Which is the hardest substance in the human body? A. Tooth enamel (Answer) B. Skull C. Knee cap D. Rib

Which is the hardest substance in the human body?

A. Tooth enamel (Answer)

B. Skull

C. Knee cap

D. Rib
by

1 Answer

Answer :

A. Tooth enamel (Answer)
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Related questions

Tooth enamel is the hardest substance found in the human body. What is it made up of - (1) Calcium carbonate (2) Limestone (3) Calcium phosphate (4) Calcium fluoride

Description : Tooth enamel is the hardest substance found in the human body. What is it made up of - (1) Calcium carbonate (2) Limestone (3) Calcium phosphate (4) Calcium fluoride

Last Answer : (3) Calcium phosphate Explanation: The protective layer around your teeth, called enamel, is the strongest substance that our body produces. In fact, tooth enamel is stronger than any other substance on earth except for diamonds.

Which of the following is the hardest substance in the human body? (1) Bone (2) Enamel (3) Dentine (4) Nail

Description : Which of the following is the hardest substance in the human body? (1) Bone (2) Enamel (3) Dentine (4) Nail

Last Answer : (2) Enamel Explanation: Tooth enamel, along with dentin, cementum, and dental pulp is one of the four major tissues that make up the tooth in vertebrates. It is the hardest and most highly mineralized substance in the human body. It has approximately 95% calcium concentration.

Which of the following is the hardest substance in the human body ? (1) Bone (2) Enamel (3) Dentine (4) Nail

Description : Which of the following is the hardest substance in the human body ? (1) Bone (2) Enamel (3) Dentine (4) Nail

Last Answer : Enamel

Hardest part of tooth is (a) Dentine (b) Enamel (c) Pulp (d) None

Description : Hardest part of tooth is (a) Dentine (b) Enamel (c) Pulp (d) None

Last Answer : (b) Enamel

Assertion : Patella bone of knee is a sesamoid bone Reason : Skull bones and clavical bones are membranous bones

Description : Assertion : Patella bone of knee is a sesamoid bone Reason : Skull bones and clavical bones are membranous bones

Last Answer : Assertion : Patella bone of knee is a sesamoid bone Reason : Skull bones and clavical bones are ... D. If both Assertion & Reason are false.

The characteristic and an example of a synovial joint in humans is Characteristics Examples (a) Fluid filled synovial Joint between cavity between atlas and axis two bones (b) Lymph filled between Gliding joint two bones, limited between carpals movement (c) Fluid cartilage Knee joint between two bones, limited movements (d) Fluid filled between Skull bones two joints, provides cushion

Description : The characteristic and an example of a synovial joint in humans is Characteristics Examples (a) Fluid filled synovial Joint between cavity between atlas and axis two bones (b) Lymph filled ... between two bones, limited movements (d) Fluid filled between Skull bones two joints, provides cushion

Last Answer : (a) Fluid filled synovial Joint between cavity between atlas and axis two bones

Which is the hardest substance in the human body?

Description : Which is the hardest substance in the human body?

Last Answer : Tooth enamel

Can knee brace substitute use of plastering if there is injury to knee cap?

Description : Can knee brace substitute use of plastering if there is injury to knee cap?

Last Answer : A knee brace can be used as substitute for plastering for injuries to the knee cap. If the knee cap is not broken, a knee brace can allow for more flexibility.

The nature of calcium phosphate present in tooth enamel is (a)Basic (b)Acidic (c ) Neutral (d) Amphoteric

Description : The nature of calcium phosphate present in tooth enamel is (a)Basic (b)Acidic (c ) Neutral (d) Amphoteric

Last Answer : (a)Basic

Tooth enamel is made up of: a) Potassium b) Calcium carbonate c) Calcium phosphate d) Calcium oxide

Description : Tooth enamel is made up of: a) Potassium b) Calcium carbonate c) Calcium phosphate d) Calcium oxide

Last Answer : c) Calcium phosphate

Was my father right in saying electric toothbrushes remove tooth enamel?

Description : Was my father right in saying electric toothbrushes remove tooth enamel?

Last Answer : No more so, I’m guessing, than extremely aggressive brushing with a regular toothpaste. My dentist recommends soft toothbrushes but okays my using my electtric if I use a soft tip—which I do. Also, my electric has a built-in timer.

What does enamel cover? (1) Crown of the tooth (2) Dentin on all sides (3) Cementum (4) Cementum and partly dentin

Description : What does enamel cover? (1) Crown of the tooth (2) Dentin on all sides (3) Cementum (4) Cementum and partly dentin

Last Answer : (1) Crown of the tooth Explanation: The basic unit of enamel is called an enamel rod which is a tightly packed mass of hydroxyapatite crystals in an organized pattern. In cross section, it is best compared ... the crown of the tooth, and the bottom, or tail, oriented toward the root of the tooth.

The layer of cells that secrete enamel of tooth is (a) osteoblast (b) odontoblast (c) dentoblast (d) ameloblast.

Description : The layer of cells that secrete enamel of tooth is (a) osteoblast (b) odontoblast (c) dentoblast (d) ameloblast.

