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3. [Problems of extraction in Angle's Class 1 malocclusions]. Pettenella L, Scotti S. Mondo Odontostomatol; 1969; 11(2):200-3. PubMed ID: 5255411 [No Abstract] [Full Text] [Related]
4. [The first permanent molar. 3. Therapeutic aspects of first molar extraction]. McEwen JD, Burke PH. Orthod Fr; 1969; 40():29-98. PubMed ID: 5269730 [No Abstract] [Full Text] [Related]
17. [Removal of deciduous teeth in the management of early orthodontic treatment]. Ziólkiewicz T. Czas Stomatol; 1970 Apr 15; 23(4):349-53. PubMed ID: 5268214 [No Abstract] [Full Text] [Related]