**Core Concept**
The dental profession employs various techniques and materials for casting, a crucial step in dentistry for creating dental restorations. Inlay wax is a specific type of wax used to create wax patterns for casting, which are then used to fabricate dental restorations such as inlays, onlays, and crowns.

**Why the Correct Answer is Right**
Inlay wax is a specific type of wax that is used to create wax patterns for casting due to its unique properties. It is a thermoplastic material that can be melted and reformed multiple times, allowing it to be easily shaped and molded into the desired form. Inlay wax is also relatively soft and pliable, making it easy to carve and detail. When the wax pattern is cast, the inlay wax is replaced with a metal alloy, creating a precise and accurate dental restoration.

**Why Each Wrong Option is Incorrect**
**Option B:** Sticky wax is not used for creating wax patterns for casting, as it is too sticky and would not provide a precise and accurate mold. Instead, sticky wax is used for temporary repairs or as a release agent.
**Option C:** Modelling wax is a type of wax used for creating dental models, but it is not suitable for casting as it is too soft and would not provide a precise mold.
**Option D:** Carnuba wax is a natural wax used in various applications, but it is not used in dentistry for creating wax patterns for casting.

**Clinical Pearl / High-Yield Fact**
It's essential to note that inlay wax should be handled carefully, as it can be easily damaged or discolored. To prevent this, inlay wax should be stored in a cool, dry place and handled with clean, dry instruments.

**✓ Correct Answer: A. Inlay wax**