**Core Concept**
The dolicocephalic facial pattern is characterized by a long and narrow skull shape, which is often associated with specific dental and skeletal features. This facial pattern is part of the broader categorization of facial morphology, which is essential in orthodontics and dental diagnosis.

**Why the Correct Answer is Right**
The dolicocephalic facial pattern is typically associated with a long and narrow dental arch due to the corresponding shape of the jaw and facial bones. This is because the dolicocephalic skull has a longer anterior-posterior dimension and a narrower transverse dimension, which influences the development of the dental arch. As a result, the dental arch in individuals with a dolicocephalic facial pattern tends to be longer and narrower than in those with other facial patterns.

**Why Each Wrong Option is Incorrect**
**Option A:** A broad dental arch is typically associated with a brachycephalic or mesocephalic facial pattern, not dolicocephalic. This is because brachycephalic and mesocephalic skulls have a shorter anterior-posterior dimension and a wider transverse dimension, leading to a broader dental arch.
**Option C:** A paraboloid dental arch is not a commonly used term in dental morphology, and it does not accurately describe the dental arch shape associated with the dolicocephalic facial pattern. While there may be some variation in dental arch shape, the dolicocephalic pattern is specifically characterized by a long and narrow dental arch.
**Option D:** A square dental arch is not a characteristic feature of the dolicocephalic facial pattern. The dolicocephalic dental arch is typically longer and narrower, not square.

**Clinical Pearl / High-Yield Fact**
It's essential to remember that facial morphology can influence dental development and orthodontic treatment outcomes. Recognizing the characteristic features of different facial patterns, including dolicocephalic, can help dentists and orthodontists provide more effective treatment plans.

**✓ Correct Answer: B. Long and narrow dental arch**