For the partial denture shown, where would you place the DIRECT retainers?

Direct Retainers 2 and 15 (B) is correct. For a Kennedy Class I maxillary partial denture (bilateral posterior edentulous), direct retainers (clasps) are placed on the most posterior abutment teeth — in this case teeth #2 (maxillary right 2nd molar area) and #15 (maxillary left 2nd molar area). These clasps provide retention by engaging undercuts on the abutments.

• Options C and D describe INDIRECT retainers — these are placed ANTERIOR to the fulcrum line and resist rotation/dislodgment of the distal extension base. They are typically on anterior teeth or premolars, not called 'direct retainers.'
• Direct retainers resist displacement directly at the abutment; indirect retainers resist rotation of the denture base.