Avulsion is a traumatic injury which results in loss of the tooth from the alveolus, while reimplantation is the technique of reinserting an avulsed tooth into the alveolus or tooth socket after its loss.
The success of reimplantation depends on many factors among which are the time lapse before the tooth is reimplanted in the socket and the storage medium of the avulsed tooth.
Other factors which may affect the success of reimplantation include the condition of the tooth, particularly the periodontal ligament tissue remaining on the root surface, sex, age, type of tooth reimplanted, stage of root formation, type of cleansing procedure following contamination of the root surface, duration of splinting, and the use of antibiotics.
With favorable conditions such as the periodontal ligament remaining on the root surface, the tooth stored in adequate storage medium for not more than 60 minutes, and immediate reimplantation after the accident, the tooth may be retained for as long as 5 to 10 years and few for a lifetime, but some fail soon after reimplantation.
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Unfavorable conditions include teeth out of the mouth for more than 6 hours in no storage media and without periodontal ligament on the root surface.
In such cases, the reimplanted tooth fails with subsequent loss of the tooth.
This is because dry storage affects pulp revascularization and survival of the periodontal ligament cells along the root surface resulting in either replacement resorption or loss of the tooth.
Nigerian Journal of Clinical Practice
IN Ize-Iyamu, BDO Saheeb