Operative Dentistry II Test

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Operative Dentistry II Test

 

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Classification of amalgam based on shape of particle:

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αž“αž·αž™αž˜αž“αŸαž™Polymerisation shrinkage

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αž”αŸ’αžšαž’αž”αŸ‹ Cavity Class I αž‘αŸ†αž αŸ†αž’αŸ†αžšαž”αžŸαŸ‹ Dr. Black αžαžΎαž˜αžΆαž“αž‚αž»αžŽαžœαž·αž”αžαŸ’αžαž·αž’αŸ’αžœαžΈαžαŸ’αž›αŸ‡? αž‚αŸ’αžšαžΌαž–αŸαž‘αŸ’αž™αž’αŸ’αž˜αŸαž‰αž“αž·αž™αž˜αž”αž·αžαž”αŸ‰αŸ‡ composite

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αžαž˜αŸ’αžšαžΌαžœαž€αžΆαžšαžŸαž˜αŸ’αžšαžΆαž”αŸ‹ αž‘αž“αŸ’αžαž”αžŽαŸ’αžŒαž·αž

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αž‡αž˜αŸ’αžšαŸ…αž‚αŸ’αžšαž”αŸ‹αž”αŸ’αžšαž’αž”αŸ‹ cavities αžšαž”αžŸαŸ‹ Dr. Black αžαžΎαž‚αŸαž™αž›αŸ‹αžŠαžΌαž…αž˜αŸ’αžαŸαž…αž”αžΆαž“αž‚αŸαž’αž“αž»αžœαžαŸ’αžαž’αŸ’αžœαžΎ αžšαž αžΌαžαžŠαž›αŸ‹αžŸαŸ’αžšαž‘αžΆαž”αŸ‹ αž—αŸ’αž›αž»αž€αž’αŸ’αž˜αŸαž‰(dentin)?

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αžŸαž˜αŸ’αž–αžΆαž’-αž—αžΆαž–αžαžΆαž“αžαžΉαž„αž“αŸƒαž’αŸ’αž“αžΉαž˜-αž‘αž˜αŸ’αžšαž’αž˜αŸ’αž˜αžαžΆ ( Compresion on simple beam) αžαžΎαž‚αŸαžŸαž“αŸ’αž˜αžαž™αž€αžαŸ†αž”αž“αŸ‹αž‡αžΆαž‘αžΈαžαžΆαŸ†αž„αž’αž–αŸ’αž™αžΆαž€αŸ’αžšαž·αž?

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Principal characteristic Class II atypical cavity preparation

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αžαžΎαž“αŸ…αž–αŸαž›αžŽαžΆαžŠαŸ‚αž›αž‚αŸαžŸαž“αŸ’αž˜αžαŸ‹αžαžΆαžŠαž»αŸ†αžαŸ’αž“αžΆαŸ† Amalgam αž˜αžΆαž“αž€αŸ†αž αžΆαž”αŸ‹αžαŸ’αžšαžΉαž˜αžαŸ’αžšαžΌαžœ?

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αž€αŸ’αž“αž»αž„αž€αžΆαžšαžŸαžΆαž„αžŸαž„αŸ‹αž”αŸ’αžšαž’αž”αŸ‹ cavity class II αžšαž”αžŸαŸ‹ Dr.Black αžαžΎαžŸαž˜αŸ’αž—αžΆαžšαŸˆαžŽαžΆαž˜αž½αž™αžŠαŸ‚αž›αž”αž„αŸ’αž€αž’αŸ„αž™αžαŸ’αž“αžΆαŸ† αž”αž·αžαž”αŸ‰αŸ‡αž˜αžΆαž“αžŸαž—αžΆαž–αžαžΌαž„ αž•αž?

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αž’αŸ’αž˜αŸαž‰αžŠαŸ‚αž›αž’αŸ’αžœαžΎαž€αžΆαžšαžŸαžΆαž„αžŸαž„αŸ‹αžšαž½αž…αžŠαŸ†αž”αžΌαž„ αž•αŸ’αž‘αŸƒαžαžΆαž„αž›αžΎαž˜αžΆαž“αž—αžΆαž–αž‚αŸ’αžšαžΎαž˜αŸ— αžαžΎαž˜αžΆαž“αž•αž›αž’αŸ’αžœαžΈαžŠαŸ‚αžšαžŠαž›αŸ‹αž€αŸ†αžŽαžΆαŸ†αžαžΆαŸ†αž’αŸ’αž˜αŸαž‰?

