I-enamel pin i-rectangular in shape, kunye nemifanekiso emibini yokubuyela emva kumzimba oyintloko womfanekiso, ngendlela elula kunye nesitayela. Intliziyo ebomvu ebethayo phakathi kwabalinganiswa yongeza umoya wothando kuyo yonke into, Le ntsimbi ye-enamel pin i-polarizing isiphumo sokukhanya kunye ne-epoxy, kwaye ukuhambelana kombala ngokuyinhloko ku-pinki ethambileyo kunye nomhlophe, ongezelelweyo imigca ebomvu kunye nokuhonjiswa kwentliziyo ebomvu, kwaye umphumo obonakalayo uyingqayizivele.
