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WorksheetsOP Quiz
Total questions: 74
Worksheet time: 37mins
Name
Class
Date
1.
All of the following are part of or arise from the dental organ except the
a)
rests of Malassez
b)
reduced enamel epithelium
c)
epithelial root sheath
d)
cervical loop
2.
Mitochondria in association with basal infoldings of the plasmalemma are characteristically found in<br />
a)
excretory duct cells
b)
serous cells
c)
intercalated duct cells
d)
striated ( secretory) duct cells
3.
The most common route by which infection may reach the pulp is through
a)
Thebloodstream
b)
Traumaticinjuries
c)
Dental caries
d)
Erosion
4.
White, interlacing lines (striae of Wickham) on the buccal mucosa are a characteristic clinical feature of
a)
Leukoplakia
b)
LupusErythematous
c)
Lichen planus
d)
Psoriasis
5.
Preparing a tooth for a restoration may stimulate all of the following actions except
a)
Preparing a tooth for a restoration may stimulate all of the following actions except
b)
death of odontoblasts
c)
sclerotic dentin formation
d)
dead tract formation
6.
All of the following can be considered odontogenic tumors except
a)
Myxoma
b)
Lipoma
c)
Calcifying Oodntogenic cyst
d)
Cementoma
7.
Lesion that characteristically occurs on the alveolar ridges of infants is
a)
Congenital lymphangioma
b)
Fordycegranules
c)
Bohn’s nodules
d)
Whitespongenevus
8.
The epithelial rests (of Malassez) arise from
a)
dental follicle
b)
outer dental epithelium
c)
dental organ
d)
inner dental epithelium
9.
Compound odontoma resembles
a)
Tooth like structure
b)
Seen in posterior mandible
c)
Doesn't show pulp tissue
d)
All of the above
10.
All of the following is the functions of The Stellate Reticulum except:
a)
Keep Space for The enamel development.
b)
Act as a reservoir for nutritive materials.
c)
Act as a cushioned to protect ameloblasts.
d)
Secretes alkaline phosphatase enzyme.
11.
The epithelial root sheath of Hertwig disintegrates:
a)
After odontoblastic differentiation & before dentin matrix formation.
b)
After odontoblastic differentiation & dentin matrix deposition.
c)
Before odontoblastic differentiation.
d)
After cementum formation.
12.
All of the following is a function of dental sac except:
a)
Nutrition of enamel organ.
b)
Formation of cementum.
c)
Formation of periodontal ligament.
d)
Formation of supporting alveolar bone.
13.
The lateral dental lamina gives rise to:
a)
Deciduous teeth .
b)
Permanent successors.
c)
Permanent molars.
d)
Vestibular lamina.
14.
Mycosis Fungoides is a
a)
Fungal infection
b)
Bacterial Infection
c)
Malignant Lymphoma
d)
Multiple Myeloma
15.
The Melkersson-Rosenthal syndrome is characterized by facial paralysis, Cheilitis granulomatosa, and
a)
BlackHairytongue
b)
Scrotaltongue
c)
Geographic tongue
d)
Bifidtongue
16.
A structure in the oral cavity that is covered for the most part by stratified squamous keratinized epithelium is the<br />
a)
hard palate
b)
soft palate
c)
buccal mucosa
d)
floor of the mouth
17.
Which of the following are true neoplasm of cementoblsts
a)
Cementoma
b)
Cementicles
c)
Cemental Hyperplasia
d)
Periapical Cemental Dysplasia
18.
A pear-shaped radiolucency causing displacement of the roots of vital maxillary lateral and cuspid teeth is characteristics of
a)
Globulomaxillarycyst
b)
Apicalperiodontalcyst
c)
Primordial cyst
d)
Nasoalveolarcyst
19.
The gingival area where nonkeratinized epithelium most frequently occurs and which, therefore, may be considered most vulnerable to inflammation is the
a)
sulcular surface of the free gingiva
b)
palatal gingiva
c)
unattached gingiva
d)
attached gingiva
20.
The classic triad of Hand-Schuler-Christian disease includes lesions of bone, exopthalmos and
a)
Diabetesinsipidus
b)
Hepatosplenomegaly
c)
Diabetes mellitus
d)
Albuminuria
21.
Leisegang Rings are found in
a)
Cementoma
b)
Calcifying Epithelial Odontogenic tumor
c)
Adenoameloblastoma
d)
Calcifying Odontogenic Cyst
22.
Which feature of cellular cementum best differentiates it from acellular cementum
a)
position on tooth
b)
separate and distinct functions
c)
embedded Sharpey's fibers
d)
lacunae
23.
Vesicles or bullae of the mucous membrane or skin are seen in all the following exceptel is produced by
a)
Herpessimplex
b)
Herpes zoster
c)
Agranulocytosis
d)
SLE
24.
