MCQ 2DD Dental Histology
Dental Histology Mastery Quiz
Test your knowledge of dental histology with this comprehensive quiz! Covering essential topics from enamel structure to the fun
Challenge yourself with questions that include:
- The composition and fun
ction of enamel - Understanding dentin and its components
- Identifying major cells of the dental pulp
Enamel covers :
The root of tooth
The crown of the tooth
Dentin
Cement
Primary dentin
Enamel prism in transversal section has a shape of :
Cuboid
Arched
Poligonal
Formed
Oval
Enamel prism is composed from :
Head
Ligament
Root
Neck
Handle
Basic elements of the enamel are :
Fluor
Magnesium
Calcium , Phosphorus
Natrium
Structural element characteristic to the dentinal canaliculi is:
The presence of myeline nervous fibers
Growth Ebners’ lines
Uniform calibre
Presence of Sharpeys’ fibers
Periferic narrowing of calibre
Secondary dentin is deposited preferential on :
Vestibular wall of pulp cavity of frontal teeth
Pulp cavity floor of premolars
Pulp cavity chamber of premolars
Pulp cavity floor of molars
Pulp cavity chamber of molars
Dentin is composed from :
Basic substance
Dentinal tubules
Sharpeys’ fibers
Odontoblasts
Collagen fascicles
The base of inorganic matter is :
Calcium phosphate – Ca (PO4)
Calcium carbonate – Ca CO3
Calcium fluoride – Ca FO3
Vanadium – V
Molybdenum – Mo
The organic substance of dentine is composed from :
Proteins, Glucides,Aminoacids,Polysaccharid
Fatty oils
Collagen
Fibroblast
Calcium
What is the content of a dentinal tubules :
Nerves
Blood vessels
Lymphatic vessels
Tomes’ fibers
All of the above
Dentinal tubules are distributed ununiformly in different layers of dentine :
More near the pulp
More near the enamel
Less near the pulp
Near the enamel
Do not vary
In radicular cement is distinguished :
Cementoblasts, Sharpeys’ fibers, Cementoblasts
Interglobular spaces Czermak
Granular layer Tomes
Fiber
Collagen
The fibers from radicular cement have one direction and are joined :
Tangential
Radial With Tomes’ fibers
With Sharpeys’ fibers
With both
All of the above
Odontoblast’s shape can be :
Cillindrical
Fusiform
Flat
Star – form
All of the above
The function of dental pulp :
Nourishing ( nutritive ), Protective, Inductive, Defensive, Formative
Protective
Inductive
Defensive
Formative
Specify functions of basic substance of dental pulp :
Homeostatic
Hemostatic
Water receiver
Ions receiver
The transmission of nervous excitation
Indicate the pulpal fibers of collagen :
Reticuline fibers
Ebners’ fibers
Tomes’ fibers
Elastic fibers
All of the above
Characteristic cells for health pulp are :
Odontoblasts, Ameloblasts, Lymphocytes
Cementoblasts
Histiocytes
Cartilage
All of the above
Dental pulp is a lax conjunctive tissue formed from :
Basic substance Cells, Fibrous elements, Blood vessels, Nerves
Cells
Fibrous elements
Blood vessels
Nerves
Odontoblasts are cells with structure :
Polar ( arctic ), Have body, Have processes
Have only one process
Do not have processes
Body
All of the above
The peripheric processes of odontoblasts are situated in :
Predentin, Dentin, Dentinal tubules
Central layer
Subodontoblastic layer
Cementum
Pulp
The most numerous cells of the pulp are :
Odontoblasts
Fibroblasts
Histiocytes
Plasmatic cells
Monocytes
The main function of fibroblasts of the pulp is to form :
Predentin
Dentin
Basic substance, Collagen fibers
Anatomic apex
All of the above
The structure and functions of periodontium
Periodontium is situated in :
Alveole
Periodontal space
Between compact lamellae of alveolus and radicular cement
Between radicular cement and cancellous bone
Between cement and dentin
Periodontium contacts directly with :
Maxillary’s bone
Dental pulp
Gingiva
Gingival sulcus
The thickness of periodontium is equal with :
0,50 mm
0,30 mm
0,20 mm
0,35 mm
Periodontium is formed from :
Conjunctive tissue
Osseous tissue
Cement tissue
Epithelial tissue
Adipose tissue
The functions of periodontium are :
Supporting, Plastic, Transmission of pressure, Trophic, Sensory and protective
