Part VI PRIOR APPROVAL (PATTERNS OF TREATMENT) AND SURVEYS Changes not yet applied. Later legislation changes this provision in ways not yet written into the text below: regs 28A, 28B (Pt VA) heading subst (E) by National Health Service (General Dental Services) 2001 regs 1(4), 11(a) regs 28A, 28B (Pt VI) am (Pt heading subst) (W) by National Health Service (General Dental Services) 2002 regs 1(4), 11(a) 29Prior approval — patterns of treatment 30Surveys Part VI