrusive or lateral excursions

S

- Lack of visual contacts in CO
- No more than 6 teeth (3 pair) w/o occlusal contacts in hinge position
- Bilateral protrusive contact on anterior teeth
- Disclusion of posterior teeth on the nonworking side in lateral excursions
- Canine guided disclusion or group function disclusion in lateral excursions.
- No interferences in lateral or protrusive excursions

T

- Lack of visual contacts in CO
- No more than 8 teeth (4 pair) w/o occlusal contacts in hinge position
- Bilateral protrusive contact on anterior teeth
- Disclusion of posterior teeth on the nonworking side in lateral excursions
- Canine guided disclusion or group function disclusion in lateral excursions.
- No interferences in lateral or protrusive excursions

V

- Lack of visual contacts in CO
- 9 or more teeth (>4 pair) w/o occlusal contacts in hinge position
- Lack of bilateral protrusive contact on anterior teeth
- Protrusive interferences
- Working and/or balancing interferences in excursions




4-5 R’s =A

5 S’s =B

3 S’s =C

1-2 T’s =D

3 or more T’s=F

1 or more V’s=F



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