inyathelo drill
I-step drills isetyenziselwa ukubhola iipleyiti zentsimbi ezincinci ngaphakathi kwe-3 mm.Isuntswana lokubhola elinye lingasetyenziswa endaweni yokugrumba amasuntswana amaninzi ukusetyenzwa kwemingxuma yobubanzi obahlukeneyo njengoko kufuneka, kwaye imingxuma emikhulu inokusetyenzwa ngexesha elinye ngaphandle kwesidingo sokutshintsha amasuntswana okubhola okanye imingxuma yokugrumba.yima.