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iRubric: Complete Dentures - Lab 1 Custom Tray rubric

iRubric: Complete Dentures - Lab 1 Custom Tray rubric

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Complete Dentures - Lab 1 Custom Tray 
Rubric Code: U2W47AC
By Operative
Ready to use
Public Rubric
Subject: Medical  
Type: Assessment  
Grade Levels: Graduate

Powered by iRubric Custom Tray (Lab 1)
  Ideal A

100 pts

Acceptable B

81 pts

Modifications C

62 pts

Clinically unacceptable E

0 pts

Borders
Extension

Ideal A

Perfectly trimmed 2-3mm short of the depth of the vestibule.
NOTE: Tray should cover the tuberosities (hamular notches) and retromolar pad.
Acceptable B

Tray extensions have minor variations form the ideal criteria which will not affect quality of final impression
Modifications C

Tray more than 1-2 mm Over-extended or underextended
Clinically unacceptable E

Tray prevents clinically acceptable impression. more than 3-5 mm overextended or Under-extended.
Border quality and thickness

Ideal A

borders should be well adapted to the cast and smoothly formed with no sharp projections
Acceptable B

Tray extensions have minor variations form the ideal criteria which will not affect quality of final impression
Note: Rough or sharp edges are not acceptable because it can hurt the patient.
Modifications C

Rough - needs polishing
Irregular - too thick, needs modification to thin it out
Sharp - needs modification to be rounded

Note: Extremely rough or sharp edges are not acceptable because it can hurt the patient.
Clinically unacceptable E

Tray prevents clinically acceptable impression. Irregular border is too short or thin and cannot be modified

NOTE: Extremely rough or sharp edges are not acceptable because it can hurt the patient.
Handle/Finger Rest
Size

Ideal A

Handle rest should perfectly fit the students thumb. Perpendicular to ridge and 15mm wide and 22mm in length.

1 handle on maxillary tray positioned in the incisor region on the labial flanges
Acceptable B

Handle have minor variations form the ideal criteria which will not affect quality of final impression
Modifications C

Too large (more than 30mm long and more than 25mm wide)
Too small (Less than 10mm long and less than 10mm wide)
Clinically unacceptable E

Absent - no handle/finger rest
Interference with border molding

Ideal A

Handle is perfectly perpendicular. Does not interfere with border molding

1 handle on maxillary tray positioned in the incisor region on the labial flanges. 3 handles on mandibular tray positioned: 1 incisor region,
2 molar region
Acceptable B

Handle have minor variations form the ideal criteria which will not affect quality of final impression
Handle is slightly angulated (less than 15 degrees). Does not interfere with border molding.
Modifications C

Handles not positioned properly in relations to the ridge more than 15 degrees.

Does not interfere with the border molding or distort the lip
Clinically unacceptable E

Handle is angulated more than 15 degrees. Interferes with the border molding. not finished neat and clean
distort the lip.
Stability/Fit
Stability

Ideal A

Perfectly stable, doesn't rock, has some retention.
Acceptable B

Handle have minor variations form the ideal criteria which will not affect quality of final impression
Modifications C

Tray stability is adequate to make a clinically acceptable impressions , but marginally so.
Clinically unacceptable E

Tray prevents clinically acceptable impression. Unstable, rocks a lot
Adaptation to ridge/palate tissues

Ideal A

Palate of the tray is closely adapted to the cast
Acceptable B

Small space, less than 2mm, between the tray and cast
Modifications C

There are no modifications for this criteria.
Clinically unacceptable E

Tray prevents clinically acceptable impression. Inadequate adaptation to ridge/palate of the cast
Wax Blockout

Ideal A

Slight, thin blockout of the undercuts. Ideally wax is 1-2mm thick.
NOTE: tray/handles residual blockouts were removed neat and clean
Acceptable B

Blockout does not interfere with the adaptation, but wax is slightly thicker than ideal.
Modifications C

has residual wax blockout that interferes with the tray adaptation. Wax not removed, has debris and not neat and clean
Clinically unacceptable E

Tray prevents clinically acceptable impression. Inadequate wax blockout too thick Wax not removed, has debris and not neat and clean




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