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αž™αŸ„αž„αžαžΆαž˜αž›αž€αŸ’αžαžŽαŸˆαžŸαž˜αŸ’αž”αžαŸ’αžαž·αžšαžΌαž”αžšαž”αžŸαŸ‹ Amalgam αžαžΎαž˜αž‡αŸ’αžˆαžαŸ’αžαž·αž€αŸˆ ឬ αžŸαŸ’αžœαŸαž™αž—αžΆαž–αž˜αžΆαž“αž“αŸαž™αžŠαžΌαž…αž˜αŸ’αžαŸαž…?

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αž“αž·αž™αž˜αž“αŸαž™ Material Creep?

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αž™αŸ„αž„αžαžΆαž˜αž€αŸ†αžŽαŸ„αž„αžšαž”αžŸαŸ‹αž€αŸ†αžŽαž»αŸ‡αž’αŸ’αž˜αŸαž‰ αž–αŸαž›αžšαŸ€αž”αž…αŸ†αž”αŸ’αžšαž’αž”αŸ‹ cavity class II by Dr. Black αž‚αŸ’αžšαž”αŸ‹αž‡αž‰αŸ’αž‡αžΆαŸ†αž„ αž’αžΆαž…αž’αŸ’αžœαžΎαž”αžΆαž“αž˜αž»αŸ† 90 αžŠαžΊαž€αŸ’αžšαŸ αž›αž»αŸ‡αžαŸ’αžšαžΆαžαŸ‚ αž•αŸ’αž‘αŸƒαž‡αž˜αŸ’αžšαžΆαž›(slide cusps) αž˜αžΆαž“αž”αŸ‰αž»αž“αŸ’αž˜αžΆαž“αžŠαžΊαž€αŸ’αžšαŸ?

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αž€αžΆαžšαžŸαžΆαž„αžŸαž„αŸ‹αž’αŸ’αž˜αŸαž‰αžŠαŸ‚αž›αž’αž“αž»αžœαžαŸ’αžαžœαž·αž’αžΈαžŸαžΆαžŸαŸ’αžαŸ’αžšαžŠαŸ„αž™αž”αŸ’αžšαž–αŸαž“αŸ’αž’αžŸαžΆαžšαž’αžΆαžαž»αžŸαŸ’αž’αž·αž(Bonding system) αž˜αž·αž“αžαŸ’αžšαžΉαž˜αžαŸ’αžšαžΌαžœ αžαžΎαžœαžΆαž”αž„αŸ’αž€αž•αž›αž’αŸ’αžœαžΈαž“αŸ…αž–αŸαž›αž€αŸ’αžšαŸ„αž™?

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αž“αŸ…αž–αŸαž›αžŽαžΆαžŠαŸ‚αž›αžαŸ’αž“αžΆαŸ† composite αž”αž‰αŸ’αž…αŸαž‰αž₯αž‘αŸ’αž’αž·αž–αž›αž…αŸαž‰αž˜αž€αž€αŸ’αžšαŸ…αžŠαž»αŸ†αžαŸ’αž“αžΆαŸ†?

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αžŸαž˜αžΆαžŸαž’αžΆαžαž»αž•αŸ’αžŸαŸ† αž›αžΆαž™αžŠαžΎαž˜αŸ’αž”αžΈαž”αž„αŸ’αž€αžΎαžαžαŸ’αž“αžΆαŸ† Amalgam αž’αž„αŸ’αž‚αžαžΌαž…αž›αŸ’αž’αž·αžαŸ—αž˜αž·αž“αžšαž›αžΆαž™αž…αžΌαž›αž‚αŸ’αž“αžΆαž‘αžΆαŸ†αž„αž’αžŸαŸ‹ αžαžΎαžœαžΆαž”αž„αŸ’αž€αž€αžΆαžšαž”αŸ‚αž€αž”αžΆαž€αŸ‹αž˜αž»αž“αž‚αŸ αž”αŸ’αžšαžˆαž˜αž“αžΉαž„αžŸαž˜αŸ’αž–αžΆαž’αž’αŸ’αžœαžΈ?