High recurrance of OKC is due to all except
a)
Satellite cysts
b)
Scalloped margins
c)
focal areas of active growth
d)
low soluble proteins
25.
Osteosarcoma characteristically may develop in cases of
a)
Osteopetrosis
b)
Osteogenisisimperfecta
c)
Osteitisdeformans
d)
All of the above
26.
Cyst resembling a bunch of grapes
a)
Gingival cyst
b)
Botryoid Odontogenic Cyst
c)
dentigerous Cyst
d)
OKC
27.
Which of the following resembles the belly of a frog
a)
Retention cyst
b)
Ranula
c)
Extravasation Cyst
d)
Dermois Cyst
28.
Features of familial multiple neurofibroma with café-au-lait spots of the skin are typical of
a)
VonRecklinghausen’sdiseaseofskin
b)
Peget’sdiseaseofskin
c)
Hereditary ectodermal dysplasia
d)
Familialfibrousdysplasia
29.
Which of the following shows the presence of cholesterol crystals
a)
OKC
b)
Radicular Cyst
c)
Dentigerous Cyst
d)
Bohn's Nodules
30.
Pleomorphic Adenoma is
a)
A teratomatous tumor of Salivary Glands
b)
Neuroendocrinal tumor
c)
Basal and reserve cell origin
d)
Lacrimal Duct Origin
31.
Initiation of dental lamina is induced by:
a)
Neural crest cell.
b)
Endoderm.
c)
Ectoderm.
d)
Mesoderm.
32.
Primordium for the permanent dentition appears as an extension of dental lamina into the ectomesenchyme:
a)
Lingual to the developing primary tooth germ.
b)
Labial to the developing primary tooth germ.
c)
Mesial to the developing primary tooth germ.
d)
Distal to the developing primary tooth germ.
33.
The region where the inner and outer enamel epithelium meets at the rim of the enamel organ is known as:
a)
Zone of Flection.
b)
Cervical loop.
c)
Epithelial Diaphragm.
d)
Root Sheath of Hertwing's.
34.
Which the followings is not a function of stellate reticulum:
a)
Protection of the underlying dental tissues.
b)
Maintenance of tooth shape.
c)
Support the production of enamel.
d)
Control the position & number of tooth germs.
35.
The epithelial pearls are derived from:
a)
Dental lamina.
b)
Dental pulp.
c)
Dental sac.
d)
Dental organ.
36.
Odontoblasts start their secretory activity:
a)
Before enamel matrix production.
b)
After enamel matrix production.
c)
During enamel matrix production.
d)
During & after enamel matrix production.
37.
Preameloblasts differentiate into ameloblasts:
a)
After the differentiation of odontoblasts.
b)
Before the differentiation of odontoblasts.
c)
During the differentiation of odontoblasts.
d)
During & after the differentiation of odontoblasts.
38.
During the early stages of tooth development three transitory structures may be seen, these structures are:
a)
Enamel knot, enamel organ & enamel niche.
b)
Enamel knot, enamel cord & enamel niche.
c)
Enamel knot, enamel organ & enamel epithelium.
d)
Enamel niche, enamel organ & enamel knot.
39.
Atrophy of the, pharyngeal, and gastric mucosa, koilonychias (spoon nails), and predisposition to oral carcinoma in postmenopausal women are features of
a)
Irondeficiencyanemia
b)
Perniciousanemia
c)
Plummer-Vinsonsyndrome
d)
Sturge-Weber-Dimitri syndrome
40.
Chocolate colored fluid is seen in
a)
Dentigerous Cyst
b)
OKC
c)
Bartholin Cyst
d)
Warthin's tumor
41.
The irradiations to the head region do no cause
a)
Xerostomia
b)
Osteoradionecrosis
c)
Interference with tooth development
d)
RamsayHuntsyndrome
42.
The major inorganic component of dentin is
a)
collagen
b)
lactate
c)
hydroxyapatite
d)
desmosine
43.
Which of the following zone is an area of active remineralization
a)
surface zone
b)
body of the lesion
c)
dark zone
d)
translucent zone
44.
Chronic alcoholics may present with the features of
a)
erosions
b)
resorption
c)
abrasion
d)
attrition
45.
The structures of enamel thaThe “Ghon complex “is associated witht are more resistant to the actions of acids are
a)
Primaryofchildhoodtuberculosis
b)
Uveoparotid fever or Heerfordt’s syndrome
c)
Histiocystosis
d)
AIDS
46.
Transmission of S. mutans occurs mainly through
a)
Saliva
b)
Skin
c)
Mother to child
d)
Blood Transfusion
47.
Which of the following zone is an area of active remineralization
a)
translucent zone
b)
surface zone
c)
body of the lesion
d)
dark zone
48.
The features of multiple skeletal radiolucencies reversed A/G ratio, Bence Jones protein in the urine, and solid plasma cell infiltrate in the biopsy in a 50-year old man indicate a diagnosis of
a)
Metastaticprostaticcarcinoma
b)
Multiplemyeloma
c)
Hyperparathyroidism
d)
BasalcellNaviSyndrome
49.
