1. An orthopantomographic study of prevalence of impacted teeth;Aitasalo;Int J Oral Surg,1972
2. Epidemiology of third molar impactions;Andreasen,1997
3. Begg Othodontic Theory and Technique;Begg,1956
4. A radiological study of the frequency and distribution of impacted teeth;Brown;J Dent Assoc S Afr,1982
5. A survey of 3,874 routine full-mouth radiographs: 11. A study of impacted teeth;Dachi;J Oral Maxillofac Surg,1961