Ivory of teeth is (a) Enamel (b) Dentine (c) Both (d) None

Ivory of teeth is
(a) Enamel (b) Dentine
(c) Both (d) None
by

1 Answer

Answer :

(b) Dentine
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Related questions

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

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

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

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

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

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

Last Answer : (b) Pulp cavity

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.

for dental caries to progress in dentine, A. the dentine must contain soluble collagen B. enamel must contain glycoproteins C. diet must contain simple carbohydrate D. diet must contain polysaccharides E. pulp must contain complement

Description : for dental caries to progress in dentine, A. the dentine must contain soluble collagen B. enamel must contain glycoproteins C. diet must contain simple carbohydrate D. diet must contain polysaccharides E. pulp must contain complement

Last Answer : C. diet must contain simple carbohydrate

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

While you finish a class I cavity, the enamel is sound but you notice a brown line in the dentine and on the Dento-enamel junction, what is your response, A. You leave it and complete the final restoration B. You extend your preparation and clean it C. You apply a cover of varnish

Description : While you finish a class I cavity, the enamel is sound but you notice a brown line in the dentine and on the Dento-enamel junction, what is your response, A. You leave it and complete the final restoration B. You extend your preparation and clean it C. You apply a cover of varnish

Last Answer : B. You extend your preparation and clean it

Two conditions of enamel facilitate the post eruptive uptake of fluoride: A. Hyper mineralisation and surface dentine B. Surface demineralisation and hypo mineralisation C. Dental fluorosis and enamel opacities

Description : Two conditions of enamel facilitate the post eruptive uptake of fluoride: A. Hyper mineralisation and surface dentine B. Surface demineralisation and hypo mineralisation C. Dental fluorosis and enamel opacities

Last Answer : B. Surface demineralisation and hypo mineralisation

Acid conditioning of enamel and eroded dentine: A. Provides an none traumatic, conservative clinical approach to the bonding of restorative material B. Is a traumatic approach to bonding materials C. Is not a safe and simple method of bonding D. Bonding fails to produce a highly significant retention and good marginal integrity and clinical durability E. None of the above

Description : Acid conditioning of enamel and eroded dentine: A. Provides an none traumatic, conservative clinical approach to the bonding of restorative material B. Is a traumatic approach to bonding ... highly significant retention and good marginal integrity and clinical durability E. None of the above

Last Answer : A. Provides an none traumatic, conservative clinical approach to the bonding of restorative material

Which of the following is a radiographic feature of dentino-genesis imperfecta: A. Small pulp chambers and root canals, normal enamel B. Enamel is missing but dentine formation is normal C. Enamel and dentine show disturbances D. Pulp is normal but dentine is abnormal

Description : Which of the following is a radiographic feature of dentino-genesis imperfecta: A. Small pulp chambers and root canals, normal enamel B. Enamel is missing but dentine formation is normal C. Enamel and dentine show disturbances D. Pulp is normal but dentine is abnormal

Last Answer : A. Small pulp chambers and root canals, normal enamel

Which is the only dental tissue that loses its formative cells as it matures: A. Enamel B. Dentine C. Pulp D. Cementum

Description : Which is the only dental tissue that loses its formative cells as it matures: A. Enamel B. Dentine C. Pulp D. Cementum

Last Answer : A. Enamel

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

Using fluoride in the root surface caries is to protect, A. Enamel B. Dentine and cementum C. Cuticle

Description : Using fluoride in the root surface caries is to protect, A. Enamel B. Dentine and cementum C. Cuticle

Last Answer : B. Dentine and cementum

For dental caries to progress in dentine, A. The dentine must contain soluble collagen B. Enamel must contain glycoproteins C. Diet must contain simple carbohydrate D. Diet must contain polysaccharides E. Pulp must contain complement

Description : For dental caries to progress in dentine, A. The dentine must contain soluble collagen B. Enamel must contain glycoproteins C. Diet must contain simple carbohydrate D. Diet must contain polysaccharides E. Pulp must contain complement

Last Answer : C. Diet must contain simple carbohydrate

For lower premolars, the purpose of inclining the handpiece lingually is to, A. Avoid buccal pulp horn B. Avoid lingual pulp horn C. Remove unsupported enamel D. Conserve lingual dentine