Causes of hypercementosis can be all except
a)
Paget's Disease
b)
Periapical Inflammation
c)
Cleidocranial dysplasia
d)
Mechanical stimulation
50.
The most common malignancy found in the oral cavity is
a)
Basalcellcarcinoma
b)
Melanoma
c)
Squamouscellcarcinoma
d)
Pleomorphic Adenoma
51.
Ameloblast differentiation starts at the
a)
incisal region of the tooth germ
b)
cervical region of the tooth germ
c)
lateral regions of the tooth germ
d)
junction of stratum intermedium and stellate reticulum
52.
The cells responsible for root resorption are
a)
Fibroblasts
b)
Cementoblasts
c)
Oesteoblasts
d)
Osteoclasts
53.
Double teeth is an anamoly most commonly found in
a)
Permanent Incisors
b)
Permanent Canines
c)
Both 1 and 2
d)
Primary Molar
54.
Which of the following is an acquired disorder
a)
Gemination
b)
Fusion
c)
Concrescence
d)
None
55.
Most cases of pulpitis are caused by
a)
Bacterial Invasion from carious lesions
b)
injudicious cavity prep
c)
chemical irrigation from sterilizing agent
d)
bacterial invasion from blood stream
56.
Dry socket is a form of
a)
Osteomyelitis
b)
Osteitis
c)
Osteoma
d)
Periostitis
57.
Broad and pushing rete ridges are seen in
a)
Verrucous Carcinoma
b)
OSCC
c)
Oral Lichen Planus
d)
Verruca vulgaris
58.
Epstein's pearls are
a)
Enamel Pearls
b)
Tooth Bud Imperfections
c)
Vit D Def imperfections
d)
Cysts of newborn infants
59.
Pemphigus is
a)
Desomolytic defect
b)
Vesciculo-bullous defect
c)
Seen in Jewish often
d)
All of the above
60.
Failure of the tuberculum impar to retract prior to fusion of the lateral halves of the tongue results in
a)
Medianrhomboidglossitis
b)
Cleft(bifid)tongue
c)
Geographic tongue
d)
Sarcoma of tongue
61.
Hecks Disease
a)
HPV induced
b)
Shows Cobblestone appearance
c)
Seen at young age
d)
All
62.
The formation of the 1st tooth of the permanent dentition is initated in utero by the<br />
a)
4th mo
b)
5th mo
c)
6th mo
d)
7th mo
63.
Leontiasis Ossea is seen in
a)
Fibrous Dysplasia
b)
Vit D Deficiency
c)
Gwoth retardation
d)
All of the above
64.
Amelogenesis Imperfecta is a
a)
Hereditary Disease
b)
Involves Amelogenin protein
c)
Can cause pitting
d)
All of the above
65.
Appositional stage is confined to:
a)
Cap stage.
b)
Bud stage.
c)
Bell stage.
d)
Dental lamina.
66.
Concresense usually occurs with:
a)
Permanent maxillary molars.
b)
Permanent maxillary premolars.
c)
Permanent mandibular premolars.
d)
Permanent mandibular premolars.
67.
Supernumerary roots occur mainly with:
a)
Permanent third molars.
b)
Permanent second molars.
c)
Permanent first molars.
d)
Permanent second premolars.
68.
Enamel pearls occur in:
a)
Apical third of molars roots.
b)
Furcation area of molars.
c)
Cervical third of molars roots.
d)
Furcation area of premolars.
69.
The process of differentiation of mesenchymal cells into Odontoblasts is called:
a)
Initiation.
b)
Induction.
c)
Apposition.
d)
Morphodifferentiation.
70.
Concrescence is:
a)
An extra root or accessory roots in a formed tooth.
b)
Distorted root or roots in a formed tooth.
c)
A union of root structure of two or more teeth through cementum only.
d)
A spherical projection on the cemental root surface.
71.
What structure is formed in the crown first?
a)
Enamel.
b)
Cementum.
c)
Pulp.
d)
Dentine.
72.
Which of the following induces the dental papilla cells to be differentiated into odontoblasts?
a)
Stratum intermedium.
b)
Reduced enamel epithelium.
c)
Inner enamel epithelium.
d)
Outer enamel epithelium.
73.
No basal lamina is found between the cells of the:
a)
Stratum intermedium and inner enamel epithelium.
b)
Outer enamel epithelium and the dental sac.
c)
Inner layer of Hertwig's sheath and the dental papilla.
d)
Inner enamel epithelium and the dental papilla.
74.
Which of the following is not a functional activity of the enamel organ:
a)
Inducing the differentiation of Odontoblasts.
b)
Secretion of enamel matrix.
c)
Maturation of enamel.
d)
Formation of cementum.
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