MDS PREP
Facial paralysis resulting in drooping of a corner of the mouth and excess lacrimation is characteristic of which of the following conditions
1. Bell"s palsy
2. Tic douloureux
3. Meniere"s disease
4. Stevens-Johnson syndrome
Oral Pathology
Answer: 1
Facial paralysis with drooping of the mouth and excess lacrimation is characteristic of Bell's palsy.
Thistle-tube appearance of pulp chamber is a feature of
1) Coronal dentin dysplasia
2) Regional odontodysplasia
3) Dentinogenesis imperfecta
4) Amelogenesis imperfecta
Oral Pathology
Answer: 1
Coronal dentin dysplasia is a genetic condition that affects the development of dentin, leading to abnormal pulp chamber morphology. The "thistle-tube" appearance refers to the shape of the pulp chamber, which resembles a thistle tube due to the constricted and elongated form of the pulp space. This condition is characterized by a normal crown appearance but with significant alterations in the pulp chamber and root canal system, making it distinct from other dental dysplasias.
Premature exfoliation of deciduous teeth is seen in
1. Hypophosphatasia
2. Hypophosphataemia
3. Hyperphosphtasia
4. Hyperparathyrroidism
Oral Pathology
Answer: 1
Premature exfoliation of deciduous teeth is seen in hypophosphatasia.
An exophytic papillary lesionof the hard palate, consisting of a luminal layer of columnar cells resting on a cuboidal basal layer, with the connective tissue papillae containing plasma cells, could be�
�1. Monomorphic adenoma
�2. Simple ductal papilloma
�3. Oxyphilic adenoma
�4. Sialadenoma papilliferum
Oral Pathology
Answer: 4
Sialadenoma papilliferum is a rare, benign
salivary gland tumor typically occurring in the palate. It presents as an
exophytic, papillary lesion and histologically shows a dual epithelial layer
(columnar and cuboidal) with connective tissue cores that may contain plasma
cells. The other options, such as monomorphic adenoma or simple ductal papilloma,
lack these specific histological features.
Which of the following is not characteristic of congenital syphilis?�
�1. Ghon complex
�2. Interstitial keratitis
�3. Mulberry molars
�4. Notched incisors
Oral Pathology
Answer: 1
Ghon complex is associated with primary tuberculosis, not congenital syphilis. The other options (interstitial keratitis, mulberry molars, and notched incisors) are indeed characteristics of congenital syphilis.
Darier"s disease is the other name for
1. Pernicious anaemia
2. Deficiency of Vit A involving mucosa and epithelium
3. Rickets involving teeth and bones
4. Protein malnutrition
Oral Pathology
Answer: 2
Darier�s disease is associated with a deficiency of Vitamin A involving mucosa and epithelium.
In which disease state do the cartilage columns lack orderly arrangement, fail to calcify properly and are not resorbed and replaced by bone in the usual fashion?
1. Osteopetrosis
2. Cherubism
3. Pierre-Robin syndrome
4. Achondroplasia
Oral Pathology
Answer: 4
In achondroplasia, the cartilage columns lack orderly arrangement and fail to calcify properly.
Dens in dente is thought to arise as a result of
1. a normal tooth but enclaved within an other tooth, during formation
2. proliferation and evagination of an area of the inner enamel epithelium
3. extensive growth of mesenchymal cells of pulp tissue
4. an invagination of the enamel organ during tooth formation
Oral Pathology
Answer: 4
Dens in dente is a rare developmental dental anomaly that is characterized by a tooth with an invaginated or cavity-like structure that appears like a "tooth within a tooth." It arises from an error during the morphodifferentiation stage of tooth development.