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αž‚αŸ„αž›αž”αŸ†αžŽαž„ Operative dentistry

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αžšαžΌαž”αž˜αž“αŸ’αž Setting reaction of amalgam phase gamma1 :

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αž€αžΆαžšαžšαŸ€αž”αž…αŸ† αž”αŸ’αžšαž’αž”αŸ‹ cavity αž€αŸ’αž“αž»αž„αž…αŸ†αžŽαžΆαžαŸ‹αžαŸ’αž“αžΆαž€αŸ‹αž‘αžΈαŸ£αžŠαŸ‚αž›αž˜αžΆαž“αžšαžΆαž„αž€αž“αŸ’αž‘αž»αž™αž€αŸ†αž”αŸ’αžšαž»αž€(Dove tail) αž…αŸ’αžšαžΎαž“αž’αž“αž»αžœαžαŸ’αžαž“αŸ…αž–αŸαž›αžŽαžΆ?

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αž•αŸ’αž‘αŸƒαž‡αž‰αŸ’αž‡αŸ†αž„Class I cavity αžαžΌαž…αž›αžΎ (convergence occlusal) αž€αžΆαžšαžšαž„αž₯αž‘αŸ’αž’αž·αž–αž›αž€αŸ†αž›αŸ† αž˜αžΆαž“αž›αž€αŸ’αžαžŽαŸˆαžŠαžΌαž…αž˜αŸ’αžαŸαž…?

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αž αŸαžαž»αž’αŸ’αžœαžΈαž”αžΆαž“αž‡αžΆαž”αŸ’αžšαž’αž”αŸ‹Cavity Class III αž˜αž·αž“αž’αž“αž»αžœαžαŸ’αžαž’αŸ’αžœαžΎαž˜αžΆαž“αžšαžΆαž„ Dove tail?

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αž€αž˜αŸ’αžšαžΆαžŸαŸ‹αž—αŸ’αž›αž»αž€αž’αŸ’αž˜αŸαž‰αžŠαŸ‚αž›αžŸαžΆαž„αžŸαž„αŸ‹ (reparation dentin) αžšαž™αŸˆαž–αŸαž›αŸ§αžŸαž”αŸ’αžαžΆαž αŸŒ

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αž›αž€αŸ’αžαžŽαŸˆαžŸαž˜αŸ’αž”αžαŸ’αžαž·αž›αŸ„αž αŸˆ (Ag) αž•αŸ’αžŸαŸ†αž›αžΆαž™αžŠαžΎαž˜αŸ’αž”αžΈαž”αž„αŸ’αž€αžΎαž Amalgam

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αž€αž˜αŸ’αžšαžΉαžαž”αŸ†αžšαŸ‚αž”αž˜αŸ’αžšαž½αž›αžŸαžΈαžαž»αžŽαŸ’αž αž—αžΆαž– αžšαž”αžŸαŸ‹αžŸαžŸαŸƒαž”αŸ’αžšαžŸαžΆαž‘αž’αŸ’αž˜αŸαž‰αž…αž“αŸ’αž›αŸ„αŸ‡αž–αžΈαŸˆ

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αžŸαŸ†αžŽαžΉαž€ (atrition)αžŠαžΎαž˜αž αŸαžαž»αž…αž˜αŸ’αž”αž„αž”αž„αŸ’αž€αž‘αžΎαž„αžŠαŸ„αž™αžŸαžΆαžšαž’αŸ’αžœαžΈ?

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αž™αŸ„αž„αžαžΆαž˜αž›αž€αŸ’αžαžŽαŸˆαž‚αžΈαž˜αžΈαžŸαžΆαžŸαŸ’αžαŸ’αžšαžšαž”αžŸαŸ‹αžαŸ’αž“αžΆαŸ†αžαžΎ Secondary bonding αž”αŸ’αžšαžαž·αž€αž˜αŸ’αž˜αžšαž”αžŸαŸ‹αžœαžΆαž‘αžΆαž€αŸ‹αž‘αž„αž‘αŸ…αž“αžΉαž„αž’αŸ’αžœαžΈ?

