Restorative quiz 1

Class I

affecting the pits and fissures of
the teeth

Surfaces involved in class I restorations

Occlusal pits and fissures of premolars and molars
◦Buccal pits and fissures of mandibular molars
◦Lingual pits and fissures of the maxillary molars
◦Lingual pits of maxillary incisors, most frequently in the pit near the cingulum

Class II

Proximal surface of molars and premolars

Surfaces involved in class II restorations

◦Two-surface restoration of posterior teeth
◦Three-surface restoration of posterior teeth
◦Multisurface, four-surface (or more) restoration of
posterior teeth

a class II can involve as many as ___ surfaces of a tooth

5

Class III

Affects the interproximal surface
of incisors and canines (anterior teeth)

Class IV

Involves a larger surface area, including the incisal edges and interproximal surface of incisors and
canines

Class V

Towards Gingiva

Class VI

Cusp Tips from grinding and wearing down occlusal surface

Indications for restorative dentistry

±Initial or recurring decay (cavity fillings)

± Replacing a failed restoration

± Replace missing teeth

± Abrasion or wearing away of tooth structure

± Erosion of tooth structure

Cavity preparation

process of removing diseased tooth structure while leaving healthy tooth structure, allowing for the tooth to support a restoration

What 2 steps is cavity preparation divided into?

Initial and Final

Forms of initial cavity prep (hint: there’s 4)

1. outline form

2. resistance form

3. retention form

4. convenience form

outline form

design and initial depth of sound tooth structure

resistance form

primary shape and placement of cavity walls

retention form

to resist displacement or removal

convenience form

accessibility in preparing and restoring the tooth

Final cavity preparation

•Removing any enamel, diseased dentin, or old restorative material (or a combination)

•Inserting additional resistance and retention notches, grooves, and coves

•Placing protective dental materials (lining agents, bases, desensitizing, or bonding agents)

What is 1

Buccal wall

what is 2?

Cavosurface margin

what is 3?

pulpal wall

what is 4?

lingual wall

what is 5?

axial wall

what is 6?

gingival wall

Proximal box

area of a class II cavity prep consisting of 3 vertical walls (buccal, lingual, axial) and 1 horizontal wall (gingival)

line angle

angle formed by the junction of 2 walls/surfaces

point angle

angle formed by the junction of 3 walls/surfaces

list 11 steps of restorative procedure… okay go

1. prepare set up

2. communicate with patient

3. position patient

4. dentist evaluates the tooth to be restored

5. apply topical and local anesthetic

6. place moisture control (dental dam)

7. complete tooth prep and maintain operative field

8. transfer and place dental materials

9. burnish, carve and finish restoration

10. remove isolation

11. evaluate occlusion and complete final polishing of restoration

dental assistants role in restorative procedure

1. prepare the setup

2. provide moisture control and better visualization (HVE and tri-syringe)

3. transfer instruments and accessories

What happens if during tooth prep, the loss of tooth structure becomes greater than what is remaining of the natural tooth structure?

The dentist must decide whether to:

•Restore the tooth with a direct restoration

•Change the treatment plan and advise the patient that an indirect restoration would be more suitable

retention pins

stronger system used for retaining and supporting restorations. Has deep threads that grip dentin when screwed into tooth structure. one pin is placed for each missing cusp.

What is the internal surface of a cavity preparation that runs parallel to the long axis of the tooth called?

axial wall

How many tooth surfaces does a Class I restoration typically involve?

1

During a Class III restoration, the dentist will enter the tooth from the lingual in order to reduce the size of the restoration from the ______ aspect.

facial