Clinical Performance of Light-cured Orthodontic Adhesives for Bonding Brackets – An In-vitro Study.

This was an in-vitro study conducted on 80 extracted maxillary premolars. Teeth with the sound crown structure were acid etched and bonded with brackets on their buccal surfaces utilizing primer and light-cured adhesives into four equal groups, which are Transbond XT, Heliosit, Enlight, and Bracepaste. Shear Bond Strength (SBS) for de-bonding the brackets were evaluated with Instron- testing machine after 48 hours. The de-bonded samples’ Adhesive Remnant Index (ARI) scores were also measured.本研究为一项体外实验，共纳入80颗拔除的上颌前磨牙。选取牙冠结构完整的受试牙，对其颊面实施酸蚀处理，随后分别使用粘接底漆与光固化粘接剂将托槽粘接于牙面，并将所有样本均分为四组，各组分别采用Transbond XT、Heliosit、Enlight及Bracepaste四种粘接系统。于粘接完成后48小时，采用英斯特朗（Instron）试验机进行托槽脱粘接测试，评估各组的剪切粘接强度（Shear Bond Strength，SBS）；同时对脱粘接后的样本进行粘接残留指数（Adhesive Remnant Index，ARI）评分。