Dental INLAY or ONLAY ?
It is interesting that inlays have always been a decorative technique. They are used in wood, stone, and jewellery. This is also true in dentistry where a solid filling is placed in the biting surface of a tooth. Whether it is porcelain or composite, inlays in dentistry take a designers eye when tooth restoration takes place. An onlay is distinguished from an inlay in that it involves the outer surface of a tooth as well as the biting surface.
What is the difference between an inlay and an onlay?
Dental inlays and onlays are similar tooth restorations in that both are custom made in a dental lab from dental porcelain or composite resin material. The difference between the two actually lies within the structure of your tooth. Most of the time inlays and onlays are designed to repair decay or damage to a molar. These teeth have cusps, the bumpy parts on the chewing surface of each molar. Inlays are designed to fit within the cusps and lie on the chewing surface. On the other hand, onlays extend beyond the chewing surface and over the cusps. Dr. Kaviani will be able to determine whether an inlay or an onlay is best for you.
What You Should Know about Cosmetic Inlays Onlays
GOLD : gold doesn't stain the teeth and has a longer life expectancy than silver. It can be placed into upper back teeth where it doesn't show , however it shouldn't be placed opposite porcelain inlay onlays as porcelain tends to wear gold rapidly during chewing.
PORCELAIN: Research shows bonded porcelain inlay onlays can equal the strength of natural teeth, making them particularly attractive choices when aesthetics and strength are required, however extra stress can fracture porcelain just as it can natural teeth.
COMPOSITE: Although not as long standing as gold or porcelain, composite resin inlays onlays are a cosmetic option. silver and gold restorations can show when you speak and smile widely. This difference can easily be seen when old restorations are replaced with composite inlays onlays on one side of the mouth.