Q. What is S shaped incision?
The S - shaped incision is indicated where a papilla needs to be developed and was first described by Palacci. This type of incision is essentially designed to create a small pedicle flap, which is repositioned into the interdental area.For multiple implants placed unilaterally the pedicel flaps are designed to the position the pedicle on the mesial aspect of the implant. The height of the ridge, the interdental space and thickness of the tissue influence the width of the pedicle. After attachment of the abutment the S-shaped incision started on its distal aspect. The clinician should be able to visualize the final position of the pedicle flap on the mesial aspect of the abutment. The first part of the incision is full thickness and the second part is a split - thickness incision of the periosteum, carried out sub-epithelially. This provides mobility for the pedicle flap without creating a cleft within the marginal epithelium. The first pedicle should be positioned within.