2019 Soltero-Rivera M et al, Fracture Limits of maxillary 4th Premolar teeth in domestic dogs under applied forces Flashcards
Frontier AR involved
Prevalence of tooth fracture in dogs
tooth fracture in maxillofacial trauma in dogs
20-27%
67-85%
3 layers of enamel in cat and dog
surface - non prismatic layer
regular prismatic layer
inner layer - has prominent bands Hunter- Schreger bands - which may indicate multidirectional orientation of rods
Hunter - Schreger bands are not true structure but optical illusion produced by changes in direction between groups of rods
What biting force dogs can voluntarily generate?
12 to 1394N and directional proportional to size
Does the bite force is proportional to dog size?
Yes, it is
What is the maximum pulling force all 4 canines teeth can generate ?
480 to 1200 N
To stimulate chewing under anesthesia that maximum potential bite for for dogs
> 3400 N at molar teeth
with all 4 canine teeth involved - what is the maximum pulling force ?
480 to 1200 N
stimulate the chewing under GA , what is the maximum potential bite force in dogs
> 3400 N
Most common 4th maxillary PM fracture
1) CCF 2) CRF
What is the force range on canine teeth to fracture it ?
What does the fracture depend on?
495 to 630 N
depends on canine tooth height to diameter ratio
A lower or higher crown height to diameter ratio has been found to increase fracture resistance of canine tooth that have undergone endodontic or prosthodontic therapy ?
A lower crown height to diameter has been found to increase fracture resistance of canine tooth
A rigid material that fails to break below a certain force could fracture the 4th maxillary premolar . What is the force?
<1281N - anything above this force could break the tooth
explain the sharp pain elicited from a tooth
- 90% of A fiber in dental pulp tissue in human teeth are A delta fibers –> located in pulp dentin border in coronal part of the pulp and concentrated in pulp horns-> transmit directly to thalamus –> generate a sharp pain
