20 Sicilia Periosteal 20 Sicilia Periosteal P20SIC For reflecting and retracting the mucoperiosteum. Where to Buy x Category Dealer PartnersSales RepresentativeStrategic MarketsSchools RepresentativeAccutron™ Equipment Sales Zip Code Find RepresentativeReset Select a category, input a zip code and click on Find Representative, or explore the complete list here.