Name of the three types of hydrocolloid impressions
Preliminary ,Final, Occlusal (bite registration)

What the purpose of rinsing and spraying impressions with disinfectant- Decontaminate
Rinse- to remove as much bioburden as possible remove residual stone, soap or disinfectant from impression surface
Spray-

What color flame is given off when using a Bunsen burner, when you have balanced mixture of air and gas ( dental laboratory) Pale blue flame

Blacks C avity Preparations

Class 1
Class II
Class III
Class IIII
Class V
Class VI

1. Class 1:All pits and fissures restorations.
2. Class 2: Proximal surfaces of posterior teeth.
3. Class 3: Proximal surfaces of anterior teeth.
4. Class 4: Proximal surfaces of anterior teeth involving incisal angle.
5. Class 5: Gingival third of facial or lingual surfaces of all teeth.
6. Class 6: Cusps of posterior teeth.

What part of the Tofflemire retainer holder locks the slides and locks band firmly in place
Retainer (rotating spindle, hear, set-screw, slide)
Where to place a wedge on the walls of a Class II cavity prep
What is the pontic portion of a fixed bridge
Is part of fixed partial denture (bridge) which replace the missing teeth, and it’s connected to the retainer by a rigid (solid) connector or non rigid connector, it restores the function and esthetic of the missing teeth.

What is the excess material that must be removed because it doesn’t belong to the proper shape, size or