  urlLink Medicdirect - Comprehensive UK Health Information : "Milk Teeth (Deciduous or Primary Teeth) The bones of very young children are quite soft and 'plastic'. If a child falls on to a baby tooth then, instead of breaking the tooth itself, it is often just moved in the bone and loosened. Occasionally it may be pushed up into the gum like the 2-year-old child shown in this photograph (figure 1). Usually, no treatment is required but is a sensible idea to take your child to the dentist so that your child's mouth can be checked. " urlLink This is the link to emedicine's take on tooth injury . These guys are always thick in jargon, but very thorough. Similarly thick with jargon, urlLink this is a dentist to dentist paper on treatment options for tooth injury.
Ended up being exactly what I was seeking. The page is out of the UK, published in 1999. "The proximity of the root of the primary incisor to the crown of its permanent successor means that, when a primary tooth is injured, there is significant potential for damage to the permanent successor. In many cases damage to the permanent tooth takes place at the time of injury and the ability to limit damage by some form of intervention is minor.
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