Arora Nishtha, Al-Jearah Mohammed
MDS Orthodontics & Dentofacial Orthopedics, JCD Dental College, Sirsa, Haryana, India.
Orthodontist, Department of Preventive Dental Sciences, Faculty of Dentistry, Najran University, KSA.
Bioinformation. 2021 Apr 30;17(4):492-499. doi: 10.6026/97320630017492. eCollection 2021.
It is of interest to compare the bonding characteristics of the two nano filled adhesives, Grandio (Voco, Cuxhaven, Germany) and Transbond Supreme LV (TSLV, 3M Unitek, Monrovia, California) with conventional bonding adhesive Transbond XT (TBXT, 3M Unitek) for bonding of molar tubes. 45 extracted human permanent molar teeth, divided into three groups of 15 each, were bonded with stainless steel molar tubes (3M Unitek, USA) using TBXT in Group 1, Grandio in Group 2, TSLV in Group 3. Remnant Index and shear bond strength was evaluated after 24 hrs. of storage with the aid of Instron Universal testing machine and Stereomicroscope respectively. Data were analysed using Analysis of Variance (ANOVA) test, Post-hoc Bonferroni test and Kruskal Wallis test. The mean SBS of Group 1(TBXT) was 13.86±3.27 MPa, Group 2 (Grandio) was 9.48±2.36 MPa and Group 3 (TSLV) was 11.64±2.71 MPa. Both nano-filled adhesives had SBS well above the clinically acceptable range. Assessment of ARI scores and type of bond failure revealed that adhesive failure for TBXT and TSLV and cohesive failure for Grandio. Nano-filled adhesives can be an appropriate substitute for the conventional adhesive for bonding of molar tubes.
比较两种纳米填充型粘合剂Grandio（德国库克斯港Voco公司）和Transbond Supreme LV（TSLV，美国加利福尼亚州蒙罗维亚3M Unitek公司）与传统粘结粘合剂Transbond XT（TBXT，3M Unitek公司）用于粘结磨牙管的粘结特性，这很有意思。将45颗拔除的人类恒牙分为三组，每组15颗，分别使用第1组的TBXT、第2组的Grandio、第3组的TSLV与不锈钢磨牙管（美国3M Unitek公司）进行粘结。在储存24小时后，分别借助Instron万能试验机和体视显微镜评估残余指数和剪切粘结强度。使用方差分析（ANOVA）检验、事后邦费罗尼检验和克鲁斯卡尔 - 沃利斯检验对数据进行分析。第1组（TBXT）的平均SBS为13.86±3.27 MPa，第2组（Grandio）为9.48±2.36 MPa，第3组（TSLV）为11.64±2.71 MPa。两种纳米填充型粘合剂的SBS均远高于临床可接受范围。对ARI评分和粘结失败类型的评估显示，TBXT和TSLV为粘结剂失败，Grandio为内聚破坏。纳米填充型粘合剂可以作为传统粘合剂用于粘结磨牙管的合适替代品。
