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What is a perfectly proportioned mouth?

When your teeth and bite are in proper alignment, your mouth will be well proportioned. If the bite is aligned so that your joints, muscles and teeth function in harmony, then a well-balanced face and mouth is the result you achieve. Neuromuscular dentistry has made this possible.

A perfectly proportioned mouth is one in which the teeth are not too crowded and the bite (the way your top and bottom teeth come together) is straight. Many people have crooked teeth, a misaligned bite, or both. This may be due to genetics (inherited from parents), gum disease, tumors, or using a pacifier for a long time when you were young.

If you want a perfectly proportioned mouth, your first stop is the dentist's office. He or she will examine you closely and will probably refer you to an orthodontist (a specialist who fixes crooked teeth, underbites, or overbites). Your orthodontist may recommend a retainer, braces, tooth removal, or some combination of the three, to fix your teeth and make your mouth as perfectly proportioned as possible.

Dr. Mehmet Oz, MD
Cardiology (Cardiovascular Disease)
Plastic surgeons have pored over thousands of pictures of beautiful men and women to come up with the perfectly proportioned mouth (tough work, but someone's got to do it), and this is what they've found. Rulers ready?
  • The width of the mouth should be roughly 1.6 times the width of the bottom of the nose (what a coincidence -- the golden ratio?).
  • If you drop lines down from the inner part of the colored part of your eyeballs, your mouth should fit right between those two lines.
  • Research shows that women tend to prefer upper front teeth that are rounded and men like a more square look, but it does seem that most of us prefer the height of the two front teeth to be about 1.6 times the width (golden ratio?).
  • The front six teeth also should follow the golden rule that we discussed earlier -- with the larger ones being 1.6 times the size of the each successive smaller one.
  • Your upper incisor (front) teeth should be visible below your upper lip for one to four millimeters and your lower teeth should not be visible when your lips are open. As you get older, the upper lip lengthens and you see less of your upper teeth. At the same time, your lower lip sags, exposing more of your lower teeth. When Shakespeare mentioned older people as "long in the tooth" he was describing this drop. The real reason for "long in the tooth" is periodontal disease, where the gum recedes and the bone follows. That creates triangles of space between the teeth and exposes their roots.
  • The upper lip should be slightly larger than the lower lip with a gentle curve that peaks at what's called cupid's bow. The hinge of the upper lip comes in the form of the central philtrum that separates the two sides.
  • Your upper teeth should also overlap the lower teeth by one millimeter.
  • Your jaw should be level. How can you tell? Take a double-wide Popsicle stick and bite on it. If your jaw is asymmetrical, the stick will tilt.
While there are some objective standards to beauty (and you automatically calculate those when you look at others - almost instantly even if you got a C in algebra), you can make the most of your mouth even if it doesn't measure up to these scientific standards.
YOU: Being Beautiful: The Owner's Manual to Inner and Outer Beauty

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YOU: Being Beautiful: The Owner's Manual to Inner and Outer Beauty

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.