There are a whole lot of aspects to this case of broken teeth caused by an accident. First of all, if an entire tooth has fallen out, then it is possible to put it back in the socket (this is called re-implantation) depending on whether it has been preserved properly and within how much time the procedure is done. It is not possible to reimplant it if it is after a many-hours' gap. Reimplantation does not arise if the tooth is broken. You cannot stick back part of a tooth on the broken section which is remaining in the mouth.
What you have to consider are the options, these depending totally on the condition of the various broken teeth. That is to say, what is the type of broken state has to be seen individually for each tooth. So, let's say, there is just a chip or a slight crack on a tooth. This can simply be filed (smoothened out). The type of chip or crack may also decide whether filling material has to be put in as a preventive measure to keep the crack from becoming bigger.
Next, consider a tooth where the top has got broken. This is called the crown of the tooth and plays a major role in our eating process as that is what is required for proper chewing of food. Such a tooth will need a filling called an onlay and the dentist will let you know of the various materials used for it (example acrylic).
Then there are teeth which may have been so badly affected that the very nerve of the tooth sends a shooting pain and even cause bleeding. This requires more serious treatment which will likely involve root canal treatment.
Finally, consider the case where a broken tooth is so badly damaged that it requires to be removed entirely and an artificial tooth be implanted in its place. You can inquire, then, from your Dentist about partial dentures that are supported by the adjacent teeth if those are in good condition.
As for costs, any kind of dental treatment nowadays is very expensive. You could mention which town/city you are based and somebody may recommend a good Dentist to you, but ensure that you do not go to quacks or those who are not really having proper expertise in dealing with broken teeth. It would be best to go to a Dentist referred to you by somebody who really knows the Dentist's work.
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