Last Answer : (b) odontoblast

In preparing a very small proximal amalgam cavity on a molar tooth what would consider, A. Extend the cavity to the gingival margin B. Extend the cavity beyond the contacts areas C. Achieve at least 2mm in dentine D. Extend cavity just beyond dento enamel junction

Description : In preparing a very small proximal amalgam cavity on a molar tooth what would consider, A. Extend the cavity to the gingival margin B. Extend the cavity beyond the contacts areas C. Achieve at least 2mm in dentine D. Extend cavity just beyond dento enamel junction

Last Answer : D. Extend cavity just beyond dento enamel junction

The surface of enamel rod prisms in permanent teeth is: A. Perpendicular to the outer surface of the tooth B. Parallel to the outer surface of the tooth C. Parallel to enamel contour D. Parallel to enamel-dentine contour

Description : The surface of enamel rod prisms in permanent teeth is: A. Perpendicular to the outer surface of the tooth B. Parallel to the outer surface of the tooth C. Parallel to enamel contour D. Parallel to enamel-dentine contour

Last Answer : A. Perpendicular to the outer surface of the tooth

The effectiveness of the acid etch is dependent on which of the following factors: A. Material must be used to clean the surface of the tooth prior to etching B. The effectiveness of the itchant C. The chemical and physical nature of the tooth D. The area and surface of the enamel to be itched

Description : The effectiveness of the acid etch is dependent on which of the following factors: A. Material must be used to clean the surface of the tooth prior to etching B. The effectiveness of the itchant C. The chemical and physical nature of the tooth D. The area and surface of the enamel to be itched

Last Answer : C. The chemical and physical nature of the tooth

Odontogenic cysts develop from the following structures except: A. Reduced enamel epithelium of tooth crown B. Dental lamina dura C. Epithelium trapped after sutures D. ertwig’s root sheath

Description : Odontogenic cysts develop from the following structures except: A. Reduced enamel epithelium of tooth crown B. Dental lamina dura C. Epithelium trapped after sutures D. ertwig’s root sheath

Last Answer : C. Epithelium trapped after sutures

When you try to seat a crown on a tooth you find a discrepancy of 0.3mm at the margin; you will: A. Reduce inner surface of crown B. Remake a new crown C. Smooth the enamel at the margin D. Hand burnish crown margins

Description : When you try to seat a crown on a tooth you find a discrepancy of 0.3mm at the margin; you will: A. Reduce inner surface of crown B. Remake a new crown C. Smooth the enamel at the margin D. Hand burnish crown margins

Last Answer : B. Remake a new crown

Calculus attaches to teeth surfaces by: A. Acquired pellicle B. Interlocking to the crystals of the tooth C. Penetrated into enamel and dentine D. Mechanical interlocking E. All of the above

Description : Calculus attaches to teeth surfaces by: A. Acquired pellicle B. Interlocking to the crystals of the tooth C. Penetrated into enamel and dentine D. Mechanical interlocking E. All of the above

Last Answer : E. All of the above

A crown casting with a chamfer margin fits the die; but in the mouth the casting is open approximately 0.3mm. A satisfactory fit and accurate physiological close of the gingival area of the crown can BEST be achieved by: A. Hand burnishing B. Mechanical burnishing C. Using finishing burs and points to remove the enamel margins on the tooth D. Making a new impression and remaking the crown E. Relieving the inside of the occlusal surface of the casting to allow for further

Description : A crown casting with a chamfer margin fits the die; but in the mouth the casting is open approximately 0.3mm. A satisfactory fit and accurate physiological close of the gingival area of the crown ... the crown E. Relieving the inside of the occlusal surface of the casting to allow for further

Last Answer : D. Making a new impression and remaking the crown

The minimal labial tooth reduction for satisfactory aesthetics with porcelain fused to metal crown is, A. 1mm B. The full thickness of enamel C. 1.5 mm D. 2.5mm E. One third of the dentine thickness

Description : The minimal labial tooth reduction for satisfactory aesthetics with porcelain fused to metal crown is, A. 1mm B. The full thickness of enamel C. 1.5 mm D. 2.5mm E. One third of the dentine thickness

Last Answer : C. 1.5 mm

When the enamel of the tooth is exposed to preparation containing high concentrations of fluoride the major reaction is: M07 A. Sodium fluoride B. Calcium fluoride C. Stannous fluoride D. Fluoroapatite

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Of all the factors that increase the resistance of teeth to dental caries, THE MOST EFFECTIVE is,** A. The general nutrition of a child during the period of tooth formation B. The intake of fluoride during the period of enamel mineralization and maturation C. Periodic topical fluoride application by dental health care following tooth eruption D. Sufficient intake of calcium and Vitamin D during the period of enamel mineralization and maturation

Description : Of all the factors that increase the resistance of teeth to dental caries, THE MOST EFFECTIVE is,** A. The general nutrition of a child during the period of tooth formation B. The ... eruption D. Sufficient intake of calcium and Vitamin D during the period of enamel mineralization and maturation

Last Answer : B. The intake of fluoride during the period of enamel mineralization and maturation

Which of the following anomalies occurs during the initiation and proliferation stages of tooth development A. Amelogenesis imperfecta (developmental defect) B. Dentinogenesis imperfecta (developmental defect) C. Enamel hypoplasia (AI type) D. Oligodontia E. Ankylosis

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Last Answer : D. Oligodontia

Nutrition to the tooth is supplied through (a) Alveolus (b) Pulp cavity (c) Enamel (d) Ail

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Last Answer : (b) Pulp cavity

Main part of tooth is (a) Enamel (b) Dentine (c) Pulp (d) None

Description : Main part of tooth is (a) Enamel (b) Dentine (c) Pulp (d) None

Last Answer : (b) Dentine

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Description : The hardest constituent of tooth is

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I just lost a cap! Well pretty much the whole tooth! How serious is this?

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Last Answer : I would think if there’s no pain, there’s no problem. After all, it’s already dead. I had to have a tooth pulled that had been capped. The dentist said the tooth itself was mush and almost rinsed away.

In regard to the enamel surface: A. It is a perfect substance for bonding B. It does not conform to the bonding requirements C. It is the most inorganic, rough part D. It is free from contamination and roughness E. None of the above

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Last Answer : B. It does not conform to the bonding requirements

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Last Answer : thigh

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