Third molars generally erupt between the ages of 18 and 24 years, although there is wide variation in eruption dates. One or more third molars are absent in approximately 25% of adults but they may still be present in the elderly, otherwise edentulous, patient. The prevalence of unerupted third molars varies widely and is influenced by age, gender and ethnicity. The failure of eruption of third molars is a very common condition and the extraction of impacted third molar teeth is one of the most frequent surgical procedures carried out in the NHS. It has been reported that a significant proportion of those on oral and maxillofacial surgery waiting lists are awaiting third molar removal.
Note:- This guideline is now 14 years old!
A National Institute for Health and Care Excellence (NICE) technology appraisal was also published in the same year,