Plastic
Transmission of pressure
Trophic
Sensory and protective
Blood supply is derived from sources :
Interalveolar branches, Dental branches, Gingival branches
Anastomosing vessels
Only from interalveolar branches
All of above
Periodontium innervation is derived from :
Gingival fibers, Interalveolar fibers, Periodontal fibers
Dental fibers
Pulpal fibers
All of above
Plastic function of periodontium is due to :
Plasmocytes
Cementoblasts
Fibroblasts
Osteoblasts
Histiocytes
Terms of root formation for temporary incisors are :
11 months
1 year
2 years
2,5 years
3 years
Terms of buds formation for temporary canines :
67 weeks
78 weeks
89 weeks
910 weeks
1011 weeks
Specify terms of dental germs mineralization for canines :
σ½ 4,5 months
σ½ 5,5 months
σ½ 6 months
σ½ 7 months
σ½ 7,5 months
Specify terms of eruption for first temporary molars :
68 months
1620 months
812 months
1216 months
2030 months
Terms of root formation for first temporary molars are :
σ½ 2 years
σ½ 3 years
σ½ 5 years
σ½ 4 years
σ½ 6 years
Specify terms of germs mineralization for second temporary molar :
6 months
6,5 months
7 months
7,5 months
8 months
Teeth development begin in the :
σ½ 3rd intrauterine weeks
σ½ 4th – 5th weeks
σ½ 5th – 6th weeks
σ¾ 6th – 7th weeks
σ½ 7th – 8th weeks
How many phases exist in the development of tooth tissues are :
2
3
4
5
6
Sinking of epithelium into mesenchime
Oral epithelium forms in mesenchime a growth in shape of :
Horseshoe
Line
Cup
Bell
Triangle
Epithelial thickness or epithelial plate is devided between
Bucolabial plate ,Dental plate
Epithelial plate
Dentinal plate
Adamantin plate
Buco – labial plate contributes to formation of :
Dental buds
Vestibulum oris
Enamel
Dentin
Dental pulp
Select the components of enamel organ :
External epithelial layer, Internal epithelial layer, Reticulum stellatum, Intermediary layer
Internal epithelial layer
Reticulum stellatum
Intermediary layer
From enamel organ is developed :
Dental alveolus
Dentin
Pulp
Enamel
Cement
From mesenchimal papilla is developed :
Dental alveolus
Dentin, Pulp
Enamel
Cement
From dental sac (follicle) of dental germs is developed :
Enamel
Radicular cement, Dental alveolus, Periodontium
Dental pulp
All of above
Dental sac is composed from the following layers :
Internal layers, Intermedia layer, External layer
Intermedia layer
External layer
Superior layer
Inferior layer
Normally the mandible has a shape of :
Ellipse
Trapezium
€œ U “ shape
€œ W “ shape
Parabolic
Normally the maxilla has a shape of :
Ellipse
Trapezium
€œ U “ shape
€œ W “ shape
Parabolic
Health teeth react to currents of about :
12 mA
26 mA
712 mA
1525 mA
2540 mA
Calcium content of saliva is low in:
Sublingual salivary gland secretions
Submandibular salivary gland secretions
Accessory salivary gland secretions
Parotid secretions
In submandibular salivary gland surgery, the branch of facial nerve at risk is:
Upper zygomatic nerve
Lower zygomatic nerve
Marginal mandibular nerve
Buccal nerve
In parotid surgeries the most reliable way of identifying the facial nerve is:
Searching at the tympanomastoid sulcus
By using the tragal pointer
By removing the styloid process
By tracing it from the mastoid cavity
Adenoid cystic carcinoma is known to commonly involve:
Minor salivary glands
Submandibular salivary gland
Sublingual salivary gland
Parotid gland
Parotid duct is known as:
Stenson's duct
Stylle's duct
Wharton's duct
Finely's duct
Parotid gland is a :
Mucoserous salivary gland
Serous salivary gland
Mucinous salivary gland
Protenaceous salivary gland
Oncocytoma almost exclusively occurs in:
Submandibular salivary gland
Parotid salivary gland
Sublingual salivary gland
Accessory salivary gland
Salivary fistula is commonly originates from:
Accessory salivary glands
Sublingual salivary glands
Submandibular salivary glands
Parotid glands
Carbohydrateprotein substance corresponding to the blood group antigens are not secreted
Sublingual salivary glands
Parotid glands
