1. Infraocclusion of primary molars: an epidemiological, familial, longitudinal clinical and histological study;Kurol;Swed Dent J Suppl,1984
2. Incidence and distribution of deciduous molar ankylosis: a longitudinal study;Silvestrini Biavati;Eur J Paediatr Dent,2011
3. Ankylosed primary molars: results and treatment recommendations from an eight-year longitudinal study;Messer;Pediatr Dent,1980
4. Etiology and treatment of tooth ankylosis;Biederman;Am J Orthod,1962
5. The effect of extraction of infraoccluded deciduous molars: a longitudinal study;Kurol;Am J Orthod,1985