Ukusika ngokwesiko kukusebenzisa imela enomphetho obukhali ukucinezela izinto ezisikwayo. Olu xinzelelo lugxininiswe emphethweni we-blade, uxinzelelo lukhulu kunamandla okucheba kwezinto ezisikwayo, ibhondi ye-molecular ye-material ikhutshwe, kwaye inqunywe. Ekubeni izinto eziphathekayo zitsalwa ngokunyanzeliswa, umgca wokusika wesixhobo sokusika kufuneka ube bukhali, kwaye izinto ngokwazo kufuneka zibe phantsi koxinzelelo oluphezulu. Isiphumo sokusika asilungile kwizinto ezithambileyo kunye ne-elastic, kodwa kunzima kwizinto ezinamathele
Xa kuthelekiswa nemimese yokusika ukutya kwendabuko, abasiki bezonka be-ultrasonic abafuni imiphetho ebukhali, kwaye abafuni uxinzelelo oluninzi, kwaye ukutya akukonakali. Ngexesha elifanayo, ngenxa yokuba i-blade yokusika yenza i-vibration ye-ultrasonic, ukuxhatshazwa kwe-friction kuncinci, kwaye izinto eziza kunqunyulwa akulula ukunamathela kwi-blade. Esi sibini sezinto ezincangathi kunye ne-elastic, izinto ezikhenkcezisiweyo, ezifana nekeyiki yekhrimu, i-ayisikrimu, njl.
