NEET MDS Shorts
63487
Community DentistryThe OHI-S (Oral Hygiene Index-Simplified) is a clinical index developed to assess oral hygiene status by measuring the amount of oral debris and calculus present on the teeth. It provides a simple and effective way to evaluate the cleanliness of the mouth and is widely used in dental research and practice.
81264
Periodontics
After periodontal surgery, root sensitivity is primarily due to the exposure of dentin tubules (option 1). When the root surface is exposed, the dentin becomes sensitive to stimuli because the tubules can transmit sensations to the pulp.
Exposed cementum (option 2) is less likely to cause sensitivity because cementum is not as innervated as dentin. Formation of plaque (option 3) can lead to sensitivity as it may irritate the surrounding tissues and contribute to inflammation.
74956
Oral PathologyThe epithelial lining of the mucosa is least affected in Vitamin C deficiency.
28802
General Medicine
Hemophilia A is a congenital defect due to various abnormalities of the gene on the X chromosome that codes for factor VIII, leading to a hemorrhagic diathesis. Hageman trait is also congenital but does not directly cause a bleeding disorder.
89561
ProsthodonticsThe cementing medium provides the greatest retention for an onlay. While proximal contacts, intracoronal portions, and cusp slopes contribute to retention, the cement creates the primary bond between the restoration and tooth structure. Modern adhesive cements provide both mechanical and chemical retention that is crucial for onlay success.
90770
NEETMDS
Mucormycosis in the oral cavity often manifests as palatal ulcers or necrosis of the jaw bones. Oral lesions typically appear as ulcerations with irregular borders and may involve pain or erythema.
86918
EndodonticsSuccess of reimplanted avulsed tooth depends on all the mentioned factors: 1) Proper antibiotic coverage prevents infection that can trigger inflammatory resorption, 2) Prevention of PDL dehydration is crucial - maintaining viable periodontal ligament cells is key to successful reattachment, 3) Protection of socket from trauma and contamination promotes healing. Additional factors include: extraoral time (should be <30 minutes), appropriate storage media (milk, saline), gentle handling of root surface, and prompt professional treatment. All these factors work together to maximize success.
10946
NEETMDSThe standard pitch of a Hyrax screw (a type of palatal expander screw) is 0.8 mm. This pitch determines the amount of expansion achieved with each turn of the screw.
22600
Dental MaterialsDie stone has great strength and hardness
20771
Dental Materials
Temporary cements are used to hold a temporary restoration in place until the final restoration can be placed, and they should have a lower compressive strength to allow for easy removal.