Self polymerising acrylic resins differ from heat cured resins because they exhibit: A. Higher molecules weight B. Higher content of residual monomers

Self polymerising acrylic resins differ from heat cured resins because they exhibit:
A. Higher molecules weight
B. Higher content of residual monomers
by

1 Answer

Answer :

B. Higher content of residual monomers
by

Related questions

The effect of the temperature rising above 100ºC on heat-cured denture-base acrylic resins is: A. Produces porosity on the external portion of the resin. B. Produces porosity on the internal portion of the resin. C. Produces porosity on the surface of the resin. D. Prevents porosity on the interior of the resin

Description : The effect of the temperature rising above 100ºC on heat-cured denture-base acrylic resins is: A. Produces porosity on the external portion of the resin. B. Produces porosity on the internal portion ... porosity on the surface of the resin. D. Prevents porosity on the interior of the resin

Last Answer : B. Produces porosity on the internal portion of the resin.

A major difference between light cured and chemical cured composite is that during setting or in function the light cured material tends to:******** VERY IMP A. Seal the margins better and completely B. Exhibit less wear on time C. Undergo greater colour change D. Shrink more rapidly E. Posses greater fracture toughness

Description : A major difference between light cured and chemical cured composite is that during setting or in function the light cured material tends to:******** VERY IMP A. Seal the margins better and ... on time C. Undergo greater colour change D. Shrink more rapidly E. Posses greater fracture toughness

Last Answer : D. Shrink more rapidly

What is an important requisite for fillers in dental composite restorative resins in load bearing areas: A. Sub micro sized particles B. High coefficient of thermal expansion C. High in content (High filler)

Description : What is an important requisite for fillers in dental composite restorative resins in load bearing areas: A. Sub micro sized particles B. High coefficient of thermal expansion C. High in content (High filler)

Last Answer : C. High in content (High filler)

.In regard to the glass of quartz particles of filling restorative resin; the microfill resins tend to have, A. A higher coefficient of thermal expansion and a higher crashing strength B. A higher coefficient of thermal expansion and a lower crashing strength C. A lower coefficient of thermal expansion and a higher crashing strength D. A lower coefficient of thermal expansion and a lower crashing strength

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How long should acrylic self-cure special trays been made prior to taking impression: A. 12 hrs B. Immediately after fabricating it C. After been left in water for an hour D. Wait for an hour before pouring

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The un-polymerized monomer in Self-cured resin is approximately:** A. 0.5% B. 2.5% C. 5% D. 10%

Description : The un-polymerized monomer in Self-cured resin is approximately:** A. 0.5% B. 2.5% C. 5% D. 10%

Last Answer : C. 5%

In 3rd generation dentin bonding agents, HEMA (Hydroxyethylmethacrylate) is 1. a hydrophilic monomer that wets the dentinal surface 2. a hydrophilic resin that forms a ”hybrid” layer by chemically reacting the intertubular dentin. 3. a hydrophilic monomer that alters collagen to promote cross linking of collagen to dentin. 4. a bifunctional molecule resin that copolymerizes to bis-GMA resins. a. 1,2 b. 1,4 c. 2,3 d. 1,3 e. 3,4

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Tissue conditioning materials: (Silicon lining materials) A. are more resilient than plastic acrylic B. can minimise any bacterial colonies

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Which of the following is a major disadvantage to immediate complete denture therapy, A. Trauma to extraction site B. Increased potential of infection C. Impossibility for anterior try in D. Excessive resorption of residual ridge

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The clinical advantage of porcelain laminate veneers over composite resin veneers is: A. Color stability and resistance to abrasion B. Availability of self-curing or light activated placement (yes but not necessary a clinical advantage) C. Minimal over-contouring of the treated teeth ( not necessarily true depends on the dentist's abilities) D. May be used in edge to edge occlusion or Class III relationships.

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Optimum penetration of a .024 or .031 inch self-threading pin in dentin is . . . a. 0.5 mm b. 1.0 mm c. 2.0 mm d. 2.5 mm e. 3.0 mm

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In calculus formation, the epitaxic concept is one of the theories. Which of the following is true: a. Mineralisation occurs when calcium and phosphate content is high. b. The presence of matrix would start initial formation of nucleus. c. The amorphous materials would convert to calcium phosphate and hydroxy phosphate.

