12. Ultrasonic curettage- using ultrasonic devices ultrasonic vibrations disrupt ts continuity & lift off the epithelium results in a narrow band of necrotic ts ed infl n & less removal of C.T These inst’s are not as effective as hand inst’s in removing c.t. & leaving a smooth pocket wall Chemical curettage- using caustic drugs sodium sulfide alk sodium hypochlorite phenol These were discarded after studies showed their ineffectiveness The extent of ts destruction cannot be controlled They may rather than reduce the amount of ts to be removed by enzymes & phagocytes
13. HEALING: immediately after curettage, a bld clot fills the pocket area ( this is organized into granul n ts) haemorrhage in ts (dilated cap’s) & PMNL’s on wound surface rapid proliferation of granul n ts ts maturation ( smal bld vs) epithelization of sulcus takes 2-7 days CLINICAL APPEARANCE: immediately after curettage, gingiva appears hemorrhagic & bright red after 1 wk, gingiva is slightly redder than normal apical shift in position of marginal gingiva after 2wk, normal color, contour, consistency, s.t. gingival margin well adapted
