Management of proximal caries Flashcards
Are class II and III cavities the same?
Yes, proximal surface of patseir and anterior teeth
How can you diagnose class II/III caries?
- If you can see a cavity
- Can transiluminage if it is early on
- Bitewing radiographs
How will caries appear under transillumination?
A darker region
What teeth would you use transillumination for?
Anterior teeth
How would you detect posterior class II caries?
Radiographs bitewing
What colour do caries appear on a radiograph?
Darker
When can you leave caries confined to enamel?
Fluoride and enamel will remineralise, the caries may arrest
What do you do if the caries have reached the ADJ, obviously cavitation or visible on BW?
Need to intervene
What is the contact area?
The area that touches the adjacent tooth
What is a common problem when starting with regards to the contact area?
Common error is to not remove the contact area, the contact area is often above the various lesion
What is the dip in interproxiaml papilla called?
Col
Where is the contact area of posterior teeth?
Found more Buccally
Where is the contact area on anterior teeth?
Why do you need to take a radiograph of posterior teeth?
To detect caries which are under the contact point
How are the majority of proximal caries accessed?
Through marginal ridge but it’s important to consider whether a buccal/lingual approach is more conservative of tooth tissue
What is the most common way to access approximal caries of posterior teeth?
Through the occlusal marginal ridge, not right next to the adjacent tooth
What is proximal box prep?
How can you improve the resistance of a proximal restoration?
Grooves, slots, rails can be made in the wall
What is the gingival floor?
Base of the proximal box
Part for the box closest to the gingival tissues
What do you need to do to the gingival floor?
Flat or slight incline
What is the cavity design for a class II amalgam resto prep?
Scoop box form
Gets wider towards the occlusal surface
What depth should the preparation be?
1.5mm
Would you use amalgam for an initial lesion?
No, as it is more destructive
You need to remove all unsupported enamel
What should the cavo-surface angle be for amalgam prep?
90 degrees
When making the initial cavity, should you drill all the way through the marginal ridge?
No
What shape of preparation would you do for a composite?
Scoop form
What bur would you use to make a scoop form cavity prep shape?
Pear-shaped bur
Can you keep unsupported enamel if you are going to do a composite restoration?
Yes
Remove friable enamel but can keep unsupported enamel
Do you need to place a matrix for class II/III cavities?
Yes
Do you on,y use a matrix band for amalgam?
No, both amalgam and composite
What is a tunnel preparation?
Gains access to the approximal caries while maintaining the marginal ridge
When would you use a tunnel preparation?
Small curious lesions
How would you apparatchik a class II with a tunnel preparation?
Occlusally, buccally or lingually
What material is used for a tunnel preparation?
Glass ionomer or composite
What is the advantage of a tunnel preparation?
Conservative of tooth tissue
What are the disadvantages of tunnel preparation?
Technically difficult
Margins, ridge prone to fracture
Poor access to. Aries ADJ, therefore residual caries can remain
Only use when it is a small lesion
What would you use to fill root caries?
Glass ionomer
