Which is the restoration of choice in a patient having moderate carious lesion with heavy occlusal forces?
**Core Concept**
Dental restorations are chosen based on the extent of tooth decay, the location of the decay, and the patient's oral habits. In cases of moderate carious lesions, the restoration should be durable enough to withstand heavy occlusal forces while also allowing for minimal tooth preparation.
**Why the Correct Answer is Right**
In patients with moderate carious lesions and heavy occlusal forces, **inlays** are the restoration of choice. Inlays are made outside the mouth and then cemented into place, allowing for a strong and durable restoration that can withstand heavy forces. This is because inlays require less tooth preparation compared to onlays or crowns, which makes them ideal for patients with moderate carious lesions.
**Why Each Wrong Option is Incorrect**
* **Option A:** Onlays are often used for more extensive decay or when the cusps of the tooth are affected. They are more invasive than inlays and require more tooth preparation.
* **Option B:** Crowns are typically used for teeth that have significant decay, cracks, or fractures. They cover the entire tooth and are often more invasive than inlays.
* **Option C:** Composite fillings are often used for small to moderate carious lesions but may not be suitable for patients with heavy occlusal forces as they can be prone to wear and tear.
**Clinical Pearl / High-Yield Fact**
In patients with heavy occlusal forces, it's essential to choose a restoration that is durable and minimally invasive to prevent further tooth damage.
**Correct Answer:** C. Composite fillings.