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Indication of amalgam restoration:

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តើ creep αž›αžΎαžαž‘αžΎαž„αž“αŸ…αž–αŸαž›αžŽαžΆαž€αŸ’αž“αž»αž„αžŠαŸ†αžŽαžΆαž€αŸ‹αž€αžΆαž›αž”αŸ’αžšαžαŸ’αžαž·αž€αž˜αŸ’αž˜ Amalgam

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αž€αžΆαžšαžŸαžΆαž„αžŸαž„αŸ‹αž”αŸ’αžšαž’αž”αŸ‹ cavity class I αžαŸ’αž‚αžΆαž˜αž’αŸ†αžαŸ†αž”αž“αŸ‹αž”αŸ‰αŸ‡αž‚αŸ’αž“αžΆ αž“αž·αž„αž’αŸ’αž˜αŸαž‰αž”αŸ’αžšαžˆαž˜αžαž·αž…αžαž½αž… αžαžΎαž€αŸ†αž›αŸ† αž‘αž˜αŸ’αž„αž“αŸ‹ αžαžΎαžŸαž˜αŸ’αž–αžΆαž’ tension αž”αŸ’αžšαŸ‚αž”αŸ’αžšαž½αž›αžŠαžΌαž…αž˜αŸ’αžαŸαž…?

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αž€αžΆαžšαž”αŸ’αžšαžΎαž”αŸ’αžšαžΆαžŸαŸ‹αž§αž”αž€αžšαžŽαŸαž‡αŸ†αž“αž½αžŸαž›αž½αžŸ(Wire) αžšαžΆαž„αžŠαžΌαž…αž˜αŸ’αžαŸαž… αž€αŸ’αž“αž»αž„αž€αžΆαžšαžŸαž„αŸ‹αžŸαž„αŸ‹αž’αŸ’αž˜αŸαž‰ αžŸαŸ†αžšαžΆαž”αŸ‹αž”αŸ’αžšαž’αž”αŸ‹ Cavity Class IV αžšαž”αžŸαŸ‹αž›αŸ„αž€ Dr. Black?

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αž˜αž»αžαž„αžΆαžšαžšαž”αžŸαŸ‹αžŸαŸ’αžšαž‘αžΆαž”αŸ‹αž—αŸ’αž›αž»αž€αž’αŸ’αž˜αŸαž‰

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αž‡αžΆαž‰αžΉαž€αž‰αžΆαž”αŸ‹αž‚αŸαžŸαž„αŸ’αž€αŸαžαžƒαžΎαž‰αž“αŸ…αž–αŸαž›αžŽαžΆ αžŠαŸ†αžŽαžΆαž€αŸ‹αž€αžΆαž›phase beta, beta1, beta2 αž€αŸ’αž“αž»αž„αž”αŸ’αžšαžαŸ’αžαž·αž€αž˜αŸ’αž˜ Amalgam

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αžšαžΌαž”αž˜αž“αŸ’αž Setting reaction of amalgam epsilon:

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αž’αŸ’αž“αž€αž‡αž˜αŸ’αž„αžΊαž˜αŸ’αž“αžΆαž€αŸ‹αž—αŸαž‘αžŸαŸ’αžšαžΈ αž’αžΆαž™αž» αŸ’αŸ’αž†αŸ’αž“αžΆαŸ†αž€αŸ’αžšαžΈαž€αŸ’αžšαž”αžΆαž“αž˜αž€αž–αž·αž“αž·αžαŸ’αž™ αž–αŸ’αž™αžΆαž”αžΆαž›αž‡αž˜αŸ’αž„αžΊαž˜αžΆαžαŸ‹αž’αŸ’αž˜αŸαž‰αŸ” αž‚αŸ’αžšαžΌαž–αŸαž‘αŸ’αž™αž’αŸ’αž˜αŸαž‰αž–αž·αž“αž·αžαŸ’αž™αžƒαžΎαž‰αž˜αžΆαž“αžšαŸ„αž‚αž–αž»αž€αž’αŸ’αž˜αŸαž‰αž…αŸ’αžšαžΎαž“αž›αžΎαžŸαž›αž»αž” αžŸαŸ’αž‘αžΎαžαŸ‚αž‚αŸ’αžšαž”αŸ‹αž’αŸ’αž˜αŸαž‰αž€αŸ’αžšαŸ„αž™αŸ” αžαžΎαž‚αŸ’αžšαžΌαž–αŸαž‘αŸ’αž™αž’αŸ’αž˜αŸαž‰αžαŸ’αžšαžΌαžœαž‡αŸ’αžšαžΎαžŸαžšαžΎαžŸαžαŸ’αž“αžΆαŸ†αžŽαžΆαžŸαŸ†αžšαžΆαž”αŸ‹αž‚αžΆαžαŸ‹?

