Teeths are hard white substances found n the mouth of humans and in many other animals and s used for mastication.Some characteristics like morphology of teeth and food habits warrants brushing of teeth in humans but it is not so in case of animals.
First we will see the adaptation in the teeth of animals, which does not necessary brushing in them. For e.g. the teeth of snake are very thin and sharp and usually curve backward. They function in capturing the prey and not in chewing, for snakes swallow their food whole. The teeth of carnivorous mammals like cats and dogs are more pointed and adapted to cutting and shearing.
The difference in shape of teeth is functional adaptations. The plant cells used as food by herbivores in cellulose cell walls. This necessitates its chewing of food in order to break down he cell walls. Although the teeth come to play, nature of the food is raw, fibrous and no sticky. So brushing is not necessary because it does not cause any probs to the dentition.
By contrast, animal cells in meat are not encased in cell walls and can act upon directly by digestive enzymes. This is the case in carnivores, where chewing is not necessary. Their teeth come to play only when cutting and shearing the prey. This reason for non brushing of teeth in animals. Humans who are omnivores have teeth somewhere between the extremes of specialisation attained by the teeth of carnivores and herbivores.
Tooth brushing in humans is mandatory because of the following reasons: modern refined diet that has ready fermentable carbohydrates which is prone to cause caries, to prevent dental caries and periodontal diseases, to aid in plaque control, to maintain good oral hygiene. Therefore the morphology of teeth in humans necessitates brushing because of soft and sticky diet consumed by modern man. It is also indicated in order to prevent the dental diseases and to maintain hygienic status.
First we will see the adaptation in the teeth of animals, which does not necessary brushing in them. For e.g. the teeth of snake are very thin and sharp and usually curve backward. They function in capturing the prey and not in chewing, for snakes swallow their food whole. The teeth of carnivorous mammals like cats and dogs are more pointed and adapted to cutting and shearing.
The difference in shape of teeth is functional adaptations. The plant cells used as food by herbivores in cellulose cell walls. This necessitates its chewing of food in order to break down he cell walls. Although the teeth come to play, nature of the food is raw, fibrous and no sticky. So brushing is not necessary because it does not cause any probs to the dentition.
By contrast, animal cells in meat are not encased in cell walls and can act upon directly by digestive enzymes. This is the case in carnivores, where chewing is not necessary. Their teeth come to play only when cutting and shearing the prey. This reason for non brushing of teeth in animals. Humans who are omnivores have teeth somewhere between the extremes of specialisation attained by the teeth of carnivores and herbivores.
Tooth brushing in humans is mandatory because of the following reasons: modern refined diet that has ready fermentable carbohydrates which is prone to cause caries, to prevent dental caries and periodontal diseases, to aid in plaque control, to maintain good oral hygiene. Therefore the morphology of teeth in humans necessitates brushing because of soft and sticky diet consumed by modern man. It is also indicated in order to prevent the dental diseases and to maintain hygienic status.
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