Accessory salivary glands
Submandibular salivary glands
In superficial parotidectomy:
The deep lobe is removed completely
Only a part of superfical lobe is removed
The superfical lobe is removed completely
The whole of superfical lobe and part of deep lobe of the gland is removed
During sleep the parotid gland is known to secrete about:
Parotid secretion ceases during sleep
100% of basal salivary secretion
75% of basal salivary secretion
50% of basal salivary secretion
Superfical parotidectomy is contraindicated in patients with sialectasis because:
There is high risk of dry mouth
There is risk of facial palsy
There is a high risk of fistula formation
There is high risk of infection
Submandibular salivary gland is separated into superficial and deep portions by:
Mylohyoid muscle
Sternomastoid muscle
Buccinator muscle
Digastric muscle
Sublingual salivary gland is situated:
Below the mylohyoid muscle
Under the palatopharyngeous muscle
Above the mylohyoid
Posterior to the mylohyoid muscle
In Bulimia parotid glands are:
Nodular
Cystic in nature
Enlarged
Shrunken in size
Perineural invasion is common in:
Mucoepidermoid carcinoma
Adenoid cystic carcinoma
Pleomorphic adenoma
Acinous cell carcinoma
Benign tumors of superfical lobe of parotid gland takes a very long time to project outwards because:
The styloid process stops the progression of tumor
Slow rate of tumor growth
Ramus of the mandible stops tumor progression
The external surface of the parotid gland is covered by tough parotid fascia
Warthin's tumor is known to develop from:
Myoepithelial cells
Lymphoid tissue within parotid gland
Acinar cells
Basal cells
Acini of parotid glands are formed by:
Serous cells
Mucinous cells
Seromucinous cells
Cloudy cells
Sialolithiasis is common in:
Sublingual salivary gland
Parotid gland
Submandibular salivary gland
Accessory salivary gland
In patients with diabetes mellitus the parotid gland is:
Cystic in nature
Fibrosed
Shrunken
Enlarged
Parotid gland swellings are very painful because:
There is no outer layer of fascia covering the parotid gland
The parotid glands suppurate easily
The parotid gland is closely related to the external auditory canal
The outer layer (parotid fascia) is inelastic and firm
Parotid gland swellings are very painful because:
There is no outer layer of fascia covering the parotid gland
The parotid glands suppurate easily
The parotid gland is closely related to the external auditory canal
The outer layer (parotid fascia) is inelastic and firm
Warthin's tumor is commonly seen in:
Sublingual salivary gland
Submandibular salivary gland
Accessory salivary gland
Parotid gland
Warthin's tumor is commonly seen in:
Sublingual salivary gland
Submandibular salivary gland
Accessory salivary gland
Parotid gland
The first salivary gland to develop is:
Parotid gland
The first salivary gland to develop is:
Parotid gland
Submandibular salivary gland
Sublingual salivary gland
Accessory salivary glands
Food stimulates secretion of:
Parotid gland
Sublingual salivary gland
Submandibular salivary gland
Accessory salivary glands
Sialadenosis commonly involves:
Submandibular gland
Accessory salivary gland
Sublingual gland
Parotid gland
Chemical stimulation maximises the secretion of:
Submandibular gland
Sublingual gland
Parotid gland
Accessory salivary gland
Daily average volume of saliva produced in a human being is:
3 4 litres
1 1.5 litres
3 5 litres
8 10 litres
Submandibular salivary gland swelling is differentiated from submandibular lymphadenitis clinically by:
Presence of transillumination in submandibular salivary gland
Movement during swallowing
Palpation from behind the patient
Bidigital palpation
Parotid calculi are diagnosed by:
Xray skull lateral view
CT scan
Plain radiograph of parotid gland
Plain radiograph occlusal view
During sleep salivary secretion is maintained by:
Submandibular and sublingual salivary glands
Sublingual gland only
Parotid gland only
Submandibular gland only
