NEET MDS Shorts
70724
NEETMDSIn odontogenic space infections, the causative bacteria are typically a mix of aerobic and anaerobic species, often originating from dental plaque. Therefore, a broad-spectrum antibiotic that covers a wide range of these potential pathogens is generally the appropriate choice for initial empirical treatment.
23519
Oral Pathology
1. Anodontia: This is the complete absence of teeth. It is a rare condition
where an individual fails to develop any teeth.
2. Oligodontia: This term is used when an individual has fewer teeth than the
typical dental formula, which is six incisors, two canines, two premolars, and
six molars in the permanent dentition (excluding the third molars or wisdom
teeth). The term "hypodontia" is often used synonymously with oligodontia, but
hypodontia can also refer to a broader range of conditions characterized by the
congenital absence of one or more teeth, whereas oligodontia is more
specifically the absence of six or more teeth.
3. Microdontia: This condition involves teeth that are smaller than normal. It
can affect either the primary or permanent dentition and may involve one tooth
or multiple teeth.
4. Dens in dente: This is a rare developmental anomaly where a tooth forms
within the dental crown of another tooth, typically in the form of a small
tooth-like structure. It is not a condition of tooth number but rather an
abnormality of tooth structure.
54889
NEETMDSAdrenochrome monosemicarbazone and ethamsylate are considered systemic hemostatics, rather than local ones, but among the options provided, this is the intended answer for a conceptual question. Local hemostatics are typically physical agents like gelatin sponges or oxidized cellulose, or topical adrenaline, which act directly at the site of bleeding. Systemic hemostatics like the options listed work throughout the body to improve clotting or reduce capillary bleeding.
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.
51501
Conservative Dentistry
The final polish of a cast gold alloy to achieve a smooth polished surface is
done by
1) Pickling: This is a process used to remove oxides and impurities from the
surface of a metal before applying a final finish. However, it does not provide
the final polish.
2) Electropolishing: This technique uses an electrical current to dissolve the
metal surface and create a smooth finish, but it is not commonly used for gold
alloy restorations.
3) Sandblasting: This method involves propelling an abrasive material against
the metal surface to smooth and clean it, but it is too aggressive for the final
polish of a gold alloy restoration.
4) Rouge: Rouge is a fine abrasive paste used with a polishing wheel or point to
achieve the final polish on a cast gold alloy restoration. It removes minor
imperfections and gives a high luster to the metal.
The correct answer is 4) Rouge, as it is the standard technique for achieving a
smooth, polished surface on cast gold alloys.
29274
ProsthodonticsExplanation: Wrought wire clasps are more flexible than cast clasps, allowing them to engage undercuts more effectively. However, they require a greater depth of undercut to achieve the same retention as cast clasps. This is because wrought wire clasps can flex and adapt to the contours of the tooth better than rigid cast clasps. The other statements are incorrect regarding the comparative abilities of clasp materials and their engagement with undercuts.
63441
Oral SurgeryFor a patient taking 60 mg hydrocortisone daily, the dose should be doubled on the day before extraction. Chronic steroid therapy suppresses the hypothalamic-pituitary-adrenal axis, and surgical stress can precipitate adrenal crisis. Doubling the steroid dose provides adequate coverage for the surgical stress while preventing adrenal insufficiency.
65285
EndodonticsThe main objective of obturation is to fill the canal and prevent apical percolation of fluids. This primary goal involves: 1) Creating a fluid-tight seal at the apical foramen, 2) Preventing bacterial penetration from oral cavity, 3) Eliminating pathways for tissue fluid seepage, 4) Preventing recontamination of treated root canal system. While preventing discoloration and providing support for restoration are secondary benefits, the fundamental purpose is to achieve biological seal that prevents apical periodontitis by eliminating bacterial access to periapical tissues.
24871
NEETMDS
The interdental col is the non-keratinized, saddle-shaped area of gingiva that connects the buccal and lingual papillae. Its non-keratinized nature and location make it more vulnerable to bacterial plaque accumulation and subsequent inflammation and breakdown compared to the keratinized
free gingiva or the
gingival sulcus lining.
79278
Physiology
Deglutition begins with the voluntary stage, where food is moved into the pharynx. This is followed by the pharyngeal stage, an involuntary process that includes closure of the glottis and opening of the esophagus. Finally, the esophageal stage is an involuntary process where food is propelled into the stomach through peristaltic movements.