Canine Dental Anatomy

Refer to the canine dentition diagram. Which tooth type typically has one root in dogs?

• Incisors

• First molar

• Fourth premolar

• Third premolar

According to the diagram of canine dental anatomy, the first molar in the maxilla is most commonly characterized by how many roots?

• One root

• Two roots

• Three roots

• One to three roots

In the illustrated canine dentition, which tooth category is noted to vary between one and three roots depending on position?

• Incisors

• Canine

• Fourth premolar

• Molars (general)

Select all tooth types that the diagram indicates commonly have two roots in dogs.

• Third premolar (maxilla)

• Second premolar (maxilla)

• Fourth premolar (mandible)

• First molar (mandible)

Match each canine tooth type to its typical root count as depicted.

• Two roots

• Maxillary first molar

• One root

• Mandibular first molar

• One root

• Incisors

• Three roots

• Canine tooth

The diagram shows the fourth premolar in the upper jaw positioned just rostral to the first molar. What root configuration is associated with this fourth premolar?

• Single fused root

• Two distinct roots

• Variable between one and three roots

• Three distinct roots

Which statement best describes intraoral film placement for upper premolar radiography as shown and stated on the slide?

• Film is positioned on the lingual surface of the opposite teeth

• Film is placed under the side to be radiographed, outside the mouth

• Film is centered over the palate with the sensor perpendicular to the occlusal plane

According to the slide, what characterizes the extraoral technique for upper premolar radiography?

• Film positioned on the buccal surface of the target teeth

• Film placed extraorally under the side to be radiographed, near parallel

• Film held midline with a steep vertical angle to the maxilla

Multi-select: Based on the text and photos, which actions align with correct positioning for upper premolar radiography? Select all that apply.

• For intraoral views, place the film on the lingual surface of the opposite arch

• For extraoral views, position the film outside the mouth beneath the side being imaged

• Aim the x‑ray beam so the tube head is nearly parallel to the film in extraoral positioning

• Rotate the patient so the film crosses the midline and rests on the palate

Match each technique with its defining film placement for upper premolars.

• Film placed outside the mouth under the side to be radiographed, near parallel

• Intraoral technique

• Film on lingual surface of opposite teeth

• Extraoral technique

• Film centered over the palate crossing midline

• Incorrect positioning