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Questions and Answers
What is the difference between a true solution and a suspension?
What is the difference between a true solution and a suspension?
- The dispersed phase in a suspension can't be seen by the naked eye.
- Particle size of the dispersed phase is large in a true solution. (correct)
- A true solution involves solid particles while a suspension involves liquid particles.
- The dispersed phase in a true solution is insoluble in the dispersion medium.
How are reversible hydrocolloids different from irreversible hydrocolloids?
How are reversible hydrocolloids different from irreversible hydrocolloids?
- Irreversible hydrocolloids involve primary bond formation. (correct)
- Reversible hydrocolloids are stronger than irreversible hydrocolloids.
- Reversible hydrocolloids involve chemical reactions.
- Irreversible hydrocolloids form secondary bonds upon gelation.
Which type of colloid involves a liquid dispersed phase instead of a solid?
Which type of colloid involves a liquid dispersed phase instead of a solid?
- Suspension
- Emulsion (correct)
- Gel
- Sol
What defines hydrocolloids?
What defines hydrocolloids?
What causes agglomeration in hydrocolloids leading to gelation?
What causes agglomeration in hydrocolloids leading to gelation?
In what state are hydrocolloids inserted in the mouth to record details?
In what state are hydrocolloids inserted in the mouth to record details?
What is the role of Sodium triphosphate in alginate?
What is the role of Sodium triphosphate in alginate?
Which type of alginate has a shorter working time?
Which type of alginate has a shorter working time?
In the setting reaction of alginate, what is formed when Calcium sulfate reacts with Sodium triphosphate?
In the setting reaction of alginate, what is formed when Calcium sulfate reacts with Sodium triphosphate?
Which compound is involved in forming the set gel during the setting reaction of alginate?
Which compound is involved in forming the set gel during the setting reaction of alginate?
What equipment is NOT typically used during the manipulation of alginate?
What equipment is NOT typically used during the manipulation of alginate?
Which additive is commonly used in alginate for disinfection purposes?
Which additive is commonly used in alginate for disinfection purposes?
What is the clinical importance of removing the impression from the mouth with a snap removal?
What is the clinical importance of removing the impression from the mouth with a snap removal?
Why should the impression be removed suddenly from the mouth?
Why should the impression be removed suddenly from the mouth?
What is the primary difference between irreversible and reversible hydrocolloids in terms of gelation?
What is the primary difference between irreversible and reversible hydrocolloids in terms of gelation?
How does the water content of impressions affect gypsum materials?
How does the water content of impressions affect gypsum materials?
What are the advantages of alginate impression material?
What are the advantages of alginate impression material?
What is the mode of setting for alginate impression material inside the patient's mouth?
What is the mode of setting for alginate impression material inside the patient's mouth?
Which component serves as the main reaction ingredient in Na alginate or K alginate to form gel in irreversible hydrocolloids?
Which component serves as the main reaction ingredient in Na alginate or K alginate to form gel in irreversible hydrocolloids?
Why are irreversible hydrocolloids not suitable for crown and bridge, inlays, or onlays?
Why are irreversible hydrocolloids not suitable for crown and bridge, inlays, or onlays?
What is the primary reason for preferring individual sealed packets over bulk containers for irreversible hydrocolloids like Alginate impression materials?
What is the primary reason for preferring individual sealed packets over bulk containers for irreversible hydrocolloids like Alginate impression materials?
What role does CaSO4.2H2O play in the gelation process of irreversible hydrocolloids?
What role does CaSO4.2H2O play in the gelation process of irreversible hydrocolloids?
What are the disadvantages of alginate impression material?
What are the disadvantages of alginate impression material?
Why is tempering done in the manipulation of agar impression material?
Why is tempering done in the manipulation of agar impression material?
What is the purpose of adding potassium sulfate to gypsum cast material?
What is the purpose of adding potassium sulfate to gypsum cast material?
At what temperature does the 'sol' state of agar impression material change to 'gel'?
At what temperature does the 'sol' state of agar impression material change to 'gel'?
What is the function of a conditioning unit in the manipulation of agar impression material?
What is the function of a conditioning unit in the manipulation of agar impression material?
What is the primary function of Na alginate or K alginate in irreversible hydrocolloids?
What is the primary function of Na alginate or K alginate in irreversible hydrocolloids?
What happens to the 'gel' state of agar impression material when heated?
What happens to the 'gel' state of agar impression material when heated?
What transformation does agar impression material undergo when cooling from 'sol' state?
What transformation does agar impression material undergo when cooling from 'sol' state?
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