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2. Trends in oral health status: United States, 1988-1994 and 1999-2004;Dye;Vital Health Stat 11,2007
3. The severity of malocclusion and need for orthodontic treatment in correspondence with the age;Urtane;Stomatologija,2006
4. Referring adult patients for orthodontic treatment;Buttke;J Am Dent Assoc,1999
5. Special considerations in comprehensive treatment of adults;Proffitt,1993