Bone graft or bone regeneration is necessary when there is not enough quality and quantity of bone material surrounding either the implant area or that of the surviving roots. Bone loss occurs naturally over time and is the reason why implants should be placed very soon after extraction.
What can cause bone loss?
Whenever a tooth is lost or extracted, a considerable amount of the bone, that once surrounded the remaining root, may disappear. This loss can be particularly rapid during the first few months and is described as ‘bone resorption’.
Although, the rate and amount of bone resorption is highly variable between individuals, it will always occur to some extent, unless specific care is taken to reduce its effects. Sometimes, the simplest measure to minimise bone loss after an extraction is to place the implant immediately (if there is no infection) or within the first few weeks.
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