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αž’αž„αŸ’αž‚αž’αŸŠαžΈαž™αŸ‰αž»αž„ (ion) αžšαž”αžŸαŸ‹αž›αŸ„αž αŸ‡αžŽαžΆαžŸαŸ’αž›αŸ‡αžŠαŸ‚αž›αž’αžΆαž…αž™αž€αž‘αŸ…αž•αŸ’αžŸαŸ†αž›αžΆαž™αž‡αžΆαž˜αž½αž™αžαŸ’αž“αžΆαŸ† composite

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αž›αŸ’αž”αžΏαž“αžœαž·αž›αž‡αž»αŸ†αžšαž”αžŸαŸ‹αž˜αŸ’αž‡αž»αž›αž€αžΆαžαŸ‹αž’αŸ’αž˜αŸαž‰αž–αŸαž›αžšαŸ€αž”αž…αŸ†αž”αŸ’αžšαž’αž”αŸ‹ cavity αž”αŸ’αžšαž αžΆαž€αŸ‹αž”αŸ’αžšαž αŸ‚αž›αž”αŸ‰αž»αž“αŸ’αž˜αžΆαž“αž‚αž·αžαž‡αžΆαž›αŸ’αž”αžΏαž“αž˜αž’αŸ’αž™αž˜?

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αž€αŸ’αž“αž»αž„αžœαž·αž’αžΈαžŸαžΆαžŸαŸ’αžšαŸ’αžαž€αžΆαžšαž–αžΆαžšαž”αžŽαŸ’αžαžΌαž›αžŸαžšαžŸαŸƒαž”αŸ’αžšαžŸαžΆαž‘αž’αŸ’αž˜αŸαž‰(base on pulp protection) αžαžΎαžαŸ†αž”αž“αŸ‹αž¬αž€αž˜αŸ’αžšαžΆαžŸαŸ‹αžαŸ’αž“αžΆαŸ†αž”αŸ‰αž»αž“αŸ’αž˜αžΆαž“αžŠαŸ‚αž›αž‡αŸ†αž“αž½αž™αžŠαž›αŸ‹αžŸαŸ’αžšαž‘αžΆαž”αŸ‹αž’αŸ’αž˜αŸαž‰αžŠαŸ‚αž›αžšαž€αŸ’αžŸαžΆαž‘αž»αž€?

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αžŸαŸ†αžšαžΆαž”αŸ‹αž”αŸ’αžšαž’αž”αŸ‹ cavity class IV by Dr. Black αž‘αŸ†αž αŸ†αž’αŸ† αž€αžΆαžšαž’αŸ’αžœαžΎαž…αž„αŸ’αž’αžΌαžš-αž‚αž“αŸ’αž›αžΆαž€αŸ‹αž‘αžΆαž€αŸ‹αž‡αžΆαž”αŸ‹(Retention form) αž“αŸ…αž•αŸ’αž‘αŸƒαž€αžΆαžαŸ‹(incisal bord) αž’αžΆαž…αž’αŸ’αžœαžΎαž”αžΆαž“αž›αŸ’αž’αž›αžΎαž’αŸ’αž˜αŸαž‰αž˜αžΆαž“αžšαžΌαž”αžšαžΆαž„αžŠαžΌαž…αž˜αŸ’αžαŸαž…?

