This document discusses preventive resin restorations (PRR), which involve sealing carious lesions and susceptible areas with resin to prevent further decay. PRRs are classified into three types based on the extent and depth of the lesion. Type A involves sealing shallow enamel lesions with resin or sealant. Type B uses resin filler for minimal lesions extending into dentin. Type C places a bevel and layers of resin composite to restore larger lesions extending into dentin. PRR provides advantages over traditional fillings by requiring minimal tooth preparation and sealing decay, while future replacements are less invasive than replacing fillings. Maintaining isolation from moisture is important for success.

2. INTRODUCTION
 Are among the newer techniques which show long
term success.
 This treatment of resin restoration has various distinct
advantages over the traditional amalgam restorations.
 But it requires an excellent isolation of moisture and
saliva contamination.

3. PRR
 PRR utilizes the invasive and non invasive treatment
of borderline or questionable caries.
 The resin placed in the carious areas and adjacent
caries susceptible areas, seals them from the oral
environment and provides a valuable treatment
alternative to conventional restorations like amalgam.

4. Deep pit and fissures on tooth surface
require sealant therapy

6. If caries present in one area or part of the
pits or fissures
That particular caries is restored and remaining pits
and fissures are protected with sealants
PREVENTIVE RESIN RESTORATION

7. TYPES
Based on the extent and depth of the carious lesion ,
PRR are of 3 types
a) type A
b) type B
c) type C

8. Type A

9. TYPE A
 Comprises of deep pit and fissures
where caries is limited to enamel.
 The preparation size is very small.
 A slow speed round bur is used to remove any
decalcified enamel.
 Unfilled resin or sealent is used to restore the
preparations of carious lesions.

10. Type B

11. TYPE B
 Minimal exploratory carious lesion.
 The preparation is by size 2 round bur.
 The restoration requires some filler to the unfilled
resin.

12. Type C

13. TYPE C
 Isolated carious lesion
need for greater exploratory preparation into
dentin.
 large size bur is used.
 A bevel is placed on the enamel cavosurface margin of
the preparation.
 Unfilled resin layer followed by filled composite is
introduced into the preparation.

14. STEPS TO BE FOLLOWED
 Thorough prophylaxis to be done.
 Teeth should be isolated with rubber dam or cotton
rolls.
 Any decalcified areas over the tooth surface to be
removed with the bur.
 Acid etchant to be applied.
 Washing and drying.
 Bonding agent to be applied .
 Then the cavity to be restored with sealant.

15. TYPE A TYPE B

16. ADVANTAGES
 Minimal cavity preparation is required
thus prevents unnecessary removal of healthy tooth
structure for retention.
 Seals caries halting the destruction of tooth.
Eg: teeth with pit and fissure

17. Conventional restoration
leading to complete tooth loss

18. PRR with minimal
tooth loss

19.  Loss of the restoration and subsequent
replacement proves to be less invasive than
that for conventional restoration like amalgam.

20. PRECAUTIONS
Early loss of PRR similar to pit and fissure
sealants
due to insufficient etching
so, it is very important to maintain excellent isolation
from moisture contamination

21. THANK YOU