a total of 5638 surfaces were monitored by recording probing pocket depths at the disto-buccal ( a ) , mid-buccal ( b ) , mesio-buccal ( c ) , disto-lingual ( d ) , mid-lingual and ( e ) , mesio-lingual ( f ) regions , and by examining o'leary plaque control records .
C0016327
f
C0011389
plaque