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αž™αŸ„αž„αžαžΆαž˜αž›αž€αŸ’αžαžŽαŸˆαž‚αžΈαž˜αžΈαžŸαžΆαžŸαŸ’αžšαŸ’αžαžšαž”αžŸαŸ‹αžαŸ’αž“αžΆαŸ† តើ Primary αž”αŸ’αžšαžαž·αž€αž˜αŸ’αž˜αžšαž”αžŸαŸ‹αžœαžΆαž‘αžΆαž€αŸ‹αž‘αž„αž‘αŸ…αž“αžΉαž„αž’αŸ’αžœαžΈ?

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αžαŸ’αž“αžΆαŸ† Amalgam αžŠαŸ‚αž›αžŸαžΆαž„αžŸαž„αŸ‹αž’αŸ’αž˜αŸαž‰αžŠαŸ„αž™αž”αŸ’αžšαž–αŸαž“αŸ’αž’αžŸαžΆαžšαž’αžΆαžαž»αžŸαŸ’αž’αž·αž(Bonding system)αžŸαž˜αŸ’αžšαžΆαž”αŸ‹αž”αŸ’αžšαž’αž”αŸ‹ Cavity αžŠαŸ‚αž›αž˜αžΆαž“αž›αž€αŸ’αžαžŽαŸˆ-αž‚αŸ’αžšαŸ„αž„ αžŠαžΌαž…αž˜αŸ’αžαŸαž…?

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What is the cause of the biocompatibility of composite?

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αž€αžΆαžšαž€αžΆαžαŸ‹αž…αŸ’αžšαžΉαž”-αž”αž‰αŸ’αž†αž·αžαž‚αŸ‚αž˜-រឹម ( Bevel cavo-surface) αž”αŸ’αžšαž’αž”αŸ‹Cavities αž“αŸ…αžŸαŸ’αžšαž‘αžΆαž”αŸ‹αž€αžΆαž…αžΆαž’αŸ’αž˜αŸαž‰ αžαžΎαž€αž˜αŸ’αžšαž·αžαž˜αž»αŸ†αž”αŸ‰αž»αž“αŸ’αž˜αžΆαž“αžŠαžΊαž€αŸ’αžšαŸαžŠαŸ‚αž›αž”αž„αŸ’αž€αž αžΆαž“αž·αž—αŸαž™αžαŸ’αž›αžΆαŸ†αž„αž”αŸ†αž•αž»αžαžŠαž›αŸ‹αžŸαŸ’αžšαž‘αžΆαž”αŸ‹ prisms?

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Classification of amalgam based on shape of particle:

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αž€αŸ’αž“αž»αž„αž€αžΆαžšαžŸαžΆαž„αžŸαž„αŸ‹αž’αŸ’αž˜αŸαž‰αž‘αžΎαž„αžœαž·αž‰αžαŸ†αž”αž“αŸ‹αž‡αž·αžαž’αž‰αŸ’αž…αžΆαž‰αž€αž˜αŸ’αžšαž·αžαž‘αžΈαŸ’ (level2)αž‚αŸαž‡αŸ’αžšαžΎαžŸαžšαžΎαžŸαžœαž·αž’αžΈαžŸαžΆαžŸαŸ’αžšαŸ’αžαžŽαžΆ?

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αž“αž·αž™αž˜αž“αŸαž™ percolation αž‚αžΊαŸˆ

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αž“αŸ…αž€αŸ’αž“αž»αž„αž€αŸ’αžšαž»αž˜ composite αžŸαž˜αŸαž™αžαŸ’αž˜αžΈ(recent advance in composite) αž˜αž½αž™αžŽαžΆαžŠαŸ‚αž›αž‚αŸαž›αžΆαž™ αžŸαžΆαžšαž‡αžΆαžαž· theor αž…αŸ’αžšαžΎαž“αž‡αžΆαž„αž‚αŸ?