Multiple cystic lesions inside both the parotid glands in a patient should alert the clinician for a possible diagnosis of:
HIV infection
Mumps
Malignancy
Measles infection
The parotid gland is divided into superficial and deep portions by:
Facial nerve branches
Internal maxillary artery
Mandible
Cartilagenous portion of external auditory canal
Enamel covers :
The root of tooth, Dentin, Cement
The crown of the tooth, Dentin in the coronal part
Dentin
Cement
Dentin in the coronal part
The enamel is covered by cement in the region of neck in :
65 %
25 %
35 %
10 %
5 %
There is a right contact between the enamel and the cement in :
30 %
35 %
12 %
25 %
50 %
There is a space between the enamel and the cement in :
10 %
25 %
65 %
55 %
100 %
What is the basic unit of the enamel structure :
Perikymaties
Diazones
Enamel prisms or rods
Fissures
Aprismatic areas
Enamel prism in transversal section has a shape of :
Cuboid
Arched, Scale – formed
Poligonal
Scale
Oval
Enamel prism is composed from :
Head, Tail
Nail
Root
Neck
Handle
What are the basic unit of the enamel structure :
Enamel prisms
Prism’s sheath
Interprism substance
Organic matter
Hunter – Schreger bands
The composition of the innorganic matter of enamel is :
Hydroxyapatite – 75,04 %
Carbonapatite – 12,06 %
Chlorapatite – 2,39 %
Fluorapatite – 0,663 %
CaCO3
Basic elements of the enamel are :
Fluor
Magnesium
Calcium
Phosphorus
Natrium
The molar coreport of Ca / P in the apatites of enamel crystalles is :
1,20
1,70
1,67
1,80
1,50
Retzius strips ( striae ) appear in transverse section of tooth as a :
Herbal tufts
Continued bands which are parallel with the long ax of a tooth
Fusiform formations
Concentric circles arranged in regular intervals
Concentric circles arranged in irregular intrvals
Lightning segments of Hunter – Schreger bands are called :
Knotty ( nodose ) enamel
Perikymaties
Diasones
Parasones
Superposed lines
Dark zones of Hunter – Schreger bands are called :
Schreger lines
Parazones
Transverse bands
Diazones
Perikymaties
Hunter – Schreger bands appear as a result of :
Curving of prisms in shape of “ S “
Sinuos direction of prisms
Incomplete mineralization of enamel
Not uniform optical density
Alterating of cutting prisms portions in longitudinal and transverse direction
In what region of the crown , the enamel has maximum thickness :
Premolars cusps
Neck of molars
Molars cusps
Neck of incisors
Cutting margin of incisors
In the enamel can be met :
Hunter – Schreger bands
Perikymaties
Ebners’ growth lines
Owens’ growth lines
Retzius growth lines
What are the fibers specific to the parapulpal dentin :
Reticuline fibers.
Elastic fibers
Ebners’ fibers
Sharpeys’ fibers
Korffs’ fibers
Structural element characteristic to the dentinal canaliculi is :
The presence of myeline nervous fibers
Growth Ebners’ lines
Uniform calibre
Presence of Sharpeys’ fibers
Periferic narrowing of caliber
Which one is not Secondary dentin is deposited preferential on :
Vestibular wall of pulp cavity of frontal teeth
Pulp cavity floor of premolars
Pulp cavity chamber of premolars
Pulp cavity floor of molars
Pulp cavity chamber of molars
Principal mass of a tooth represents :
Cement
Enamel
Dentin
Pulp
Blood vessels
Dentin contains inorganic matter about of :
2830 %
4050 %
7072 %
7580 %
90 %
Dentin contains organic matter about of :
2830 %
3240 %
1520 %
2527 %
41 %
The base of inorganic matter is :
Calcium phosphate – Ca (PO4) 2
Calcium carbonate – Ca CO3
Calcium fluoride – Ca FO3
Molybdenum – Mo
Which one is not the organic substance of dentine is composed from :
Proteins
Glucides
Aminoacids
Polysaccharid(e)
Fatty oils
What is the content of a dentinal tubules :
Nerves
Blood vessels
Lymphatic vessels
Tomes’ fibers, Peripheric process of odontoblasts
How many layers are distinguished in the normal dentine :
Translucid layer
Mantiar layer, Parapulpal layer, Predentin
Parapulpal layer
Predentin
Tertiary dentin ( reparative )
During life happens :
The thickness of dentin is reduced
The thickness of dentin is increased
