Sterngold | Attachment Catalog
WORKINGWITHMETAL ATTACHMENTS Depending on the attachment’s design, metal components are anchored in denture acrylic, soldered to a casting, or invested along with a wax pattern and cast against with a dental alloy. Use an alloy with a casting temperature at least 100°F (40°C) below the lowest value of the component’s melting range when casting against an attachment component.
Melting Ranges of Attachments
Melting Range
Attachment Components
Degrees F 2600–2760 2550–2715 1705–1860 1615–1725 3308-3362 2700–2850 1885–2010
Degrees C 1425–1515 1400–1490 930–1015
Ceramacast Ceramicor
Doral Elitor
880–940
Iridium–Platinum
1820–1850 1480–1565 1030–1100
NPS OSV
Attachment Selection In citing common applications for dental attachments, Sterngold is reporting uses adopted by clinical authorities and does not endorse any particular philosophy of treatment. We recommend you consult the dental literature. Measuring For Attachments Sterngold works hard to make using attachments easy for you. In this catalog we provide our best advice on space requirements based on extensive practical experience. Each attachment description lists the minimum space required for placement of the attachment with high assurance of successful, long-term function. Allowances are made for dental casting alloys and denture acrylic that surround or hold the attachment component. With this information you can measure a study cast and decide if an attachment can be used in the available space. Allowances Denture acrylic thickness • Occlusal to extracoronal attachment components, bars, and overdenture attachments (influences height), 1mm • Lateral to attachment components (influences removable component width), 1mm on each side Casting alloy thickness • For root cap coping (influences height), 0.5mm • Between a box preparation axial wall and a metal intracoronal precision attachment female (influences prep depth), 0.4mm
Solder thickness (influences height), 0.3mm
Note: At least 0.5mmof casting alloymust separate the attachment female froma porcelain fused tometal veneer.
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ATTACHMENT CATALOG
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