W2 Lect - Special tray Flashcards by Aurora H | Brainscape

Q

Name of each pic

A

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Q

Name of this process (black line)

A

Outline

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Q

Identify parts of mucous membrane

A

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Q

Identify

A

Maxilla - labial frenulum

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Q

Identify

A

Buccal frenulum

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Q

Identify

A

Labial vestibule

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Q

Identify

A

Buccal vestibule

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Q

Identify

A

Disto-buccal area
Corono-maxillary space

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Q

Identify

A

Hamular notch

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Q

Identify

A

Vibrating line

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Q

Identify

A

Vibrating line

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Q

What is residual alveolar ridge?

A

The portion of the alveolar ridge and its soft tissue covering which remains following the removal or loss of teeth”

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Q

Identify

A

Residual alveolar ridge

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Q

Identify

A

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Q

Identify

A

Maxillary tuberosities

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Q

Identify

A

Q

Identify

A

Labial and buccal vestibule

Q

A

Retromolar pad

Q

identify

A

External oblique ridge

Q

What can you observe here?

A

Buccal extension

Q

Identify

A

Lingual pouch

Q

6 clinical applications of special tray

A

Completely edentulous patient
Subtotal edentulous patient
Removale partial denture
Special anatomical situations
Implantology
Reconstruction prosthesis

Q

What is the purpose of special tray?

A

To minimize…
- Impression material distortion (uniform thickness, rigid tray)
- Tissue distortion (less viscous material, Accurately adapted tray)

Q

What are the types of auxillary handles?

A

Q

What are the 2 types of special trays?

A

Close fitting
Spaced

Q

Characteristics of impression materials used with close-fitting special tray?

A

Used with very low viscosity impression materials, since it provide a thin layer after setting:
- Zn-eugenol paste
- very low viscosity elastomers

Q

Characteristics of impression materials used with spaced special tray?

A

Used with high viscous impression material (3mm)
- alginate
- medium or high viscosity elastomers

Q

2 types of materials used for special/custom tray

A

Resins
Thermoplastic materials

Q

3 types of resins that can be used to make special/custom tray

A

Visible light curing resins
Self-curing resins
Heat curing resins

Q

An example of thermoplastic materials used for special/custom tray

A

Sellak

Q

Characteristics of resins used to make special tray

A

Rigid, retain its shape
Not thermoplastic

Q

3 features of sellak that is used for making special trays

A

Breakable (undercuts, wire-reinforcement)
Thermoplastic (green stick, oroplastic impression materials)
cheap

Q

What is the best type of resin for making special tray?

A

Heat-curing resin (clear) special tray

Q

Can old denture be used as a special tray?

A

Yes