Description : In calculus formation, the epitaxic concept is one of the theories. Which of the following is true: a. Mineralisation occurs when calcium and phosphate content is high. b. The presence of ... of nucleus. c. The amorphous materials would convert to calcium phosphate and hydroxy phosphate.

Last Answer : b. The presence of matrix would start initial formation of nucleus.

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Description : High content copper amalgam . . . a. generally requires greater energy to accomplish trituration b. should be placed rapidly in large increments c. Continues to leak since the ... not cause galvanism in oral environment e. is equally effective as conventional alloys in clinical studies

Last Answer : a. generally requires greater energy to accomplish trituration

In calculus formation the epitaxic concept is one of the theories. Which of the following is true: A. Mineralisation occurs when calcium and phosphate content is high B. The presence of matrix would initiate the formation of the nucleus C. The amorphous materials would convert to calcium phosphate and hydroxy

Description : In calculus formation the epitaxic concept is one of the theories. Which of the following is true: A. Mineralisation occurs when calcium and phosphate content is high B. The presence of ... the formation of the nucleus C. The amorphous materials would convert to calcium phosphate and hydroxy

Last Answer : B. The presence of matrix would initiate the formation of the nucleus

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.Fluoridation is the adjustment of the fluoride content of a community water supply to optimum levels for caries prevention. Which of the following statement is correct? A. Tooth decay declines by 90% to 95% B. Tooth decay declines by 45% to 55% C. Greater reduction in smooth surface caries from in pit and fissures D. Fluoridation increases vulnerability to osteoporosis

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Last Answer : C. Greater reduction in smooth surface caries from in pit and fissures

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When the nurse prepares to give a bolus tube feeding to the patient and determines that the residual gastric content is 150 cc, her best action is to a) reassess the residual gastric content in 1 hour. If the gastric residual exceeds 100 cc 2 hours in a row, the physician should be notified.

Description : When the nurse prepares to give a bolus tube feeding to the patient and determines that the residual gastric content is 150 cc, her best action is to a) reassess the residual gastric content in ... residual exceeds 100 cc, the tube feeding should be withheld at that time, but not indefinitely.

Last Answer : a) reassess the residual gastric content in 1 hour. If the gastric residual exceeds 100 cc 2 hours in a row, the physician should be notified.

By increasing impurity content in the metal alloy the residual resistivity always

Description : By increasing impurity content in the metal alloy the residual resistivity always

Last Answer : By increasing impurity content in the metal alloy the residual resistivity always increases.

What is the property of high copper amalgam A. Reduced physical creep B. Higher retention

Description : What is the property of high copper amalgam A. Reduced physical creep B. Higher retention

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In regard to indirect compared to direct wax technique, what characteristics must the wax have:** A. Low temperature solidifying point B. Hard in room temperature C. Higher flow in room temperature

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Last Answer : D. All of the above

Heat is transmitted from higher temperature to lower temperature through the actual motion of the molecules in – (1) Conduction (2) Convection (3) Radiation (4) Both conduction and convection

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Last Answer : (2) Convection Explanation: The process of heat transfer from one place to an-other place without the movement of particles is called conduction Example: Heat transfer through Metal rods. On the ... heated particles of the substance. The fluids (liquids and gases) are heated by this process.

Heat is transmitted from higher temperature to lower temperature through the actual motion of the molecules in - (1) Conduction (2) Convection (3) Radiation (4) Both conduction and convection

Description : Heat is transmitted from higher temperature to lower temperature through the actual motion of the molecules in - (1) Conduction (2) Convection (3) Radiation (4) Both conduction and convection

Last Answer : (2) Convection Explanation: The process of heat transfer from one place to another place without the movement of particles is called conduction,

Heat is transmitted from higher temperature to lower temperature through the actual motion of the molecules in (1) Conduction (2) Convection (3) Radiation (4) Both conduction and convection

Description : Heat is transmitted from higher temperature to lower temperature through the actual motion of the molecules in (1) Conduction (2) Convection (3) Radiation (4) Both conduction and convection

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What happens to monomers when they undergobdehydration synthesis?

Description : What happens to monomers when they undergobdehydration synthesis?

Last Answer : What is the answer ?