Question

Cheese-like material composed of food particles, desquamated epithelial cells, leukocytes, and microbes, which can be easily displaced with water spray, is known as:

• A. Materia alba
• B. Pellicle
• C. Calculus
• D. Acquired plaque

Hint:

Materia alba can be easily removed with water spray and is often found in areas where plaque has accumulated.

Answer 1

The Correct Option is A

The question asks about a cheese-like material composed of food particles, desquamated epithelial cells, leukocytes, and microbes, which can be easily displaced with water spray. This is a factual question in the subject of periodontics, specifically regarding oral hygiene substances.

Let's examine each option to understand why "Materia alba" is the correct answer:

1. Materia alba: This refers to a white or yellowish accumulation of bacteria, epithelial cells, leukocytes, and food particles. It is loosely attached to the tooth surfaces or gingiva and can be easily removed with water spray or oral irrigation. Its cheese-like appearance is due to its consistency and composition.
2. Pellicle: The pellicle is an organic film that forms on the enamel surface shortly after cleaning. It does not have a cheese-like appearance and cannot be easily displaced with water alone since it adheres strongly to the teeth.
3. Calculus: This refers to calcified deposits that form on the teeth due to the mineralization of dental plaque. Calculus is hard and not cheese-like; it requires professional dental instruments for removal.
4. Acquired plaque: Dental plaque is a biofilm of microorganisms on the tooth surface. While it is substantial in volume and can lead to further oral health issues, it is not typically described as cheese-like in appearance and is not as easily removed as materia alba.

Based on the above analysis, the most accurate option that matches the description provided in the question is Materia alba. It is a loose, cheese-like material that can be removed with simple rinsing or water spray, distinguishing it from other dental accumulations like calculus or plaque.