The thickness of dentin is not changed
Dentin resorbtion
Dentin regeneration
Number of tubules on 1mm2 oscillate from :
10.000
15.000
20.000
30.000, 75.000
75.000
Dentinal tubules are distributed ununiformly in different layers of dentine :
More near the pulp, Less near the enamel
More near the enamel
Less near the pulp
Less near the enamel
Do not vary
Corresponding to the content of fibrillar structure , in the dentin is distinguished the following zones :
That contains Korffs’ fibres
That contain Korffs’ and Ebners’ fibres
That contain Ebners’ fibres
Afibrillar
Cellular
Where is determined in the dentin the granular layer Thomes :
In the mantiar layer
In parapulpal dentin
In radicular dentin
In coronal dentin
In dentin in the region of the cusps
The meaning of fibrillar cement :
Primary cement
Localized in the apical third of the root
Localized in the cervical third of the root
Like compact bone
Like cancellous bone
The functions of radicular cement are :
Continuous covering of radicular surfaces
Reparative function of the defects of radicular surfaces
Directing of postoperative regeneration of marginal periodontium
As a fixing layer of the alveolodental ligaments
Oclusal functional adapting of tooth
Chemical composition of radicular cement :
68 % of inorganic matter, 32 % of inorganic matter
70 % of inorganic matter
32 % of inorganic matter
42 % of inorganic matter
28 % of inorganic matter
In radicular cement is distinguished :
Cementoblasts, Cementoblasts, Sharpeys’ fibers
Interglobular spaces Czermak
Sharpeys’ fibers
Granular layer Tomes
Cementoblasts
Acellular cement is situated in :
In the region of apex
Surrounds the root surfaces
In the region of bifurcation
In apical orifice
In the limit with enamel
Cellular cement is situated in :
Surrounds the root surfaces
Covers the root apex, Covers the bifurcation region
In the limit with enamel
Covers the bifurcation region
In the apical orifice
The fibers from radicular cement have one direction and are joined :
Tangential
Radial, With Tomes’ fibers
With Tomes’ fibers
With Sharpeys’ fibers
With both
Odontoblast’s shape can be :
Cillindrical, Shutter ( window ) shape
Fusiform
Flat
Star – form
Shutter ( window ) shape
The function of dental pulp :
Nourishing ( nutritive )
Protective
Inductive
Defensive
Formative
All of above
Specify functions of basic substance of dental pulp :
Homeostatic, A water receiver, Ions receiver
Hemostatic
Water receiver
Ions receiver
The transmission of nervous excitation
Indicate the pulpal fibers of collagen :
Reticuline fibers
Ebners’ fibers, Korffes’ fibers
Tomes’ fibers
Korffes’ fibers
Elastic fibers
Characteristic cells for health pulp are :
Odontoblasts
Ameloblasts, Lymphocytes, Odontoblasts
Cementoblasts
Histiocytes
Lymphocytes
Dental pulp is situated in :
Coronal part of the tooth
Radicular part of the tooth
In coronal and radicular part of the tooth
In tooth cavity
In the region of the neck
Dental pulp is devided in :
Cispid part
Apical part
Coronal part, Radicular part
Radicular part
Canaliculi part
Dental pulp is a lax conjunctive tissue formed from :
Basic substance
Cells
Fibrous elements
Blood vessels
Nerves
All of above
Odontoblasts are cells with structure :
Polar ( arctic ), Have processes Have body
Have body
Have processes
Have only one process
Do not have processes
The peripheric processes of odontoblasts are situated in :
Predentin, Dentinal tubules, Dentin
Dentin
Dentinal tubules
Central layer
Subodontoblastic layer
Approximately what % of enamel is calcium hydroxyapatite ___:
95-97%
50-100%
70-80%
50-70%
40-60%
Changes in enamel rod orientation as seen by polarized light on tooth sections are called _:
Hunter-Shreger bands
Hunter
Shreger
Band Hunter
Because enamel is formed in a 'layering' pattern, ground tooth sections show brownish lines called ___, also known as incremental lines.:
Striae of Retzius
Hunter
Shreger
Retzium
Lines
On the surface of the crown, these lines cause very slight depressions on newly erupted teeth called _____________________.:
