1. Root resorption during Begg treatment: A longitudinal roentgenologic study;Goldson;Am. J. Orthod.,1975
2. Upper incisor root resorption during Stage II of the Begg technique: Two case reports;Hall;Br. J. Orthod.,1978
3. The effect of antero-posterior incisor repositioning on the palatal cortex, as studied with laminagraphy;Ten Hoeve;J. Clin. Orthod.,1976
4. A study of root resorption in treated Class II, Division 1 malocclusions;De Shields;Angle Orthod.,1969
5. Estudio radiográfico del paralelismo radicular en casos de extración terapéutica;Amador,1979