Wisdom teeth arrive last and often into a jaw that has no room left for them. When they come in at an angle, or only partly, they can damage the tooth in front and leave a flap of gum that traps food and infects repeatedly.
Not every wisdom tooth needs removing. Plenty come through cleanly and stay put for life. The ones that cause trouble usually announce it, and an X-ray shows which way yours are heading well before that.
Why wisdom teeth cause the trouble they do
They are the last teeth to arrive, typically between seventeen and twenty-five, into a jaw that finished growing some years earlier. Where there is room, they come through, meet the tooth above, and behave like any other molar. Where there is not, they push against the tooth in front, come through at an angle, or stop halfway and stay there.
The eruption of wisdom teeth can be painful and uncomfortable, and removal is often what relieves it and prevents further damage. We carry out extractions here rather than referring them elsewhere, whether the reason is non-restorable decay, a wisdom tooth angled into the tooth beside it, or extractions needed ahead of orthodontic treatment.
- Impacted
- Blocked from coming through fully, by bone or by the tooth in front. It can be angled forwards, backwards, sideways or lie flat, and which of those it is changes how straightforward removal will be.
- Partially erupted
- Through the gum but not fully. The worst of both worlds: impossible to clean and covered by a flap of gum that traps food.
- Pericoronitis
- Infection of that gum flap. Swollen, sore, sometimes making it hard to open the mouth. It settles with treatment and it recurs, which is often the deciding argument for removal.
- Distal caries
- Decay on the back surface of the second molar, caused by the wisdom tooth pressing against it and making that surface impossible to clean. The tooth that gets damaged is the healthy one in front.
