## **Core Concept**
The question pertains to the changes in gingival keratinization with aging. Keratinization is a process by which epithelial cells become filled with keratin, leading to the formation of a hard layer on the surface of the gingiva. This process can affect the appearance and function of the gingiva.

## **Why the Correct Answer is Right**
With an increase in age, there is a tendency towards an increase in keratinization of the gingiva. This is a part of the natural aging process affecting oral tissues. As people age, the gingiva may become more keratinized, which can make it appear thicker and more resilient but also potentially more prone to cracking and irritation.

## **Why Each Wrong Option is Incorrect**
- **Option A:** This option is incorrect because it does not accurately reflect the change in keratinization with age.
- **Option B:** This option is incorrect as it suggests a decrease or no change, which contradicts the known effects of aging on gingival keratinization.
- **Option C:** Although not explicitly provided, if this were a distractor, it would be incorrect based on the same reasoning as options A and B.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that aging affects the oral cavity in multiple ways, including changes in the gingiva such as increased keratinization. This can have implications for oral health, dental treatment planning, and the management of conditions like gingivitis and periodontitis.

## **Correct Answer:** . Decreases