Perikymata
Mata
Cellin
Crown
Tooth
Scalloped-shaped 'bumps' on the incisal edge of incisors on newly erupted teeth are called ____________________.:
Mamelons
Scslloped
Hunter
Lines
Polarized
A definitive line that indicates the birth of an infant in the enamel of a tooth is called the ________________________.:
. Neonatal line
Tooth
Enamel
Dentin
Cementum
Irregular intertwining bundles of enamel rods, located primarily at the cusps, is known as _____________________ enamel.:
Gnarled
Scslloped
Hunter
Lines
Polarized
Brush-like areas of hypocalicified enamel rods at the DEJ are called __________.:
Enamel tufts
Tooth
Enamel
Dentin
Cememtum
Hypocalcified "cracks" in enamel, usually entending from the DEJ to the surface, are called _____________________.:
Enamel lamellae
Scslloped
Hunter
Lines
Polarized
Ends of odontoblastic processes that extend a short distance into the enamel are called _______________________.:
Enamel spindles
Mata
Cellin
Crown
Tooth
Enamel formed at a small spot in a location other than normal is called an ________.:
Enamel pearl
Scslloped
Hunter
Lines
Polarized
Enamel can sometimes be formed in other locations other than the crown. The most common area for this to occur is at the ________________________.:
Furcation
Hunter
Shreger
Bands
Band Hunter
An antibiotic which can cause severe staining of enamel if given during amelogenesis is __________________________.:
Tetracycline
Mata
Cellin
Crown
Tooth
Excess fluoride incorporated into enamel during amelogenesis can cause mottling and pitting and is called __________________.:
Fluorosis
Necro
Eugina
Amelo
Mottling
Trauma or high fevers can cause _______________________________.:
Enamel hypoplasia
σ½Necro
σ½ Eugina
σ½ Amelo
σ½ Mottling
A hereditary condition that results in severely impaired enamel is called ___.:
Amelogenesis imperfect
Hunter
Shreger
Bands
Band Hunter
The most common developmental problem with teeth is a general condition with 'too little' enamel, also often caused by metabolic disease, and is called _________________.:
Enamel hypoplasia
Necro
Eugina
Amelo
Mottling
Name four causes of external staining ____.:
Coffee, tea, tobacco, red wine, betel nuts
Hunter
Shreger
Bands
Band Hunter
Name two common conditions which affect teeth and enamel due to aging ____.:
Attrition and staining
Staining steel
Junction
Cemen
Dentin
Dentin Embryologic development:
Dental papilla
Dental lamina
Dental epithelium
Dental cell
Dental tube
Dentin formative cells:
Odontoblasts
Dental lamina
Dental epithelium
Dental cell
Dental tube
Dentin Mineral Level (inorganic):
70%
80%
90%
100%
50%
Dentin Organic/H2O level:
20% / 10%
30%
40%
50%
60%
Dentin Incremental lines:
Imbrication lines of Von Ebner
Imbrication lines
Von Ebner
Lines
Ebner
Dentin is a mineralized connective tissue that is perforated by microscopic parallel channels called __________:
Dentinal tubules
Dental lamina
Dental epithelium
Dental cell
Dental premier
Dentinal tubules are more ____ and of ______ diameter at the pulpal aspect of the dentin:
Concentrated, larger
First molar, second molar
Premier, secondary
Smaller, median
First molar, second molar and Premier, secondary
The wall of each tubule is composed of a layer of hypermineralized dentin matrix termed _______ _______:
Peritubular dentin
First molar, second molar
Premier, secondary
Smaller, median
First molar, second molar and Premier, secondary
Each dentinal tubule contains a cytoplasmic extension of the odontoblast cell body termed an ______ _______.:
Odontoblastic process
Dental lamina
Dental epithelium
Dental cell
Dental premier
The presence of vital _______ qualifies dentins as a living tissue.:
Odontoblastic processes
First molar, second molar
Premier, secondary
Smaller, median
First molar, second molar and Premier, secondary
Name the 4 components of the periodontium. ______________:
Cementum, alveolar bone, PDL, lamina propria of gingiva facing tooth
Gingiva
Cementum
Alveolar
PDL.
