Dental Crowns

In case of teeth that are extensively affected by decay, with wide fillings, or of those that have been endodontically treated (having the nerve removed), the obturation (cavity filling) is no longer effective as the thin walls of the tooth don’t provide streangth anymore and there is the risk of fracture. Dental crowns are an excellent way of rehabilitating these teeth and, also, of yielding the necessary resistance.

Dental crowns are coatings which cover the tooth that has been prepared, restoring its initial shape and dimension. They cement on the naturally existent teeth and can be removed only by the professional dentist. A dental crown possesses an aesthetic role also, correcting the shape or position of the tooth on which it is applied.

Before applying a crown, the affected tooth must be treated by removing the eventual decays and by consolidating it with a cavity filling. If the nerve has been taken out some time beforehand, it’s recommended to do a retroalveolar radiography (on that precise tooth) to see how the tissue around the root has been healed. Moreover, if the tooth has got thin, weak walls it’s indicated for it to be strengthened with one or more fiberglass pivots, or with a corono-ridicular metal device (DCR), created in the lab. Once the ‘foundation’ is healthy, the next step is to cover the tooth with a crown that offers the necessary streangth for it to bear the mechanical requests to which it is permanently subjected during mastication and therefore it is protected of fracture risk.

Dental Bridges

The dental bridges treat missing teeth spaces. They functionally and aesthetically restore the missing of 1-3 teeth and they correspond to more crowns united. Marginal crowns can be attached tot the neighbour teeth , on one site and another of the edentulous space or can be assembled on two or more dental implants.

If the missing tooth is not replace, the neighbour teet have the tendency to rotate or migrate towards the empty space, with the result of an abnormal occlusion. The disequilibrium caused by the missing teeth can evolve towards gingival diseases and the dysfunction of the temporomandibular joint.

Fixed dental bridges cannot be taken out of the oral cavity, as can be done with the removable denture.

Benefits of the treatment with crowns or with dental bridges:

  • Immediate results;
  • Replace the missing teeth;
  • Improve face physiognomy;
  • Are invisible, undetectable among the other natural teeth;
  • Easy and rapid to adapt to;
  • The force of masticator muscles will be uniformly distributed on as many teeth as possible;
  • Are biocompatible and do not render allergic reactions in the case of zirconium and ceramics usage;
  • Are easy to maintain, just as natural teeth (by making use of the toothbrush, of an interdental brush and of dental floss);
  • Are resistant in time;

Types of Dental Crowns and Dental Bridges

The most utilized in the current practice are:

  • Acrylic crowns are temporary, provisional on a limited period of a few days or weeks;
  • Composite Crowns: have low streangth, are still provisional;
  • Ceramic Crowns: for a long term treatment.

The crowns can be made of porcelain (ceramics) on a metal or zirconium structure, or can be entirely ceramic.

The last generations of porcelain works on a zirconium structure or those entirely ceramic, are created to be invisible, undetectable among the other natural teeth. They are an excellent combination of endurance, biocompatibility and naturalness. They are well tolerated by the organism, do not yield allergic reactions nor colour the gum where it’s contacted by the crown (the metal gingival tattoo can appear at crowns on a metal base).

Dental crowns and bridges are individually fabricated for each patient, according to the clinical situation, the therapeutic necessities and the patient’s wishes, so as to achieve the result of a beautiful, natural smile that everybody desires.

It’s important to point out that the daily activities of patients are not affected by the temporary lack of one or more teeth until the crown is finalized, as a provisional acrylic crown is immediately fabricated.

The clinical and laboratory phases can last between 1-5 weeks, depending on complexity.

How to choose the type of dental crown?

The durability of dental crowns over time:

All types of ceramic crowns, regardless of the material they are made of, have increased streangth and do not break in case of normal mastication. There are a multitude of ceramic producing firms on the market, with varied prices, different aesthetic qualities and distinct endurance. The price of a dental crown will reflect the quality of the material used, the capability and competence of the laboratory and of the dentist.

Under the conditions of respecting the correct realization indications and techniques, the longevity of these dental works is very good.

The studies published in relevant literature claim that there is a very good longevity of these restorations, the approximate lifetime being between 8 and 12 years.

If you have got prosthetic works (crowns, bridges) you must respect a few rules, which will prolong your tooth’s life:

  • Do not break hard foods between the teeth: nut shells, bones, etc.
  • Do not open bottles or other objects with your teeth; avoid biting hard fruit and use a knife to cut them instead;
  • If you have bruxism (teeth clenching and grinding during the night) wear a mouth guard for protection;
  • Daily hygiene must be impeccable regarding both the natural teeth and the crowns. Floss every night and use interdental toothbrushes, according to what the dentist recommends;
  • Do not forget about professional cleaning (scaling, brushing, and airflow). It is recommended once every six months, or more often if needed, given your gums’ condition and given the efficiency of individual brushing.