1 Dental Waxes DA 122 Dental Materials DA 122 Dental Materials

2 Wax Groups Pattern Processing Impression Pattern Processing Impression

3 Pattern Waxes Hard wax Inlay casting wax: used in crown and bridge –Dark-colored sticks of wax –Melted and applied to die, creates wax pattern used in making crowns and bridges Baseplate wax: used in construction of denture base –Wax sheets heated and formed over models when making Custom trays Denture bases Hard wax Inlay casting wax: used in crown and bridge –Dark-colored sticks of wax –Melted and applied to die, creates wax pattern used in making crowns and bridges Baseplate wax: used in construction of denture base –Wax sheets heated and formed over models when making Custom trays Denture bases

4 Pattern Waxes Inlay Wax Baseplate Wax

5 Processing Waxes Boxing: –Soft, pliable –Forms a wax box wall around impression when pouring a gypsum model, to create base Sticky Wax: –Brittle until melted –Used to adhere fractured gypsum, metal, and porcelain pieces Boxing: –Soft, pliable –Forms a wax box wall around impression when pouring a gypsum model, to create base Sticky Wax: –Brittle until melted –Used to adhere fractured gypsum, metal, and porcelain pieces

6 Processing Waxes (cont’d) Utility Wax: –Soft wax that is adhesive and pliable –Does not require heating –Used to “bead” around impression trays to extend them to fit –Used in orthodontics to brackets and bands until patient gets used to them –Ropes or strips, in various colors Utility Wax: –Soft wax that is adhesive and pliable –Does not require heating –Used to “bead” around impression trays to extend them to fit –Used in orthodontics to brackets and bands until patient gets used to them –Ropes or strips, in various colors

7 Processing Waxes Sticky Wax Boxing Wax Utility Wax

8 Impression Waxes Bite registration waxes-used to obtain patient’s bite Usually contain aluminum or copper particles Supplied in horseshoe shapes, to conform to maxillary/mandibular biting surfaces Bite registration waxes-used to obtain patient’s bite Usually contain aluminum or copper particles Supplied in horseshoe shapes, to conform to maxillary/mandibular biting surfaces