Dentosphere : World of Dentistry

# Age-related gingival recession can be best treated by: A. Gingivoplasty B. Pedicle graft C. Free gingival graft D. No treatment The correct answer is D. No treatment. Gingival recession increases with age, the incidence varies from 8% in children to 100% after the age of 50 years. This has led to some investigators to assume that recession may be a physiologic process related to ageing. 

 # Facial surface of which tooth is most affected by gingivitis?  A. Upper first molar  B. Lower first molar  C. Lower central incisor  D. Lower premolar The correct answer is A. Upper first molar. Facial surface of upper first molar and lingual surface of lower central incisors is most affected by gingivitis. This is due to close proximity to opening of salivary ducts.

 # Life saver shaped gingival enlargement of marginal gingiva is called:  A. Stillman's cleft  B. McCall's festoons  C. Widow peaks  D. Craters The correct answer is B. McCall's festoons. The term McCall's festoons has been used to describe a rolled, thickened band of gingiva that is usually seen adjacent to the cuspids when recession approaches the mucogingival junction. Stillman clefts are apostrophe shaped indentations extending to marginal gingiva. They are usually present on facial surface.  Craters are bony defects or concavities found in interdental areas. Widow peaks are pseudo piling up of gingiva when failed to remove bony discrepancies at gingival line angles during osteotomy procedures. These are peaks of residual cortical bone left out during horizontal grooving at the facial/palatal/lingual line angles. 

 # One of the radiographic finding of Aggressive periodontitis is arc shaped bone loss extending from: A. Distal surface of the second premolar to mesial surface of second molar B. Distal surface of the first premolar to mesial surface of first molar C. Mesial surface of the second molar to distal surface of the first premolar D. Mesial surface of the first premolar to distal surface of the second premolar The correct answer is A. Distal surface of the second premolar to mesial surface of second molar - Localized Juvenile Periodontitis is characterized by distribution of lesions in the first molars and incisors with least destruction in the cuspid-premolar area whereas in Generalized Juvenile periodontitis, there is generalized involvement of teeth. - Vertical bone loss around incisors and molars in otherwise healthy teenagers is diagnostic of Localized juvenile periodontits. - There is an arc shaped bone loss extending from distal surface of second premolar to mesial surface of se...

# Which  is  the  preferred  method  of  biopsy  in  case  of  a  malignant  involvement  of  lymph  node?  a. Fine needle  aspiration  b. Incisional  biopsy c. Excisional biopsy  d. No  biopsy The correct answer is A. Fine needle aspiration. Fine-needle aspiration (FNA) is a diagnostic procedure used to investigate lumps or masses. In this technique, a thin (23–25 gauge (0.52 to 0.64 mm outer diameter)), hollow needle is inserted into the mass for sampling of cells that, after being stained, are examined under a microscope (biopsy). The sampling and biopsy considered together are called fine-needle aspiration biopsy (FNAB) or fine-needle aspiration cytology (FNAC) (the latter to emphasize that any aspiration biopsy involves cytopathology, not histopathology). Fine-needle aspiration biopsies are very safe minor surgical procedures. Often, a major surgical (excisional or open) biopsy ...

 # The pulp stem cells are: A. Pluripotent in nature B. Totipotent in nature C. Multipotent in nature D. None of the above The correct answer is A. Pluripotent in nature. Pulpal stem cells are pluripotent in nature. The stem cells were shown to undergo proliferation and migrate to the site of injured odontoblasts and produce dentin.

 # A young man of 24 years is suffering from Generalized Anxiety Disorder; which drug may be preferred for his problem? a. Zolpidem b. Buspirone c. Midazolam d. Triazolam e. Phenobarbital The correct answer is B. Buspirone. Buspirone is the first azapirone, a new class of antianxiety drugs, distinctly different from Benzodiazepines.  Buspirone:  • Does not produce significant sedation or cognitive/functional impairment. • Does not interact with BZD receptor or modify GABAergic transmission. • Does not produce tolerance or physical dependence. • Does not suppress BZD or barbiturate withdrawal syndrome. • Has no muscle relaxant or anticonvulsant activity. Buspirone relieves mild-to-moderate generalized anxiety, but is ineffective in severe cases, in those showing panic reaction and in OCD. Though most patients on buspirone remain alert, those operating machinery/motor vehicles should be cautioned. Dose: 5–15 mg OD–TDS: