The curve of the teeth should follow the natural curve of the lower lip

The Spaces Between the edges of the teeth should progressively have more acute angles

The contact points between each tooth become higher as the teeth progress to the posterior (back) areas of the mouth.

For optimum aesthetics all the teeth should incline towards the midline. The midline should always be straight

The Front teeth (centrals) are the longest with the adjacent laterals shorter.Beside the laterals are the cuspids, which should be as long as the centrals.Then the cuspids, bicuspids and molars all get progressively shorter.

The position of the gumlines should be symmetrical and similar to that shown above

Most beautiful smiles follow a basic rule of proportion. The front central incisors are the widest, followed in diminishing proportions by the adjacent teeth. Teeth that are proportionally too wide will distort the harmony of the smile.