## **Core Concept**
Enamel reshaping or dental contouring involves minor modifications to the existing contours of teeth to improve the appearance of a smile. This cosmetic dental procedure aims to enhance the shape and surface of teeth.

## **Why the Correct Answer is Right**
The correct term for minor modifications done to improve a smile by adjusting the contours of existing teeth is **Enamel Reshaping**. This procedure involves removing small amounts of enamel from the teeth to change their shape, improve their appearance, and often enhance the overall smile. It is a conservative approach compared to more invasive dental restorations.

## **Why Each Wrong Option is Incorrect**
- **Option A:** While dental restorations can improve the appearance of teeth, the term does not specifically refer to minor modifications of tooth contours for cosmetic purposes.
- **Option B:** This option might relate to procedures that affect the teeth, but it does not accurately describe enamel reshaping or contouring.
- **Option C:** Orthodontics involves the movement of teeth to correct their position and alignment, which is not the same as minor contour adjustments for cosmetic reasons.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that enamel reshaping is often used to fix minor chips, adjust the shape of teeth, or change the alignment of teeth slightly, but it is not suitable for significant corrections or alignments, which would require orthodontic treatment.

## **Correct Answer:** D. Enamel Reshaping.