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2. Effect of premature loss of deciduous molars on the anteroposterior position of maxillary first permanent molars and other maxillary teeth;Davey;J Can Dent Assoc,1966
3. The effect of early loss of primary molars on tooth eruption and space conditions: a longitudinal study;Rönnerman;Acta Odontol Scand,1977
4. DE space - a realistic measure of changes in arch morphology: space loss due to unattended caries;Northway;J Dent Res,1980
5. Effects of premature loss of deciduous molars, part I: changes in posterior arch dimensions;Northway;Angle Orthod,1984