What are inlays and onlays?

Question

I've got cavities in my teeth and my dentist says he can't do normal fillings in them and he was talking about inlays and onlays and I don't know what he's talking about.

Why can't he do fillings in my teeth? And what are inlays and onlays anyway and what happens if I need them?

Answer 1

to me? they are gimmick my colleages use to generate more income, in the higher income zip codes. I've been practicing 5 years, I have placed 3 inlays; 2 of which have failed. I've replaced more than 10 placed at other offices. They make more money for me, but why do an inlay or onlay when a filling or crown will do? It's something we learned in school, but in practice on real people I don't have the heart to waste their time like that. Some of my best patients run to our office from Dr's who CAN'T do a filling. Be carefull when a dentist says he CAN't do something on multiple teeth. There is a time and an indication for everytype of filling, but when a dentist reccomends inlays, onlays, & crowns for everything. You are probably at a "cosmetic dentist" were looks are generally more important than longevity. Cosmetic dentistry is not for everyone, you need to have the income to keep it going. chances are if your asking that question here, you should find a 'traditional dentist'.

Answer 2

Hello I got this info from the bupa website

http://hcd2.bupa.co.uk/fact_sheets/html/teeth_restoring.html

Inlays and onlays

Inlays and onlays are similar to fillings. However, like crowns, they are made in a laboratory and then glued to the tooth with special adhesive. This process requires two visits to the dentist.

During the first visit, the dentist removes the old filling or decay and makes a mould of the tooth in a putty-like material. A temporary filling is placed to protect the tooth while the laboratory uses the mould to make the inlay or onlay. On the second visit, the temporary filling is removed and the inlay or onlay glued in place.

Inlays and onlays are very strong and, in some circumstances, may be more durable than ordinary fillings. They are suitable for the grinding surfaces of the molar teeth and can be made out of gold, porcelain or composite material.

Help this helps good luck :-)

Answer 3

dre talked about how often he has seen inlays that have failed. If they are placed properly (and if dre's have failed as often as he claims he should go back and re-learn how to place them), they are much better for the tooth than fillings. Traditional fillings are prepped so the filling material can be "wedged" into the tooth. The doctor then fills the hole with (sorry for such a crude term) with a "packing material." This places pressure on the walls of the tooth structure that can lead to the filling failing or the tooth cracking.

Onlays are prepped and then a mold is taken of the hole in the tooth. The lab or Cerec machine then makes a filling that fits exactly in the prepped hole. The onlay/inlay is then bonded to the tooth. The fact that the onlay/inlay fits the tooth perfectly makes the tooth stronger. This drastically reduces the filling's chance for failure, and also helps to keep the tooth from cracking, lessening your chance for a future root canal and crown.

If you have a lot of decay in the tooth, the onlay/inlay allows you to have a stronger restoration (then a regular filling) without having to go to a crown, which takes away more of your tooth structure (which is never a good thing, your natural tooth is always better than anything prosthetic).

Answer 4

in·lay (nl, n-l)
tr.v. in·laid (-ld), in·lay·ing, in·lays
1.
a. To set (pieces of wood or ivory, for example) into a surface, usually at the same level, to form a design.
b. To decorate by setting in such designs.
2. To insert (a photograph, for example) within a mat in a book.
n.
1.
a. Contrasting material set into a surface in pieces to form a design.
b. A design, pattern, or decoration made by inlaying.
2. Dentistry A solid filling, as of gold or porcelain, fitted to a cavity in a tooth and cemented into place.



cosmetic dentistry: tooth inlays and onlays

To repair larger areas of tooth damage or decay, inlays and onlays are sometimes preferred over dental fillings because they will increase the strength of the tooth. Inlays fit inside of the tooth, while onlays cover more of the tooth's outer surface.

The restorations that can be made of gold, porcelain or resin. They are custom made in a laboratory like a crown, but involve the removal of less tooth structure. These restorations are being used more often today to restore teeth to their natural state.

the procedure: It takes two or more appointments to make an inlay or onlay. At the first appointment, your tooth will be numbed so that you are comfortable and don't feel any pain. Then the tooth is shaped with the dental drill to precise proportions. An impression is then taken to make a working stone model for the dental laboratory.

