Midterm Flashcards
What is one major concern when positioning for a dental radiograph image?
Superimposition
What is the most common clinical sign that ends up leading to dental radiographs?
Decreased appetite
Identify the dental formulae:
Canine, deciduous, maxillary/mandibular
i3 c1 p3 (3 incisors, 1 canine, 3 pre-molars - per quadrant)
Identify the dental formulae:
Canine, permanent, maxillary
i3, c1, p4, m2
3 incisors, 1 canine, 4 pre-molars, 2 molars - per quadrant
Identify the dental formulae:
Canine, permanent, mandibular
i3, c1, p4, m3
3 incisors, 1 canine, 4 pre-molars, 3 molars - per quadrant
How many permanent teeth in total are within a dogs mouth?
42
How many deciduous teeth in total are within a dogs mouth?
28
Which maxillary teeth are single rooted? (Canine)
Incisors, canines, 1st pre-molar
Which maxillary teeth are double rooted? (Canine)
2nd and 3rd pre-molars
Which maxillary teeth are triple rooted? (Canine)
4th pre-molar, molars
Which mandibular teeth are single rooted? (Canine)
incisors, canines, 1st pre-molar, 3rd molar
Which mandiblar teeth are double rooted? (Canine)
2nd and 3rd pre-molar, 4th pre-molar, 1st and 2nd molar
Which mandibular teeth are triple rooted? (Canine)
None
Identify the dental formulae:
Feline, deciduous, maxillary
i3, c1, p3 (3 incisor, 1 canine, 3 pre-molars - per quadrant)
Identify the dental formulae:
Feline, deciduous, mandibular
i3, c1, p2 (3 incisor, 1 canine, 2 pre-molars - per quadrant)
Identify the dental formulae:
Feline, permanent, maxillary
i3, c1, p3, m1 (3 incisor, 3 pre-molars, 1 molar - per quadrant)
Identify the dental formulae:
Feline, permanent, mandibular
i3, c1, p2, m1 (3 incisors, 1 canine, 2 pre-molar, 1 molar - per quadrant)
How many total deciduous teeth are in the mouth of a feline?
26
How many total permanent teeth are in the mouth of a feline?
30
Which maxillary teeth are single rooted? (Feline)
incisors, canines, 2nd premolar
Which maxillary teeth are double rooted? (Feline)
3rd pre-molar
Which maxillary teeth are triple rooted? (Feline)
4th premolar, 1st molar has 1-3 roots
Name 3 reasons when a radiograph should be taken (There is 7)
- mobile tooth
- gingiva bleeds without probing
- fracture/discolouration
- periodontal disease
- missing teeth without explanation
- resorptive lesions
- before an extraction
What is the technique we use in order to avoid elongation/foreshortening of teeth?
Bisecting Angle
How do we find the Bisecting angle?
Find the slope of the tooth: from crown to root. This creates an angle between this line and the line of the film. The bisecting angle is the midline between these two lines (cutting the angle in half). The beam is placed perpendicular to this angle
Foreshortening of a tooth means the beam is placed too ______ (high or low)
high
Elongation of a tooth means the beam is placed too _____ (high or low)
low
For which teeth do we use the bisecting angle?
Canine, incisors, all maxillary teeth
The bump on the film should always be positioned how?
Facing the tube head and facing up
What are the 5 densities of a radiograph?
gas, fluid, soft tissue, bone, stones/metal
When performing a full mouth jaw view, what views are used for the maxilla?
- DV Intraoral view (occlusal, pet biting down) 2. Open Mouth Left VD Oblique (Extra Oral 3. Open Mouth Right VD Oblique (Extra Oral)
When performing a full mouth jaw view, what views are used for the mandible?
- VD Intraoral occlusal
- Open mouth Left DV Oblique (Extra Oral)
- Open mouth Right DV Oblique (Extra Oral)
How is the patient positioned for the following teeth:
Mandibular pre-molar and molars
Lateral recumbency with the side to be imaged up
How is the patient positioned for the following teeth:
Maxillary teeth
Sternal recumbency
How is the patient positioned for the following teeth:
Mandibular canine and incisor
Dorsal recumbency
How is the patient positioned for the following teeth:
Maxillary 4th pre-molars (Cats)
Lateral, affected side down, place film under cat (not in mouth), planes of mouth should be parallel to film
What does the SLOB rule stand for? How do you use it?
Same Lingual, Opposite Buccal. The technique is used so that 3-rooted teeth do not have super-imposition of the roots. If you angle the tubehead slightly rostrally or caudally, you can see all 3. If you move rostrally, the same side you moved to, that root is the Lingual root. The opposite side to which you moved is the Buccal root.
