NEET MDS Shorts
29645
INI CET
WHO pathfinder sampling methodology: A minimum of 25 subjects per site per age group is recommended. Calculation: 12 sites × 25 subjects per site = 300 subjects per age group. For 4 index ages: 4 × 300 = 1200.
15467
EndodonticsStabilization of avulsed tooth requires 1-2 weeks of splinting. This short period is recommended because: 1) Brief splinting allows periodontal ligament healing without ankylosis, 2) Extended splinting (>2 weeks) increases risk of replacement resorption and ankylosis, 3) Early mobilization promotes functional healing of periodontal ligament fibers, 4) Studies show optimal healing occurs with flexible splinting for 7-14 days, 5) Longer periods compromise the natural healing process and increase complications. Rigid or prolonged splinting should be avoided.
23443
PedodonticsThe diameter of the tip of a periodontal probe is 0.5 mm.
25112
EndodonticsThe success of a root canal filling is primarily assessed through clinical observation, which includes monitoring for signs of pain, swelling, and infection. While radiographs and the size of the gutta-percha cone used can provide additional information, the ultimate determinant of success is the patient's symptom resolution and the absence of pathology.
49224
AnatomyThe tendon of anterior belly digastric passes between the tendon ends of Stylohyoid muscle
14702
RadiologySubmentovertex view is most useful for mandibular fractures, particularly those involving the condylar region and mandibular angles. This view provides a unique perspective showing the mandible from below, clearly demonstrating fracture displacement and angulation.
11166
Conservative DentistryExplanation: The external shape of a Class V amalgam restoration is closely related to the contour of the marginal gingiva. This is important for aesthetic and functional reasons, as the restoration must blend seamlessly with the surrounding gingival tissue. The outline form should respect the natural contours to minimize plaque accumulation and promote periodontal health. While axial line angles and the direction of enamel rods are relevant to the preparation, they do not primarily dictate the external shape of the restoration.
25048
Oral PathologyEasy fatigability of muscles is characteristic of myasthenia gravis, an autoimmune disorder affecting neuromuscular transmission. Patients experience progressive muscle weakness with repetitive use that improves with rest. Epilepsy involves seizure activity, MPDS involves muscle pain and spasm, and cerebral palsy involves spasticity, but none of these conditions primarily feature muscle fatigability.
36252
Oral and Maxillofacial Surgery
Pericoronitis is often caused by the accumulation of food debris and bacteria
beneath the operculum, which is the gum tissue covering the partially erupted
tooth. Trauma from the opposing tooth can exacerbate this condition by further
irritating the gum and facilitating the entry of bacteria.
59056
Dental Materials
Ist investments flow contain the α-hemihydrate of gypsum. because greater strength is obtained. This gypsum A slight expansion takes place between 400°C and approximately 700°C (1292°F). and then a large contraction occurs. This later shrinkage is most likely caused by decomposition and release of sulphur gases, such as sulphur dioxide. This decomposition not only causes shrinkage but also contaminates the casting with the sulphides of the nonnohlc alloying elements, such as silver and copper. Thus, it is imperative that gypsum investments should not be heated above 700°C (1292°F). however, for gypsum products containing carbon, the maximum temperature should be 650°C (1202°F). In this way, proper ut and uncontaminated alloys are obtained.
Gypsum-bonded investments are used for gold alloys. The essential ingredients of the dental inlay investment employed with the conventional gold casting alloys are α-hemihydrate of gypsum, quartz or cristobalite. which are allotropic forms of silica.
product serves as a binder to hold other ingredients together and provide rigidity. The strength of the investment is dependent on the amount of binder present.