Minimal invasive preparation with sandblasting

Tips and tricks - Community - Direct posteriors
8 Mar 2016

We should try to make our greatest effort to protect healthy teeth structures in our daily practice. In this article we show a protocol of minimal preparation with sandblasting,

The complain of patient – color alteration in the certain part of tooth. Clinical finding, occlusal cavitation permeable to the dental probe.

Fig. 1

Fig 1.- Initial picture before starting the clinical procedures

Fig. 2

Fig 2.- The first stage will be anaesthesia and field isolation.

Fig. 3

Fig 3.- Isolation with liquid dam along the edge of the lesion area to preserve from abrasion the healthy tissues around the operative area..

Fig. 4

Fig 4.- Preparation of injured tissues with Rondoflex 27 micron Al2O3.

Fig. 5

Fig 5.- After preparation we etch the enamel with 37% orthophosphoric acid for 30 seconds. Then a self etching agent was applied (Scotchbond Universal) and doing it for a minimum of 20 seconds. After this we apply light air pressure for 5-10 seconds. After thinning the bonding layer we polymerize for 60 seconds. Then we put a minimum amount of Bulk fill composite 3M Filtek and then we finish modelling with one A3B mass Filtek Ultimate as a final layer (veneering material) as described in the Bulk and Body technique.

Fig. 6

Fig 6.- Air blocking with glycerin and light curing for 1 minute

Fig. 7

Fig 7.- Polishing with silicone/abrasive wheels

Fig. 8

Fig 8.- If there are not residues from the modeling phase, we can move to polishing without passing through the finishing stage.

Fig. 9

Fig 9.- Final photo after gloss, polishing and rubber dam removal.

Fig. 10

Fig 10.- Photo after rehydration