Dentosphere : World of Dentistry

CLICK HERE TO SHARE THIS POST...!!! This post contains 33 sorted diagrams of histopathological pictures of pathologies related to oral and maxillofacial regions. From benign to malignant neoplasms of oral cavity, salivary gland tumors, cyst and tumors of jaws and oral cavity, to lesions affecting nerves and muscles and soft tissues, it contains all you need to have a good command in oral pathology.  These diagrams were drawn with Hematoxylin and Eosin colored Pencils by Raman Dhungel during his Bachelor of Dental Surgery course on third year at B.P. Koirala Institute of Health Sciences, BPKIHS Dharan.  The slides included in this video are: Fibroma, FIbrosarcoma, Papilloma, Verrucous carcinoma, Mild dysplasia, Carcinoma in situ, Squamous cell carcinoma (well differentiated), Neurilemmoma, Neurofibroma, Oral submucous fibrosis, cavernous hemangioma, Lipoma, Lichen planus, malignant melanoma, osteosarcoma, pleomorphic adenoma, warthin's tumor, Adenoid cystic carcinoma, ...

Behçet’s syndrome is a multisystem disease that predominantly affects young males and is characterized by multiple superficial, painful “aphthous-like ulcers” in the oral cavity. However to fulfill the criteria of being Behçet’s syndrome, clinically there should be a presence of an aphthous-like ulcer in the oral cavity along with at least two of the following lesions e.g. skin lesion, eye lesion or genital lesion, etc. ETIOLOGY Etiology of Behcet’s syndrome is unknown; however, the disease is believed to be caused by some immunologic abnormality. CLINICAL FEATURES Oral lesions: Aphthous-like ulceration in the oral cavity. Skin lesions: Erythematous macular, papular, vesicular or pustular lesions in the skin; thrombophlebitis may also sometimes develop. Eye lesions: Ocular lesions in Behçet’s syndrome include uveitis, conjunctivitis, photophobia and retinitis, etc. Genital lesions: Ulceration in the genitalia, which looks similar to those of the oral cavity. Other lesi...

Pyogenic granuloma represents an over-exuberant tissue reaction to some known stimuli or injuries. The term pyogenic granuloma is somewhat a misnomer since the condition is not associated with pus formation. CLINICAL FEATURES Age: occurs at an early age. Sex: seen more frequently in females. Site: mostly occurs in relation to the gingiva, however on rare occasions, other mucosal sites may be involved. PRESENTATION • The lesion appears as a small, pedunculated or sessile, painless, soft, lobulated growth on the gingiva • Labial surface of the gingiva is more frequently affected than the lingual surface. • The lesion is often ulcerated and bleeds profusely, either upon provocation or spontaneously. • The ulcerated area of the lesion is often covered by a yellow fibrinous membrane. • The rate of growth of the lesion is very rapid and its maximum size could be up to 1 cm in diameter •Untreated lesion of pyogenic granuloma undergoes fibrosis due to decreased vascularity a...

Time: 2 Hours                             Total Marks: 125 1. Mention five points of difference between cellular and acellular cementum.    - 5 2. Mention five points of difference between primary and permanent pulp tissues.    - 5 3. Define Crest of Curvature. Describe the Crest of Curvature of a maxillary canine from all four aspects with a neat labeled diagram.    - 2+4 = 6 4. Describe six points of difference between primary and permanent human dentition.      - 6 5. Describe the labial aspect of the permanent mandibular right lateral incisor.      - 6 6. List and discuss the functions of dental pulp.    - 6 7. Mention the different types of the cementoenamel junction and discuss the formation of any one.  - 6 8. Discuss the phenomenon of formation of Hunter-Schreger band.      - 6 9. Describe lat...

An abscess is a cavity filled with pus and lined by a pyogenic membrane. There are three varieties of abscess : Pyogenic abscess (commonest) Pyaemic abscess Cold abscess Sometimes, the abscess cavity persists, which becomes firm and contains sterile pus. The firmness is due to thickness of its wall. This is known as 'antibioma'. This is due to continuous administration of antibiotics. The lump may even be hard, when it may mimic a carcinomatous lump. Basic principle of treatment of an abscess is: to drain the pus to send the pus for culture and sensitivity test, and to give proper antibiotic Drainage of a pus can be obtained by free incision or by Hilton's method. Hilton's method is chosen when there are plenty of important structures like nerves and vessels around the abscess cavity, which are liable to be injured.  Incision should be made parallel to important structures like nerves and vessels, while the muscle should be incised along the line o...

Anatomy 2016 1. Draw a well-labeled diagram of the transverse section of midbrain at the level of the superior colliculus. 5 2. Write down the blood supply of internal capsule with suitable diagram. 5 3. Mention the blood vessels forming the Circle of Willis along with a diagram. 5 4. Name the lobes of the cerebral cortex. Name the functional areas & the functions related to any one lobe of the cerebral cortex.  5 5. Write a short note on: 2x5=10 a. Medial Medullary Syndrome b. Nuclei of thalamus 2015 1. Draw a well-labeled diagram of T.S. of midbrain at the level of the superior colliculus. 5 2. Draw a well-labeled diagram of T.S. of spinal cord showing ascending and descending tracts. 5 3. Draw a labeled histological diagram of cerebrum.5 4. Mention nuclei of thalamus with suitable diagram. 5 5. Draw a labeled diagram of Circle of Willis. 5 6. Draw a labeled diagram of the floor of the fourth ventricle. 5 2014 1. Draw a labeled diagram of blood supply ...

A man found a cocoon of a butterfly. One day a small opening appeared, he sat and watched the butterfly for several hours as it struggled to force its body through that little hole. Then it seemed to stop making any progress. It appeared as if it had gotten as far as it could and it could go no further. Then the man decided to help the butterfly, so he took a pair of scissors and snipped off the remaining bit of the cocoon. The butterfly then emerged easily. But it had a swollen body and small, shriveled wings. The man continued to watch the butterfly because he expected that, at any moment, the wings would enlarge and expand to be able to support the body, which would contract in time. Neither happened! In fact, the butterfly spent the rest of its life crawling around with a swollen body and shriveled wings. It never was able to fly. What the man in his kindness and haste did not understand was that the restricting cocoon and the struggle required for the butterfly to get thr...