Social Heredity Playmates of the child, students of his age- group, class-fellows â¢He acquires a number of social traits from them The society around â¢The social heredity is considered to be of high significance for the progress of civilization and culture Social Environment at home Social environment of the school is all the more important.
Malocclusion (poor bite) is usually caused by problems in the shape or size of the jaw or teeth. If children have a small jaw, their teeth may grow into a space that is too small. Under these crowded conditions, teeth will push each other out of proper position. Other causes include thumb-sucking, pacifier use, and tooth loss.
Crowding is the most common type of malocclusion. In children, early crowding of permanent teeth can prevent new teeth from coming in properly or from erupting at all (impaction). Some mild types of malocclusion may improve as a child's jaw grows and changes.