ក្នុងរូបខាងក្រោមនេះ តើមួយណាជា treatment procedures ដែលត្រឹមត្រូវ សម្រាប់ធ្មេញនេះ?<br>, Surgical crown lengthening post and core  full coverage crown., Orthodontic extrasion post and core  full coverage crown., Amalgam core  full coverage crown., Extraction  implant placement  implant supported prosthesis., តើគេត្រូវធ្វើការពិនិត្យលើអ្វីខ្លះនៅដំណាក់កាលclinical try-in of a crown? ជ្រើសរើសចំឡើយដែលមិនត្រឹមត្រូវ.?,  Biting force,  Marginal adaptation,  Good stability,  Contours, តើគេប្រើអ្វីដើម្បីពិនិត្យ proximal contact of a fixed prosthesis?,  Artifoil,  Pink wax,  Disclosing wax,  Light bodied silicone, តើគេពិនិត្យ occlusion សម្រាប់ single crown យ៉ាងដូចម្តេច? ប្រយោគទាំងនេះសុទ្ធតែត្រឹមត្រូវ លើកលែងតែ:?4.,  The occlusal contacts of all teeth should be identical with or without the restorations.,  Check in lateral excursion first then MIP.,  Working & non-working interferences must be removed.,  Final occlusion check should be done with 0.0005-inch shim stock. The restorations must hold the shim stock as firm as the natural teeth & release when in lateral movement except group function is chosen as the occlusal scheme., ហេតុអ្វីបានជាយើងមិនអាចប្រើ pure metals in dental castings?,  pure metals have the appropriate physical properties to function in different types of restorations,  pure metals are too expensive in the fabrication of restorations,  pure metals do not have the appropriate physical properties to function in different types of restorations,  pure metals do not have enough corrosion resistance for the fabrication of restorations., Metals ខាងក្រោមជា noble elements, លើកលែងតែ:?,  Gold,  Platinum,  Silver,  Iridium, Metals ខាងក្រោមជា non-noble elements, លើកលែងតែ:?,  Palladium,  Copper,  Chrome,  Titanium, Metals ខាងក្រោមជា rare noble elements, លើកលែងតែ:?,  Osmium,  Rhodium,  Gallium,  Ruthenium, High noble alloy មាន noble metal content ……..wt%?,  <25 wt %,  >60 wt %,  >25 wt %,  >70 wt %, Noble alloy មាន noble metal content ……..wt%?,  <25 wt %,  >60 wt %,  >25 wt %,  >70 wt %, Base metal alloy 􀅭ន noble metal content ……..wt%?, <25 wt %,  >60 wt %,  >25 wt %,  >70 wt %, Base-metal alloysត្រូវបានបែងចែកជា􀄇 2 subcategories គឺ:?, Nickel- & cobalt-based alloys, Silver- & nickel- based alloys,  Cobalt- & chromium- based alloys,  Silver- & chromium- based alloys, ប្រយោគខាងក្រោមសុទ្ធតែតឹ្រមត្រូវលើកលែងតែ:?, single-phase alloy is one that most of its components dissolve in one another.,  single-phase alloy is easier to cast.,  single-phase alloy has lower corrosion rate than multiple-phase alloy,  single-phase alloy is stronger than multiple-phase alloy., ប្រយោគខាងក្រោមសុទ្ធតែតឹ្រមត្រូវលើកលែងតែ:?, Multiple-phase alloy is one that one or more alloy are not soluble in the other.,  Multiple-phase alloy has higher corrosion rate than single-phase alloy.,  Multiple-phase alloy is stronger than single-phase alloy.,  Multiple-phase alloy cannot be etched for bonding cause of its higher corrosion rate, Yield strength of the dental casting alloy គួរតែមាន …………. MPa ដើម្បីចៀសវាង fracture of alloysនៅ high-riskareas ដូចជានៅចន្លោះpontics of a multiple-unit fixed restoration.?, <300 MPa,  >300 MPa,  <200 MPa,  >200 MPa, Solidus is:?, the locus of temperatures above which a given substance is completely solid.,  the locus of temperatures below which a given substance is completely solid.,  the locus of temperatures below which a given substance is partially solid.,  the locus of temperatures below which a given substance is starting to melt., The casting alloys:?, Expand when cool,  Distort when cool,  Shrinks when cool,  Stay the same size when cool, Alloy ដែលមាន high solidus temperature ច្រើនតែ:?, Shrink more than the lower one.,  Shrink less than the lower one.,  Shrink in the same amount as the lower one., Shrink two times less than the lower one., High gold alloy អាចរួមមាឌប្រហែល(shrink for)…………%?, 0.3 to 0.5%,  0.5 to 0.7%,  0.7 to 1 %,  0.1 to 0.2%, Base-metal alloys អាចរួមមាឌប្រហែល (shrink for) …………..%?, 1.5%,  2%,  2.5%,  3%, Alloy ដែលមាន low solidi មាន:?, Greater risk of ill-fitting restorations.,  Less risk of ill-fitting restorations.,  The same risk of ill-fitting restorations.,  No risk of ill-fitting restorations., តើមានវិធីអ្វីខ្លះដើម្បីប៉៉ះប៉ូវ (compensate for) dental alloy shrinkage នៅក្នុងការេធ្វើ a restoration? ជ្រើសរើសចេម្លើយែដលខុស.?, Expansion of the die Application of die spacers,  The use of more alloy than necessary,  The use of special expanding investment mechanisms,  Increasing the burnout temperature of the investment., Corrosion អាច:?, Strengthen the strength of the restoration.,  Release of oxidized components is harmless.,  Produce galvanic shock,  Produce a wooden taste, Coefficient of thermal expansion (CTE) of the alloy ត្រូវបានគេធ្វើឲវា……CTE របស់ porcelain ដូចេនះ porcelain អាចស្ថិតនៅក្នុង compression state នៅពេលដែរវាចុះត្រជាក់, More than,  Less than,  Equal to,  Either more or less than, The porcelain ធន់ទ្រាំនឹង ………………ខ្លាំំងជាងtensile strength ដោយសារតែ brittle characteristic របស់􀀈. ?, Shear strength,  Compressive strength, Bond strength, Fatigue

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