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αžαžΎαž›αž€αŸ’αžαžŽαŸˆαžŸαž˜αŸ’αž”αžαŸ’αžαž·αž–αž·αžŸαŸαžŸαžšαž”αžŸαŸ‹αž›αŸ„αž αŸˆ Gallium (Ga) αžŠαŸ‚αž›αž”αŸ’αžšαžΎαž‡αŸ†αž“αž½αžŸαž›αŸ„αž αŸˆαž”αžΆαžšαŸ‰αž(Hg) αž‚αžΊαž’αŸ’αžœαžΈ?

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αž‚αŸ’αžšαž”αŸ‹αž”αŸ’αžšαž’αž”αŸ‹ cavityαžšαž”αžŸαŸ‹Dr. Black αž€αŸ’αžšαŸ„αž™αž€αžΆαžšαžŸαžΆαž„αžŸαž„αŸ‹ តើαž₯αž‘αŸ’αž’αž·αž–αž›αž€αŸ†αž›αžΆαŸ†αž„-αž‘αž˜αŸ’αž„αž“αŸ‹-αžŸαž˜αŸ’αž–αžΆαž’ αžαŸ’αž›αžΆαŸ†αž„αž€αŸ’αž›αžΆαž αž½αžŸαžŠαŸ‚αž“αž€αŸ†αžŽαžαŸ‹αž’αŸ’αžœαžΈαžŠαŸ‚αž›αž”αž„αŸ’αž€αž€αžΆαžšαž”αŸ‚αž€αž”αžΆαž€αŸ‹αžŠαž›αŸ‹αžŸαŸ’αžšαž‘αžΆαž”αŸ‹αž’αŸ’αž˜αŸαž‰αžαžΆαž„αž€αŸ’αžšαŸ…?

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αžαžΎαž‚αŸαž’αŸ„αž™αžαž˜αŸ’αž›αŸƒαžαŸ’αž–αžŸαŸ‹αž”αŸ†αž•αž»αžαžŸαŸ†αžšαžΆαž”αŸ‹ configuration or β€œC Factor” αž€αŸ’αž“αž»αž„αž…αŸ†αžŽαžΆαžαŸ‹αžαŸ’αž“αžΆαž€αŸ‹αž”αŸ’αžšαž’αž”αŸ‹ cavity ណអ?

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αž…αž“αŸ’αž›αŸ„αŸ‡αž”αŸ‰αž»αž“αŸ’αž˜αžΆαž“αžšαž™αŸˆαžŠαž»αŸ† Amalgam αž“αž·αž„αžŸαŸ’αžšαž‘αžΆαž”αŸ‹αž’αŸ’αž˜αŸαž‰αžŠαŸ‚αž›αž…αžΆαž€αŸ‹αž‘αž»αž€ microleckage in amalgam?

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αž”αŸ’αžšαž’αž”αŸ‹ cavity class II αžšαž”αžŸαŸ‹ Dr. Black αž•αŸ’αž‘αŸƒ O.D αžŸαŸ†αžšαžΆαž”αŸ‹αžαŸ’αž‚αžΆαž˜αž‘αžΈαŸ£ αžαžΎαžαŸ’αž“αžΆαŸ†αž’αŸ’αžœαžΈαžŠαŸ‚αž›αž”αŸ’αžšαžŸαžΎαžšαžŸαŸ†αžšαžΆαž”αŸ‹αžŸαžΆαž„αžŸαž„αŸ‹?

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αž€αŸ’αž“αž»αž„αž€αžΆαžšαžšαŸ€αž”αž…αŸ†αž”αŸ’αžšαž’αž”αŸ‹ cavity αžαžΎαžŸαžŽαŸ’αž‹αžΆαž“ αž‘αž˜αŸ’αžšαž„αŸ‹αž„αžΆαž™αžŸαŸ’αžšαž½αž›(convenience form) αž…αŸ’αžšαžΎαž“αž’αž“αž»αžœαžαŸ’αžαž’αŸ’αžœαžΎ αž“αŸ…αž’αŸ’αž˜αŸαž‰αžŽαžΆ?

