The short answer
This guide holds 12 original practice questions on veterinary dentistry for credentialed technician exam preparation. Each question comes with an answer and a short rationale. The questions cover modified Triadan tooth numbering, dental anatomy and surface terms, dental instruments, periodontal disease staging, tooth fracture and mobility classification, and intraoral radiography technique. Our desk wrote every question from the published sources cited below. None of them is a real exam item, and none is drawn from any exam owner's sample or practice material.
Key takeaways
- In the modified Triadan system, each tooth gets a three-digit number, and the first digit identifies the quadrant, according to the Ohio State University (OSU) charting chapter [3].
- The OSU chapter gives dogs 42 teeth and cats 30, and it states that tooth 04 is always the canine and tooth 09 is always the first molar [3].
- The American Veterinary Dental College (AVDC) defines periodontal disease stage 1 as "Gingivitis only without attachment loss" and stage 3 as 25 to 50% attachment loss [2].
- The OSU instrumentation chapter describes curettes as "the only instrument to be used subgingivally," with scalers limited to work above the gingiva [5].
- In the bisecting angle radiography technique, the beam is aimed perpendicular to an imaginary line that bisects the planes of the tooth and the sensor, according to technician author Mary L. Berg [7].
- Gingivitis is reversible, while periodontitis brings bone loss that is considered irreversible, per Today's Veterinary Nurse author Lara Arbach [8].
About these questionsPractice questions written by our editorial team for study purposes. These are not real VTNE items and are not affiliated with AAVSB.
Dentistry and the VTNE content outline
The American Association of Veterinary State Boards (AAVSB) publishes a VTNE content outline that it calls "one of the most important materials to review before taking the VTNE" [1]. The AAVSB says the exam spans 10 domain areas and that its online practice tests report results across those same 10 domains [1]. It sells three versions of the practice test at $50 USD per attempt, each with 75 questions and a 90-minute limit, and states that the practice-test questions are copyrighted and may not be memorized or copied [1]. The fetched AAVSB page does not list the domain names or the share of the exam given to dentistry, so this guide does not state them.
Tooth numbering and dental anatomy
Question 1
In the modified Triadan system, which part of the mouth holds teeth numbered in the 300s?
- A. Right maxillary quadrant
- B. Left maxillary quadrant
- C. Left mandibular quadrant
- D. Right mandibular quadrant
Answer: C. The OSU charting chapter assigns 100 to the right maxilla, 200 to the left maxilla, 300 to the left mandible and 400 to the right mandible [3].
Question 2
A technician is charting a fracture on a dog's upper left canine tooth. Which modified Triadan number identifies that tooth?
- A. 204
- B. 104
- C. 304
- D. 209
Answer: A. According to the OSU chapter, the 200 quadrant is the left maxilla and position 04 is always the canine, which gives 204; 104 is the right maxillary canine and 209 is a first molar [3].
Question 3
According to the published feline dental formula, how many permanent teeth does an adult cat have?
Answer: B. The OSU chapter states that cats have 30 teeth, 12 fewer than the 42 it gives for dogs [3].
Question 4
A charting note must describe a lesion on the side of a mandibular premolar that faces the tongue. Which surface term applies?
- A. Buccal
- B. Palatal
- C. Labial
- D. Lingual
Answer: D. The AVDC defines the lingual surface as the side of a mandibular or maxillary tooth facing the tongue and notes that "palatal" can also be used for the lingual surface of maxillary teeth [2]. The OSU anatomy chapter likewise ties buccal to the cheek and labial to the lip [4].
Instruments and the cleaning procedure
Question 5
A technician needs to remove calculus from below the gingival margin with a hand instrument. Which instrument suits that task?
- A. Hand scaler
- B. Curette
- C. Calculus removal forceps
- D. Periosteal elevator
Answer: B. The OSU instrumentation chapter states that curettes work above and below the gingiva and that scalers are for supragingival use only, since subgingival use may injure the gingiva and periodontal ligament [5]. Benita Altier, writing in Today's Veterinary Nurse, lists two to three curettes sized to root surfaces in the CORE (comprehensive oral and radiology evaluation) dental pack [6].
Question 6
During charting, a Shepherd's hook is run along each crown. What is this instrument mainly used to find?
- A. The depth of the gingival pocket
- B. Large chunks of calculus for quick removal
- C. Surface irregularities such as caries and exposed pulp
- D. The plane between periosteum and alveolar bone
Answer: C. The OSU chapter names the Shepherd's hook as the most common explorer and says explorers detect plaque and calculus, find caries and check for exposed pulp, while the periodontal probe measures pocket depth [5].
Question 7
Which statement describes the intended use of a luxator during an extraction?
- A. It grasps the loosened tooth and lifts it from the socket.
- B. It applies twisting leverage to rotate the tooth.
- C. It measures how far a probe passes under the crown.
- D. It is slid into the periodontal space to cut the periodontal ligament.
Answer: D. The OSU chapter describes the luxator's thin, sharp tip as being inserted into the periodontal space to sever the ligament, and it warns that the tip is too thin for twisting leverage; extraction forceps grasp and remove the tooth [5].
Periodontal disease, fractures and mobility
Question 8
A tooth has inflamed gingiva, but probing and radiographs show no attachment loss and a normal alveolar margin. Which AVDC periodontal disease stage applies?
- A. PD0
- B. PD1
- C. PD2
- D. PD4
Answer: B. The AVDC defines PD1 as "Gingivitis only without attachment loss," with normal height and architecture of the alveolar margin; PD0 has no clinically evident gingivitis, and PD2 begins with less than 25% attachment loss [2].
Question 9
Part of a dog's crown has broken away, exposing dentin, but the pulp remains covered and the root is not involved. Which AVDC classification fits?
- A. Uncomplicated crown fracture (T/FX/UCF)
- B. Complicated crown fracture (T/FX/CCF)
- C. Root fracture (T/FX/RF)
- D. Enamel infraction (T/FX/EI)
Answer: A. The AVDC defines an uncomplicated crown fracture as a crown fracture "that does not expose the pulp," a complicated crown fracture as one that does, and an enamel infraction as a crack with no loss of tooth substance [2].
Question 10
A premolar moves 0.8 mm in a non-axial direction and cannot be depressed into its socket. Which AVDC mobility stage applies?
Answer: C. In the AVDC tooth mobility index, M2 covers non-axial movement of more than 0.5 mm and up to 1.0 mm, while M3 requires more than 1.0 mm or any axial movement [2]. The Merck Veterinary Manual restates the same scale [9].
Dental radiography
Question 11
When the bisecting angle technique is used, where is the x-ray beam directed?
- A. Perpendicular to an imaginary line bisecting the angle between the tooth plane and the sensor plane
- B. Parallel to the sensor surface
- C. Perpendicular to a sensor placed parallel to the tooth
- D. Along the long axis of the tooth root
Answer: A. Berg describes aiming the beam at the imaginary line that bisects the planes of the tooth and the sensor, and she reserves the parallel technique, with the cone perpendicular to a sensor parallel to the jaw, for the posterior mandibular molars [7].
Question 12
A radiograph of a dog's maxillary premolars shows roots that appear longer than they are in the mouth. Which cone adjustment does Berg describe for this error?
- A. Decrease the cone angle
- B. Move the patient to dorsal recumbency
- C. Switch every maxillary view to the parallel technique
- D. Increase the cone angle
Answer: D. Berg writes that elongated roots mean the tube head angle is too low and that "if the tooth roots are too long, increase the angle of the cone"; she positions patients in sternal recumbency for maxillary views [7].