During the time that the laboratory is creating your new restoration, you will have a temporary restoration in your mouth. At the next appointment, the temporary is removed, and the new restoration is tried on to make sure it fits well.

Your cosmetic dentist will check your bite, make sure you can floss adequately, and check to be sure that the color is a good match to adjacent teeth. If everything is correct, your cosmetic dentist will bond or cement your new inlay or onlay in place.

results: Inlays and onlays can last for 10 to 20 years or more

Answer 5

An inlay or onlay is a restoration that is made outside your mouth and then cemented into place. It has inherent strength of its own and does not rely on the strength of the tooth for its own survival. An onlay is just an inlay that has extensions to cover some of the cusps of the tooth for more strength.

You would get very different answers from dentists on this subject. Some call inlays/onlays "an island of gold in a sea of cement" and others call them the finest restoration modern dentistry has to offer. See dre and Johntara, for instance.

My dad was a dentist and I have a mouth full of inlays. I have several patients of his still in the practice who have multiple gold inlays in their mouth. I can say that they will serve well, probably for the duration of their lives. However, I think the last gold inlay I did was about 10 years ago and the one before that was another 10 years ago. The last one was for an assistant who just wanted one so she could have one. I would have otherwise used a "regular" white filling. I guess I have only done about 40-50 inlays ever. As far as I know, they are mostly still in place, but I am no longer a fan of doing them. This may be linked to my decision to stop doing my own castings. There's nothing worse than "trying to make it fit" with an inlay. My "own" seemed to fit just the way I wanted them to fit. It's just that I decided to have a life outside of the dental office. (Haha - and look how I spend my free time now!)

I am not opposed to inlays, but I HAVE seen them fail. When they do fail, the patient will always need a crown and usually need a root canal. Stuff (decay) can happen under an inlay and go undetected for a long, long time. I am quite comfortable doing a full crown if I think the patient ~might~ be served by an inlay. There are technical reasons why it is difficult to an inlay (Dentists: requirement of expansion in margin area vs. contraction of internal surfaces, for instance...) and I decided that I would rather deal with the marginal fit of a crown then an inlay, which has "margins running all over the place."

Having said all that, an inlay can obviously serve you very well, if it is truly indicated and if it is done to absolute perfection. By "absolutel prefection," I mean nothing less than ABSOLUTE PERFECTION. I like crowns better.

I must add that I do agree with dre in some respects. Some dentists are jumping on a bandwagon that I do not like by telling patients that they need inlays when they really don't. It's a money-maker. Fees are MUCH higher than they are for regular fillings. All insurance plans will allow much higher payment for inlays and some of them require little or no additional time spent in the chair to get them done. There is nothing easier than buzzing out a quadrant of teeth for inlays, taking an impression and then having the lab worry about getting everything right. You can "fix" 3 or 4 teeth with inlays in much less time than you would take to do fillings in those same teeth. I would hope that any dentist who does this is really meticulous about his cementation, though, instead of rushing that part of the job as well. I have replaced literally dozens of inlays done in another office in town after they have been in place for less than a couple of years.

If you get inlays, do NOT ever get a "composite" inlay. They wear out sometime before tomorrow, in my opinion, and then the teeth they were supposed to be protecting end up breaking. Porcelain or Cerec are okay, but gold is literally the "gold standard" for inlays in my book. Poorly done porcelain or Cerec inlays crack almost invisibly and then you get decay under them through the crack and it is almost undetectable until you experience pain. Gold is the most biocompatible material we have as far as wearing at the same rate as the opposing tooth.

If you are blessed with a dentist who is very good at doing inlays and only does them where they are the best choice, it is a wonderful service. How would you know, though?

Sorry to create so much confusion, but as you can see, this is a hot topic among dentists.

Answer 6

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Answer 7

Fixed prosthodontics. There are 2 categories of prosthodontics - fixed and removable. Fixed deals with crowns, onlays, inlays, etc, while removable deals with dentures and partials.

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Answer 10

depends, on how much tooth structure is decayed...all decay must be removed...inlays are preps within the tooth not encroaching in between the teeth...onlays prep the biting service of the tooth...if too much tooth is decayed a root canal and crown prep would be needed.