From where do all these structures originate? ______________________:
Dental follicle/sac
Dentin
Cementum
Alveolar
PDL
Bone is (vascular or avascular) ____________________, cementum is ______:
Vascular, avascular
Os
Suture
Bone
A;veolar
About what % organic and % inorganic is cementum?___________, :
About 50/50
20
30
40
60
Which mineralized tissue has the highest fluoride content? :
Cementum
Dentin
Enamel
ACJ
Bone
The first cementum laid down is called __:
Cementoid
Dentin
Enamel
Tubule
Root
The ends of collagen fibers embedded in both cementum and bone are called:
Sharpey's fibers
John fibers
Robert fiber
Ronado fiber
Jame fiber
In the root of the tooth, which tissue is formed first, dentin orcementum?_:
Dentin
Cementum
Enamel
Pupl
ACJ
Coarse extrinsic collagen fibers are formed by ____________________.:
Fibroblasts
Premiered
Second
Third
Oral
Fine intrinsic collagen fibers are formed by _______________________.:
Cementoblasts
Dentin
Enamel
Fiber
Apical
If a cementoblast becomes surrounded by cementum matrix, it is then called a :
Cementocyte
Dentinal
Junction
Fiber
Safe fiber
Incremental growth lines in cementum are called _________:
Lines of Salter
Fiber
Odontoblast
Cementusis
Alveolar
Cementocytes reside in and their processes extend into:
Lacunae, canaliculi
Lamina
Canal
Tube
Cyst
The two main types of cementum are called and:
Cellular, acellular
Lamina
Canal
Tube
Cyst
Further classification adds fibers. Acellular extrinsic fibrillar cementum is found in what location? Its main function is ___:
Cervical 2/3 of the root, anchorage
Cervical ½
Cervical 1/4
Cervical 1/5
Cervical 1/6
Acellular afibrillar cementum is only found in :
Coronal cementum
Colonado
Ameosay
Saya
Yard
Cellular intrinsic fibrillar cementum is found when the cementum needs :
Repair
Fix
Care
Keep
Safe
Cellular mixed fibrillar cementum can be found in the :
Root furcation
Apical
Root
ACJ
Dentin
The radicular 1/3 of the tooth has primarily which type of cementum?:
Cellular
Lalucell
Ameoblast
Solute
Poison
In approximately 60% of cases, the cementum the enamel. (overlaps, meets, does not meet-exposed dentin):
Overlaps
Oversleep
Overtime
Over
Under
Which is more resistant to resorption, cementum or bone? :
Cementum
Red
Blue
Orange
Dentin
Excess cementum formation is called :
Hypercementosis
Hypo
Hyposis
Theiss
Cemtume
A mass of cementum found free in the PDL is called a :
Cementicle
Fiber
Dentin
Bone
Cell
Three pairs of accessory digestive organs that lie outside the mouth:
Salivary glands
Cell
Dentin
Cementum
Enamel
Secretion of salivary glands:
Hypo
Hyposis
Theiss
Cemtume
Saliva
Salivary glands release saliva into these, emptying into the oral cavity:
Ducts
Hollond
Space
Free
Busy
Three pairs of salivary glands
Parotid, submandibular, sublingual
Maxilla
Mandible
Molar
Apical
Located inferior and anterior to the ears between the skin and the masseter muscle:
Parotid glands
Sub gland
Middle gland
Center gland
Post gland
Found in the floor of the mouth; medial and partly inferior to the mandible:
Submandibular glands
Maxilla
Mandible
Molar
Apical
Beneath the tongue and superior to the submandibular glands:
Sublingual glands
Sub gland
Middle gland
Center gland
Post gland
Fluid secreted by the salivary glands:
Saliva
Sub gland
Middle gland
Center gland
Post gland
99.5% water, 0.5% solutes:
Saliva
Maxilla
Mandible
Molar
Apical
Component of saliva that helps dissolve foods so they can be tasted and digestive reactions can begin
Water
Sweet
Salt
Chili
Dummy
Digestive enzyme in saliva that begins the digestion of starches in the mouth:
Salivary amylase
Cel
Membrand
Cell
Obait
Three solutes in saliva:
Salivary amylase, mucus, lysozyme
Lysozyme
Amylase
Mucus
Salivary
Enzyme in saliva that kills bacteria:
Lysozyme
Oss
Layer
Sell
Cell
Protects the mouth's mucous membrane from infection and the teeth from decay:
Lysozyme
Oss
Layer
Sell
Cell
The secretion of saliva:
Salivation
Oss
Layer
Sell
Cell
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