Not many people have perfectly proportioned faces and bodies, but practically anyone, at any age, can present an attractive appearance if skin is healthy-looking and glowing and hair is clean and shining. Healthy skin and hair can be achieved through good health habits, cleanliness, and personal grooming.
Hair originates in tiny sacs or follicles deep in the dermis layer of skin tissue. The part of the hair below the skin surface is the root; the part above is the shaft.
The skin is subject to a large number of disorders, most of which are not serious even though they may be temporarily uncomfortable. A disorder may be caused by one or another type of allergy; by excessive heat or cold; or by infection from fungi, bacteria, viruses, or parasites.
Although a human baby is born without teeth, a complete set of 20 deciduous, or baby, teeth (also called primary teeth) already has formed within the gums of the offspring while it still is within the mother's womb. The buds of the permanent or secondary teeth are developing even before the first baby tooth appears at around the age of six months.
It is important in the middle years of life and later to continue good oral-hygiene habits and the practice of having regular dental checkups. Studies have found that after the age of 50 more than half the people in America have periodontal disease.
If it becomes necessary to have some teeth removed, they should be replaced as soon as possible with dental implants, a bridge, or partial or full dentures.
Orthodontics is a term derived from the Greek words for straight, or normal, teeth. Straight teeth are easier to keep clean and they make chewing food more efficient.
The temporomandibular joints connect both sides of the lower jaw (mandible) to the temporal bone of the skull. Ligaments, tendons, and muscles attached to and surrounding the joints control the up-and-down and side-to-side movement of the jaw.