Offer Valid: 5/1/13 - 5/31/13 Buy 3 Aquasil Ultra, Aquasil Ultra with B4 or Aquasil Ultra Xtra Standard Packs, Get 1 Free! To receive your free goods, mail a copy of your Patterson invoice to Dentsply Caulk, Attn: 2nd Quarter Offers, 38 West Clarke Ave, Milford, DE 19963 or fax to 800-788-4110. Offers must be redeemed by 6/30/13. Limit 5 redemptions of each offer per doctor. These offers may not be combined with any other Dentsply offers or contract agreements. Please note free goods on invoice.