Block 1 2023 Year 3 Impression

The example of primary stress bearing area is

• Residual ridges

• Maxillary tuberosity

• Rugae area

• Hard palate

FALSE regarding incisive papilla..

• It is a landmark for teeth setting of 11 & 21

• Denture must be relief at this area

• It is a fibrous connective tissue

• Give support to the denture

TRUE regarding retromolar pad area:

• Present at maxillary arch

• Form posterior seal for denture

• Pear shaped rectangular soft tissue

• Denture based covered 1/3 of its surface

Regarding primary impression technique..

• Customised special tray is used

• Zinc oxide eugenol is an example of impression material

• Compound used for extreme resorption of alveolar ridges

• The dentist position during impression making for mandibular is behind of patient

Regarding secondary impression making for complete dentures..

• Border moulding done with green stick

• Alginate used as an impression material

• Perforated stock tray is used

• Also known as preliminary impression

ALL TRUE regarding the ideal requirement of the special tray EXCEPT

• Well adapted to the primary cast

• 2mm relief near the sulcus

• Should not react with the impression material

• Flexible at the flabby ridge area

The material used for construction of special tray at Kulliyyah of Dentistry is

• Light cure resins

• Autopolymerizing acrylic resin

• Vacuum-form poly vinyl

• Thermoplastic materials

ALL TRUE regarding "WINDOW" technique EXCEPT

• It is a selective pressure impression technique

• applied for firm fibrous ridge condition

• Combination of two impression materials

• Border moulding done prior to impression

ALL TRUE regarding functional impression technique EXCEPT

• Used when there is a problem with denture space

• Also known as selective pressure technique

• Visco gel one of the impression material

• Impression making when patient is speaking

ALL TRUE regarding reline and rebase technique EXCEPT:

• Indicated when the denture is not retentive

• It can be temporary or permanent

• Undercut denture area is maintained before relining

• Polyvinylsiloxane is one of the impression materials