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αž™αŸ„αž„αžαžΆαž˜αž€αŸ†αžŽαŸ„αž„αžšαž”αžŸαŸ‹αž€αŸ†αžŽαž»αŸ‡αž’αŸ’αž˜αŸαž‰ αž–αŸαž›αžšαŸ€αž”αž…αŸ†αž”αŸ’αžšαž’αž”αŸ‹ cavity class II by Dr. Black αžšαžΆαž„ αžšαž½αž˜αž•αŸ’αž‘αŸƒαž‘αŸ†αž–αžΆαžš (convergence occlusal) αž–αŸαž›αžŠαŸ‚αž›αž•αŸ’αž‘αŸƒαž‡αž˜αŸ’αžšαžΆαž›αž˜αžΆαž“ αž”αŸ‰αž»αž“αŸ’αž˜αžΆαž“αžŠαžΊαž€αŸ’αžšαŸ?

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តើ Efects of aging αž€αžΎαžαž˜αžΆαž“αž›αžΎαž’αŸ’αž˜αŸαž‰αž˜αž“αž»αžŸαŸ’αžŸαž€αŸ’αž“αž»αž„αž…αž“αŸ’αž›αŸ„αŸ‡αž’αžΆαž™αž»αž”αŸ‰αž»αž“αŸ’αž˜αžΆαž“?

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αž…αŸ†αž–αŸ„αŸ‡αž’αŸ’αž˜αŸαž‰αžŠαŸ‚αž›αž”αŸ‚αž€αž”αžΆαž€αŸ‹αž‚αŸ’αžšαŸ„αž„αž…αŸ’αžšαžΎαž“αžαžΎαž”αž…αŸ’αž…αŸαž€αž‘αŸαžŸαž”αŸ’αžšαžΎαž”αŸ’αžšαžΆαžŸαŸ‹αž§αž”αž€αžšαžŽαŸαž‡αŸ†αž“αž½αž™ αž˜αž½αž™αžŽαžΆαžŠαŸ‚αž›αž’αŸ’αž“αž€αž™αž›αŸ‹αžαžΆαž‡αžΆαž”αŸ‹αž›αŸ’αž’αž”αŸ’αžšαžŸαžΎαž”αŸ†αž•αž»αž?

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αž”αŸ’αžšαž’αž”αŸ‹ cavity Class V αžšαŸ€αž”αž…αŸ†αž’αŸ’αžœαžΎαž›αžΎαž’αŸ’αž˜αŸαž‰αžŽαžΆαžαŸ’αž›αŸ‡?

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αžšαžΌαž”αž˜αž“αŸ’αžαžαŸ’αžšαžΉαž˜αžαŸ’αžšαžΌαžœ Hydroxyapatitis

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αž’αŸ’αž˜αŸαž‰αžαŸ’αž‚αžΆαž˜αž€αŸ’αžšαŸ„αž™αžŠαŸ‚αž›αžŸαžΆαž„αžŸαž„αŸ‹αžŠαŸ„αž™αžαŸ’αž“αžΆαŸ† composite αž™αžΌαžšαž†αŸ’αž“αžΆαŸ†αž αžΎαž™αž˜αžΆαž“αžŸαŸ†αžŽαžΉαž€αžαŸ’αž›αžΆαŸ†αž„ αžαžΎαžœαžΆαž”αž„αŸ’αž€αž αž“αž·αž—αŸαž™αž’αŸ’αžœαžΈαžŸαŸ†αžšαžΆαž”αŸ‹ αž’αŸ’αž“αž€αž‡αž˜αŸ’αž„αžΊ?

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αž›αž€αŸ’αžαžŽαŸˆαžŸαž˜αŸ’αž”αžαŸ’αžαž·αžšαž”αžŸαŸ‹αžŸαŸ†αžŽαžšαž”αŸ‰αžΆαž αžΆαŸ†αž„ Tin αžŠαŸ‚αž›αž”αž„αŸ’αž€αžΎαž Amalgam

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αž‚αž»αžŽαžŸαž˜αŸ’αž”αžαŸ’αžαž·αžšαž™αŸ‡αž”αŸ’αžšαžœαŸ‚αž„αžšαžΉαž˜-αž‚αŸ‚αž˜(Bewelcavosurface line)αžŠαŸ‚αž›αž€αžΆαžαŸ‹αž”αž‰αŸ’αž†αž·αž?

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