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Animals where this occurs include antelopes, musk-deer, camels, horses, wild boar, some apes, seals, narwhal, and walrus. [6] Male dogs have larger canines with different contour than do females. [7] Humans have the proportionately smallest male canine teeth among all anthropoids and exhibit relatively little sexual dimorphism in canine tooth size.
The canine teeth are able to withstand the tremendous lateral pressures from chewing. There is a single cusp on canines, and they resemble the prehensile teeth found in carnivorous animals. Though relatively the same, there are some minor differences between the deciduous (baby) mandibular canine and that of the permanent mandibular canine.
Dental pulp of the avulsed teeth should be removed within 2 weeks of replantation and the teeth should receive root canal therapy. [ 5 ] In addition, as recommended in all cases of dental traumas , good oral hygiene with 0.12% chlorhexidine gluconate mouthwash , a soft and cold diet, and avoidance of smoking for several days may provide a ...
There are two main theories on the aetiology of palatally impacted canines. One is the genetic theory whereby the cause is thought to be polygenic. There is a high rate of incidence of ectopic canines with dental anomalies such as pegged lateral incisors, missing lateral incisors, delayed eruption, and the absence of crowding.
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One of the factors that complicate restorative work is over-eruption of teeth as there is now a reduced height between the upper and lower arch. The prosthesis won't be able to seat fully and the patient will appear to have a premature bite or appear 'high' in ICP. Other features that result in an unstable ICP are: Drifting of teeth; Tilting of ...
Occlusal trauma; Secondary occlusal trauma on X-ray film displays two lone-standing mandibular teeth, the lower left first premolar and canine. As the remnants of a once full complement of 16 lower teeth, these two teeth have been alone in opposing the forces associated with mastication for some time, as can be evidenced by the widened PDL surrounding the premolar.
Dogs have ear mobility that allows them to rapidly pinpoint the exact location of a sound. Eighteen or more muscles can tilt, rotate, raise, or lower a dog's ear. A dog can identify a sound's location much faster than a human can, as well as hear sounds at four times the distance. [41] Dogs can lose their hearing from age or an ear infection. [42]