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(6) Seating Framework

(6) Seating Framework. (a) Test fit framework on duplicate master cast 1 Use duplicate master cast for initial seating 2 Inspect natural teeth and tissue side of framework for defects, Remove any imperfections 3 May need to use a disclosing medium

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(6) Seating Framework

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  1. (6) Seating Framework • (a) Test fit framework on duplicate master cast • 1 Use duplicate master cast for initial seating • 2 Inspect natural teeth and tissue side of framework for defects, Remove any imperfections • 3 May need to use a disclosing medium • 4 Framework is seated when all rests are in full contact with their rest seats • 5 Reseat frameworks on master cast (not blocked out), make adjustments as needed

  2. (7) Polishing • (b) Polishing • 1Rubber the casting aUse smooth flowing strokes bUse rubber wheels for large areas such as major connectors c Use rubber points for areas you cannot reach with a rubber wheel

  3. (7) Polishing • (b) Polishing d Use rubber points for approach arms, clasps, lingual plating, and rests e Do not rubber tissue bearing surfaces of castings or the tooth side of rests f If scratches are found at this point go back to rough finishing

  4. (7) Polishing • (c) Final polish • 1 Low-shine compound • a Soft bristle brush on high speed lathe • b Clean casting in ultrasonic cleaner • 2 Hi-shine compound • a Soft bristle brush on high speed lathe

  5. (7) Polishing • Clean casting in ultrasonic cleaner • Reseat frameworks on master cast (not blocked out), make adjustments as needed

  6. Review for Mid-term • Know functional requirements of a clasp assembly • Know survey tools and what each is used for

  7. Review for Mid-term • Purpose of RPD • 1 Restore the patient's natural appearance (esthetics) • 2 Restore function without damaging the remaining natural teeth and tissues

  8. Review for Mid-term • Chrome-cobalt alloys: • .Are more rigid than gold • .melt at higher temperatures than gold • .are harder than gold • .have a higher tensile strength than gold

  9. Review for Mid-term • A full palate is used when only weak anteriors are left in the mouth

  10. Review for Mid-term • .Where does a toothborne partial denture get support from? • .Where does a free end saddle partial denture get support from? • .What type of major connector would you use for long span maxillary distal extension case?

  11. Review for Mid-term • .From what direction does a suprabulge or infrabulge clasp approach the undercut? • .Is an I-bar clasp a suprabulge or infrabulge clasp? • .What is an akers clasp?

  12. Review for Mid-term • .What is a roach clasp? • .What is a mesiodistal clasp? • .What is a simple circlet clasp? • .What is a back action clasp?

  13. Review for Mid-term • .What is an embrasure clasp? • .What clasp is recommended for a single tooth that stands isolated between edentulous spaces of a toothborne quadrant? • .Why is a roach type clasp used where there is a free end extension?

  14. Review for Mid-term • .What type of clasp is best to use when molars have a severe anterior tilt? • .What is the gauge of the relief wax used on the saddle areas? • .What is the purpose of the finish lines?

  15. Review for Mid-term • .What is the water powder ratio for the outer investment? • .What is the purpose of the sprue during casting? • .What is the purpose of the cover on the globucast casting machine? • .What occurs during electrolytic polishing? • Purpose of RPD • 1 Restore the patient's natural appearance (esthetics) • 2 Restore function without damaging the remaining natural teeth and tissues • Chrome-cobalt alloys: • .Are more rigid than gold • .melt at higher temperatures than gold • .are harder than gold • . have a higher tensile strength than gold • A full palate is used when only

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