1. DICOM is

(A) Digital Imaging and Communication in Medicine
(B) Direct Imaging and Communication in Medicine
(C) Dental Imaging and Communication in Medicine
(D) Digital Ion in Communication in Medicine

Answer: option-A

DICOM (Digital Imaging and Communication in Medicine) is the international standard for storing, transmitting, and managing medical images and related data.

Key Features of DICOM:

• Used in radiology, dentistry, and other medical fields.
• Ensures compatibility and integration between different imaging devices.
• Facilitates the transfer of images between equipment and workstations.
• Standardizes image formats, enabling interoperability between different systems.

2. Pathognomonic sign of mandibular fracture is

(A) Buccal ecchymosis
(B) Lingual haematoma
(C) Parasthesia of lower lip
(D) Extraoral haematoma

Answer: option-B

In mandibular fractures, especially through the body or angle, the lingual periosteum tears, leading to bleeding and pooling of blood on the lingual (tongue side) of the mandible.

This results in a distinct lingual hematoma, which is rare in other conditions, making it pathognomonic for mandibular fracture.

3. If a fracture of Jaw bone is involving the dentoalveolar fragment then it is

(A) Comminuted fracture
(B) Compound fracture
(C) Simple fracture
(D) Greenstick fracture

Answer: option-B

A compound fracture (also known as an open fracture) occurs when the fracture line communicates with the external environment, such as the oral cavity or skin surface.

If the fracture involves the dentoalveolar segment, it typically means that:

• Teeth-bearing bone is fractured,
• The periodontal ligament space or tooth socket is exposed,
• And the fracture communicates with the oral cavity.

This communication with the mouth makes it a compound fracture, even if there’s no skin breach.