StampTechnique Part 1
In restorative dentistry many direct composite techniques concentrate on layering protocols by adding composite increments toward each side of the cavity modelling the occlusal surface (1). It is, however, sometimes difficult to “free-hand” reproduce adequately all occlusal topography such as cusps, slopes, grooves, ridges, etc…
In few very speific cases where the occlusal surface is almost intact at the beginning of the restorative procedure a stamp technique can be an interesting alternative to “conventional” direct techniques because it allow us to quickly and easily reproduce exactly the same occlusal surface the patient had at the beginning. The technical feasibility of the so-called Stamp Technique has been proven not only in cavities but for vertical bite reconstruction of worn dentitions (2,3)
Before restoring the tooth was cleaned with prophylaxis paste.
Flowable Composite or even light Curing Dental Dam is first applied to the dental surface to make a kind of mini impression prior to prepping the cavity. Both materials faithfully reproduce occlusal topography. The index is connected to an instrument for easy handling.
Once the cavity has been properly prepared and cleaned is ready to follow the bonding procedures.
A thin layer of bulk fill composite material is applied and light cured. Depending on cavity depth one or two layers should be applied keeping the last layer uncured.
Then a piece of teflon tape is used to cover the occlusal surface to avoid composite sticking to the occlusal stamp previously prepared. The uncured layer of composite is pushed through the teflon piece by pressing the occlusal stamp against the tooth and light cured for 80 seconds.
This is the result after teflon removal and light curing through glycerin gel.
Immediate result after occlusal adjustments, polishing and glossing.
Final result after 3 months post-op.
Another case resolved by using the same Stamp Technique.
Occlusal index made with Curing Dental Dam.
After teflon removal and before final light-curing.
Clinicians must pay very careful attention to properly remove all excess and distorsions using tugnsten burs and silicone points.
Immediate result after occlusal adjustment of both restorations.
And last case to illustrate the optimum results we can achieve with this technique.