Ezi zizikhonkwane ezibini ze-enamel eqinile, zisebenzisa ubugcisa obucacileyo kunye nokushicilela isikrini.
Izikhonkwane ze-enamel ezilukhuni eziqhelekileyo zithandwa ngabayili bepini beengcali. Kwi-enamel eqinile, sizalisa imibala ye-enameli ukuya kumda wentsimbi kwaye emva koko upholise umcaba we-enamel ukuze ugqibezele kwaye umenyezelo. Ziyesibini isitayile esidumileyo sephini esinikezela ngalo, emva kwePin ye-Enamel yeSiko. Zijongwa njengezona ndlela zinqwenelekayo neziphakamileyo zexabiso lepini yelapel. Izikhonkwane ze-enamel eziqinileyo zilungele ukuyila okulula okanye abaqulunqi bezinga leengcali.
