6 Seating Framework 4 a Test fit framework

(6) Seating Framework 4 (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

(7) Polishing 4 (b) Polishing – 1 Rubber the casting a Use smooth flowing strokes b Use rubber wheels for large areas such as major connectors c Use rubber points for areas you cannot reach with a rubber wheel

(7) Polishing 4 (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

(7) Polishing 4 (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

(7) Polishing 4 Clean casting in ultrasonic cleaner 4 Reseat frameworks on master cast (not blocked out), make adjustments as needed

Review for Mid-term 4 Know functional requirements of a clasp assembly 4 Know survey tools and what each is used for

Review for Mid-term 4 Purpose of RPD • 1 Restore the patient's natural appearance (esthetics) • 2 Restore function without damaging the remaining natural teeth and tissues

Review for Mid-term 4 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

Review for Mid-term 4 A full palate is used when only weak anteriors are left in the mouth

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?

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?

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?

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?

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?

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 globucasting machine? –. What occurs during electrolytic polishing?