Description : For lower premolars, the purpose of inclining the handpiece lingually is to, A. Avoid buccal pulp horn B. Avoid lingual pulp horn C. Remove unsupported enamel D. Conserve lingual dentine

Last Answer : A. Avoid buccal pulp horn

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

Teeth are absent since birth in (a) Whale (b) Sloth (c) Both (d) None

Description : Teeth are absent since birth in (a) Whale (b) Sloth (c) Both (d) None

Last Answer : (c) Both

Teeth in frog are (a) Acrodont (b) Homodont (c) Both (d) None

Description : Teeth in frog are (a) Acrodont (b) Homodont (c) Both (d) None

Last Answer : (c) Both

Vitamin for the formation of collagen fibres, teeth, bone, R.B.C. is (a) Vit. K (b) Vit. D (c) Vit. A (d) Vit. C

Description : Vitamin for the formation of collagen fibres, teeth, bone, R.B.C. is (a) Vit. K (b) Vit. D (c) Vit. A (d) Vit. C

Last Answer : (d) Vit. C

Typical no of mammalian teeth is (a) 48 (b) 42 (c) 44 (c) 30

Description : Typical no of mammalian teeth is (a) 48 (b) 42 (c) 44 (c) 30

Last Answer : (c) 44

Wisdom teeth in man are (a) Four (b) Two (c) Eight (d) None

Description : Wisdom teeth in man are (a) Four (b) Two (c) Eight (d) None

Last Answer : (a) Four

Permanent teeth in man are (a) Incisors (b) Premolars (c) Molars (d) Canines

Description : Permanent teeth in man are (a) Incisors (b) Premolars (c) Molars (d) Canines

Last Answer : (b) Premolars

In total, number of permanent teeth in man are (a) 20 (b) 12 (c) 06 (d) None

Description : In total, number of permanent teeth in man are (a) 20 (b) 12 (c) 06 (d) None

Last Answer : (b) 12

In man 3rd molars (wisdom teeth) are (a) Temporary (b) Permanent (c) Polyphyodont (d) None

Description : In man 3rd molars (wisdom teeth) are (a) Temporary (b) Permanent (c) Polyphyodont (d) None

Last Answer : (b) Permanent

Grinding teeth are (a) Incisors (b) Molars (c) Canines (d) None

Description : Grinding teeth are (a) Incisors (b) Molars (c) Canines (d) None

Last Answer : (b) Molars

Fangs are the (a) Poisonous teeth of snakes (b) Furnes soap (c) Bone pieces of limb (d) None

Description : Fangs are the (a) Poisonous teeth of snakes (b) Furnes soap (c) Bone pieces of limb (d) None

Last Answer : (a) Poisonous teeth of snakes

Vestibule is a space (a) Between lips & gums (b) Between tongue & teeth (c) Between incisor & canine (d) None

Description : Vestibule is a space (a) Between lips & gums (b) Between tongue & teeth (c) Between incisor & canine (d) None

Last Answer : (a) Between lips & gums

Herbivore animals have (a) More teeth as compare to carnivore (b) Flatter teeth than carnivore (c) Fewer teeth than carnivore (d) Sharp teeth than carnivore

Description : Herbivore animals have (a) More teeth as compare to carnivore (b) Flatter teeth than carnivore (c) Fewer teeth than carnivore (d) Sharp teeth than carnivore

Last Answer : (b) Flatter teeth than carnivore

Study of teeth is (a) Dentology (b) Teethology (c) OdontologY (d) Enamelogy

Description : Study of teeth is (a) Dentology (b) Teethology (c) OdontologY (d) Enamelogy

Last Answer : (c) OdontologY

Diastema is associated with (a) Presence of certain teeth (b) Organ of corti (c) Retinal cells (d) Absence of certain teeth

Description : Diastema is associated with (a) Presence of certain teeth (b) Organ of corti (c) Retinal cells (d) Absence of certain teeth

Last Answer : (d) Absence of certain teeth

Fluorine is-an important trace element for the growth of : (a) Hair (b) Teeth (c) Mucsles (d) Bones

Description : Fluorine is-an important trace element for the growth of : (a) Hair (b) Teeth (c) Mucsles (d) Bones

