Dentosphere : World of Dentistry

Based on anatomical location of carious lesion, Greene Vardiman Black (G.V. Black) classified tooth preparations into five different classes. Later an additional class, class VI was also added. Class I refers to pit and fissure lesions, whereas all other classes are smooth surface lesions. G.V. Black's Classification of Tooth Preparations Class I All pit and fissure preparations. It Includes: ➤ occlusal surfaces of premolars and molars, ➤ occlusal two-thirds of the facial and lingual surfaces of molars, and ➤lingual surfaces of maxillary incisors Class II Preparations involving the proximal surfaces of posterior teeth  (i.e. Premolars and Molars)

Who is a Dentist / Dental Surgeon ? A dentist is a person who is licensed by the nation or state's licensing body to practice dentistry independently. He can either run a private practice or work as a government employee or an employee in other's clinic. A dentist can examine and diagnose the disease of your oral cavity, perform restorations, rectify maloccluded teeth by the use of removable and fixed orthodontic appliances, extract your tooth, provide partial or complete / removable dental prostheses, etc. The dentist deals not only with the teeth, the rest of the soft tissues like tongue, palate, buccal and labial mucosa are also dealt by the dentist. Extra-oral lesions, swellings, and tumors of the head and neck region too come to the attention of the dentist first. Some facial reconstruction surgeries, surgical correction of cleft lips and palates, implants,etc. all come under the duties of a dentist or dental surgeon.

# Myoepithelial cells are present in: A. Striated duct B. Intercalated duct and terminal duct C. Serous cells D. Mucous cells # Carmalt's glands are: A. Major salivary glands B. Minor salivary glands(Retromolar) C. Minor salivary glands (lingual) D. Taste buds

# The normal pH of saliva is about: A. 5.5 B. 9.5 C. 7.5 D. 8.5 # Of the total amount of saliva secreted by all the salivary glands, about 60% is secreted by : A. Parotid glands B. Sublingual glands C. Submandibular glands D. None of the above

The theme for this year's world health day is depression, with a slogan- Depression: Let's Talk. Depression is aptly chosen as this year's theme because it is taking pandemic proportions in today's competitive world. More and more young generations are diagnosed as having depressions every day attributing to failures in relationships, academics, careers, finances and many other seemingly inconsequential reasons. As per the WHO's definition of health, health is a state of complete physical, mental and social well-being but not merely the absence of disease or infirmity. Yes, a person may seem well from others' perspective but he may be having troublesome issues within himself. He may not feel healthy mentally. Some unknown fear, apathy, anxiety may be lurking in his psyche and he may not know to whom he should consult. It is a global necessity that every one of us understands the fact that nobody is immune to mental illness and we should not attach a stigma t...

# The normal pH of saliva is about: A. 5.5 B. 9.5 C. 7.5 D. 8.5 # Of the total amount of saliva secreted by all the salivary glands, about 60% is secreted by : A. Parotid glands B. Sublingual glands C. Submandibular glands D. None of the above # The basket cells are also known as : A. Myoepithelial cells B. Endothelial cells C. Parenchymal cells D. None of the above # The three bilaterally paired major salivary glands are located : A. Extraorally B. Intraorally C. In tongue D. In neck # The parotid glands open through the : A. Stensen's duct B. Wharton's duct C. Bartholin's duct D. Blandin's duct # The saliva is neutralised due to: A. Mucin B. Ammonia C. Amino acids D. Bicarbonates # Among various glands, salivary gland secretion is unique in that, its secretions are controlled by: A. Hormones B. Ner...

B.P. Koirala Institute of Health Sciences (BPKIHS) is a tertiary health care center and referral center in eastern development region. Thousands of patients come here every day seeking outpatient medical care. It also has got a 700-bedded inpatient ward and the largest (in terms of manpower) emergency unit in the nation. There is also a separate College of Dental Surgery(CODS) for dental facilities which consist of nine different departments. So, a large amount of general waste and biomedical waste is produced from the hospital every day.  General waste includes paper and plastic packages of medicine, wrappers of junk foods, kitchen waste from hospital kitchen, etc. and biomedical waste includes used gloves, cotton dressings and gauges, used syringes and medicine bottles, excised body parts, etc. These waste materials must be suitably disposed of immediately lest they putrefy, emit foul smells, act as a source of infection and disease, and become a public health h...