When a tooth is heavily decayed, it is likely to fracture and lose considerable tooth substance. C rowns,
also known as caps, restore damaged teeth and mimic the shape, size and colour of the surrounding teeth. Crowns are indicated for
cracked teeth, teeth with deep cavities, to protect teeth that have been root-canal treated , to provide extra support for
bridges and to cover poorly shaped or discoloured teeth.
Crowns can be made of metal, ceramic, or zirconia material. Among the variants, zirconia
crowns are the hardest and most durable crowns available. They are custom-made and fitted for each patient, depending
on the size and length of the natural teeth.
The tooth to be crowned is prepared by reducing the size of the tooth, by employing local anaesthesia.
This is done to make space for the crown that is to be fitted. An impression of the tooth is then taken to measure the exact size.
The impression is then sent to a laboratory where skilled technicians fabricate the crown. A temporary crown is fitted to avoid damages
to the natural tooth while the crown is being prepared in the lab.
A bridge is used to stabilise the bite of a patient with a missing tooth or multiple missing teeth.
Bridges prevent the surr ounding teeth from moving or shifting into an empty space formed by a missing tooth.
A missing tooth that is not repl aced may cause surrounding teeth to become unstable and require removal,
compromising oral health or change the shape of the face and diminish the beauty of a smile. Unlike partial dentures,
bridges are permanent and do not have to be removed..
The missing tooth is replaced with an artificial tooth connected between two crowns, which are
permanently cemented or bonded on the neighbouring teeth. Bridges can be used to replace a small number of missing teeth
if the neighbouring teeth are sufficiently strong. The number of missing teeth, condi tion of the neighbouring teeth,
condition of the supporting gums and bone are all important factors which are assessed prior to mak ing a bridge.
How long should dentures last?
There is no absolute lifespan for dentures. Some last up to thirty years. By this time they are quite badly worn and should
be replaced. An old worn-down denture affect the che wing comfort negatively and also changes the person’s appearance and profile from the side .
It also makes the lips to “sink together” and the risk for infections like fungi are high er. The lower denture may be the first to get loose and
require re-making or re-lining. We believe as a rule, dentures should be replaced every ten to fifteen years.
How long should dentures last?
If the dentures have become loose, food may start to accumulate underneath them as they move while eating.
If the back teeth have become rounded and worn they will not chew very efficiently.
The front teeth may become visibly worn and loose their good appearance.
If you find that using a denture lining you can buy over the counter helps to keep the lower
denture stable it may be time for a new one.
How do implant help?
Dentures can be stabilised by two or more implants placed into the underlying bone. When supported in this
way dentures do not move about or get food under them and they don’t press down and hurt the gum. Patients say that implants
i mprove their quality of life.
In North America and most European countries ex cept the UK, implant supported dentures are
considered the standard of care. Implants have an additional longer term advantage in that they prevent bon e loss which
normally occurs when the teeth are extracted. This bone loss i s more pronounced in the lower jaw which is why lower
dentures usuall y have less bony ridge to keep them stable than the upper denture.