This document discusses different types of restorations for class III cavities in incisors and cuspids, as well as restorations for proximal-incisal caries in primary anterior teeth. It describes dovetail cavities placed on the lingual of maxillary cuspids and facial of mandibular cuspids. Various restoration options are outlined, including esthetic resin, stainless steel crowns, composite strip crowns, open-face steel crowns, and pre-fabricated anterior stainless steel crowns. Guidelines for pulp protection when cavity preparation is deeper than 1mm into dentin are also provided.

1. Class III Cavity - Incisors
What type of spacing would make
a patient more susceptible ?

2. Class III Cavity - Cuspids
Dovetail is placed on lingual of maxillary cuspids and the facial of
mandibular cuspids.
roximal box is placed perpendicuar to a line tangent to
he surface on which the dovetail is placed.

3. Restoration of Proximal-Incisal
Caries in Primary Anterior Teeth
u Esthetic Resin Restoration
u Stainless Steel Crown
u Open-Face Steel Crowns
u Direct Resin Crowns
Myan skull - 900 AD

4. Composite (Strip) Crowns

5. Stainless Steel Crowns
u Esthetics - poor
u Durability - very good
u Time for placement - fastest
u Selection criteria - severely decayed, esthetics of
minimal importance, gingival hemorrhage not
controlled, inadequate patient cooperation

6. Open-Face Steel Crowns
u Esthetics - okay
u Durability - good, although
facing may be dislodged Time
for placement - takes longest to
place due to two-step procedure
Selection criteria - severely
decayed teeth, durabilty needed,
esthetics are a concern

7. Pre-fabricated Anterior Stainless Steel Crowns
u Brand names
u NuSmile
u Whiter Bite II
u Cheng Crowns
u Knider Crowns
u Advantage
u decrease chair time
u Disadvantage
u esthetics ?
u fractures

8. Challenge. . .
“The goal of restorative dentists as
we approach the 21st century should
be to delay and prevent placement of
initial restorations.”
Kenneth J. Anusavice
JADA, Vol. 126, June 1995

9. Note the position in relation to
the contact

10. Cavity preparation relations
to tooth morphology

11. • If the cavity preparation
is deeper than 1.0mm
into dentin pulp
• Pulp protection should
be placed (only on floor
of cavity prep)
• Pulp protection may be
calcium hydroxide and/or
and/or Resin Resin-GI
cement

12. Thin-layered application

14. Protect, then Etch 15 seconds Rinse (well)& Gentle Airdry (10s)
3-in-1 syringe

15. Apply Adhesive
Gentle Airdry 10s before VLC 10s

16. Apply C-R with caution
Secure Milar strip VLC 60s

17. Using Abrasive Discs
• Finish Class III C-R
with “football
”shaped finishing
points on lingual
• Use ET 6 bur and
Soflex discs on
facial surface
• Interproximal use a
gold knife and
abrasive strips