Last Answer : (b) Teeth

Tearing teeth are (a) Incisors (b) Premolars (c)Molars (d) Canines

Description : Tearing teeth are (a) Incisors (b) Premolars (c)Molars (d) Canines

Last Answer : (d) Canines

Two central incisors on a radiograph are showing with what looks like eye drop radiolucency. You decided to start endodontic treatment on these teeth but when you tried to open access to the root canal you find clearly closed orifices with what look like secondary dentine. What is your initial management? A. Leave as it and start a permanent restoration. B. Start systemic antibiotic C. Try to ream and file canals

Description : Two central incisors on a radiograph are showing with what looks like eye drop radiolucency. You decided to start endodontic treatment on these teeth but when you tried to open access to the root ... and start a permanent restoration. B. Start systemic antibiotic C. Try to ream and file canals

Last Answer : C. Try to ream and file canals

The gingival portion of natural teeth differs in colour from the incisal portion because the : A. Lighting angle is different B. Gingival and incisal portions have different fluorescent qualities C. Gingival area has a dentine background D. Incident light is different

Description : The gingival portion of natural teeth differs in colour from the incisal portion because the : A. Lighting angle is different B. Gingival and incisal portions have different fluorescent qualities C. Gingival area has a dentine background D. Incident light is different

Last Answer : C. Gingival area has a dentine background

Can I damage the enamel by scrubbing my teeth?

Description : Will the enamel be damaged by brushing your teeth thoroughly? I have a normal toothbrush and toothpaste, but I clean them a little more intensely.

Last Answer : Brush when cleaning for a few minutes. # (# shake)

Enamel of teeth is secreted by `:-`

Description : Enamel of teeth is secreted by `:-`

Last Answer : Enamel of teeth is secreted by `:-` A. Ameloblast B. Odontoblast C. Osteoblast D. Osteoclast

Why don't we feel the decay of the enamel in our teeth?

Description : Why don't we feel the decay of the enamel in our teeth?

Last Answer : There are no nerves and it's not a living thing so we can't feelit happening right away but we will feel it after its done decayingand done making its hole in the tooth.

Will eating frozen Snickers harm teeth enamel?

Description : Will eating frozen Snickers harm teeth enamel?

Last Answer : No, snicker bars are soft enough (even when frozen) to not hard your teeth. But keep brushing them :)

Which element helps to strengthen the enamel in teeth?

Description : Which element helps to strengthen the enamel in teeth?

Last Answer : Fluorine

During teeth eruption, the reduced enamel epithelium merges with the oral epithelium. What is the further development? A. Downgrowth of oral epithelium which replaces the reduced enamel epithelium B. Proliferation of inner enamel epithelium C. Proliferation of outer enamel epithelium D. Down growth of oral epithelium which undermines the reduced enamel epithelium E. Gradual transformation of the reduced enamel epithelium

Description : During teeth eruption, the reduced enamel epithelium merges with the oral epithelium. What is the further development? A. Downgrowth of oral epithelium which replaces the reduced enamel ... which undermines the reduced enamel epithelium E. Gradual transformation of the reduced enamel epithelium

Last Answer : E. Gradual transformation of the reduced enamel epithelium

The difference between deciduous and permanent teeth is: A. Deciduous teeth have a higher pulp horns and larger pulp chambers B. Deciduous teeth have flatter contact areas C. Deciduous teeth have thinner enamel surface D. All of the above

Description : The difference between deciduous and permanent teeth is: A. Deciduous teeth have a higher pulp horns and larger pulp chambers B. Deciduous teeth have flatter contact areas C. Deciduous teeth have thinner enamel surface D. All of the above

Last Answer : D. All of the above

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

Vomiting is result of (a) Peristalsis (b) Anti peristalsis (c) Both (d) None

Description : Vomiting is result of (a) Peristalsis (b) Anti peristalsis (c) Both (d) None

Last Answer : (b) Anti peristalsis

β-cells of pancreas Produce (a) Insulin (b) Glucagon (c) Both (d) None

Description : β-cells of pancreas Produce (a) Insulin (b) Glucagon (c) Both (d) None

Last Answer : (a) Insulin

Jaundice is (a) Viral (b) Bacterial (c) Both (d) None

Description : Jaundice is (a) Viral (b) Bacterial (c) Both (d) None

Last Answer : (c) Both

Liver is characterised by presence of (a) Glisson's capsule (b) Kupffer’s cells (c) Both (d) None

Description : Liver is characterised by presence of (a) Glisson's capsule (b) Kupffer’s cells (c) Both (d) None

Last Answer : (c) Both