10 Pcs Transparent Orthodontic Composite Lingual Buttons Dental Bondable Round Base, Packing : 10 Pcs / Pack, total 1 Pack Bondable ceramic round lingual buttons are made of the high quality material Polycrystal to achieve good biocompatibilityIts low profile and small size the comfortable The base has retentive cuts to guarantee a better bond strength and a predictable debonding, Mesh structure of base makes a strong bonding. Packing : 10 Pcs / Pack, total 1 Pack