Gupta Ekta, Chaugule Tejas A, Gurrala Chaitanya, Nath Gaurab Jyoty, Padma Priya C V, Kudagi Vishal S
Department of Orthodontics and Dentofacial Orthopeadics, Siddhpur Dental College and Hospital, Patan, Gujarat, India.
Department of Orthodontics and Dentofacial Orthopaedics, Vasantdada Dental College and Hospital, Kavlapur, Sangli, Maharashtra, India.
J Pharm Bioallied Sci. 2024 Feb;16(Suppl 1):S180-S182. doi: 10.4103/jpbs.jpbs_446_23. Epub 2024 Feb 29.
The aim of this study was to evaluate the effect of separately curing the unfilled resin for increased bond strength of the orthodontic brackets as the literature shows both studies that support and contradict this aspect.
The sample consisted of 120 specimens randomly grouped into four of 30. The tooth was cleaned of tissue and debris and stored in a distilled water solution until the procedures of bonding. The surface of the enamel was conditioned with pumice, and acrylic blocks were designed for the tooth to be mounted onto them. The buccal surfaces of all the teeth were prepared by etching the enamel with 37% phosphoric acid for a time period of 30 seconds and washed for 20 seconds under running water. Stainless steel brackets (Victory Series™ MBT, 0.022 Slot) were used for all the samples in the study, and the bonding procedure was conducted on the same day for all the groups. The artificial saliva was used for the storage of samples for 24 h after bonding, and shear bond strength testing was conducted using an Instron machine in shear or peel mode at a crosshead speed.
The highest mean bond strength calculated was for the conventional technique (17.45 mpa), while it was the lowest for no primer adhesive (11.21 mpa). Group IV had a greater distribution of ARI scores than groups I, II, and III.
Group IV achieved the highest bond strength when compared to other groups, with an ARI score of 3. Group III had less bond strength, likely due to incomplete curing of the primer due to insufficient exposure to light. Transbond XT can be used without primer, making bonding, debonding, and cleaning procedures easy and less time-consuming.
本研究的目的是评估单独固化未填充树脂对提高正畸托槽粘结强度的效果，因为文献中既有支持这一方面的研究，也有与之矛盾的研究。
样本由120个标本组成，随机分为四组，每组30个。清洁牙齿表面的组织和碎屑，并将其储存在蒸馏水溶液中，直至进行粘结程序。用浮石对釉质表面进行预处理，并设计丙烯酸块用于安装牙齿。所有牙齿的颊面用37%磷酸蚀刻釉质30秒，然后在流水下冲洗20秒。本研究中所有样本均使用不锈钢托槽（Victory Series™ MBT，0.022槽），所有组均在同一天进行粘结程序。粘结后，使用人工唾液储存样本24小时，并使用Instron机器以剪切或剥离模式在十字头速度下进行剪切粘结强度测试。
计算得出的最高平均粘结强度是传统技术组（17.45 mpa），而无底漆粘合剂组最低（11.21 mpa）。与I、II和III组相比，IV组的ARI评分分布更高。
与其他组相比，IV组的粘结强度最高，ARI评分为3。III组的粘结强度较低，可能是由于底漆曝光不足导致固化不完全。Transbond XT可以不使用底漆，使粘结、脱粘和清洁程序简单且耗时更少。
