Raj R Akhila, El-Shamy Fahiem Mohammad, Ajit Mannur Nikita, Roy Kasturi, Oak Anjali, Ameer Bilal
Department of Conservative Dentistry and Endodontics, Amrita School of Dentistry, Amrita Viswavidyapeetham, Amrita Institute of Medical Sciences (AIMS), Kochi, IND.
Department of Dental Biomaterials, Faculty of Dentistry, Mansoura University, Egypt, EGY.
Cureus. 2023 Jul 7;15(7):e41499. doi: 10.7759/cureus.41499. eCollection 2023 Jul.
The goal of the study was to assess the push-out bond strength of the glass fibre post after different surface treatments.
For the purpose of the investigation, 40 mandibular premolars were chosen. After gaining access, the biomechanical preparation was completed using the step-back approach up to a size 40K file, and the canals were sealed using gutta-percha cones and the lateral condensation procedure with AH Plus sealer (epoxide-amine resin pulp canal sealer). Peeso reamers were used to remove the canal fillings, leaving 5mm of gutta-percha apically. Drills included in the package were used to prepare the post spaces so that the posts would fit in their respective post slots. These were attached to self-curing acrylic resin blocks. Fibre posts were split into four groupings of n = 10 each for surface treatment, i.e., control, hydrogen fluoride, sandblasting, and hydrogen peroxide. The cementation of posts was done by utilising dual-cure resin cement. Two millimetres of the anatomical crown were removed from each sample. Each sample's 1-mm cervical segment was taken utilising the isotope from the remaining coronal area. To perform a push-out test, at the rate of 0.5mm/min of the crosshead, every sample was inserted into a universal testing device. Each post's dislodge force from the pre-set post spacing was measured. Statistics were utilised to analyse the data.
Strongest bonds were made by silanization, followed by sandblasting (p value=0.002). The weakest bonds were made by the control group.
The ultimate deduction was that when glass fibre posts underwent various types of surface treatments followed by silanization, it had a significant impact on increasing their strength.
本研究的目的是评估不同表面处理后玻璃纤维桩的推出粘结强度。
为进行本研究，选取了40颗下颌前磨牙。开髓后，采用逐步后退法完成生物力学预备，直至40K锉，并用牙胶尖和AH Plus封闭剂（环氧胺树脂牙髓根管封闭剂）进行侧向加压充填根管。使用Peeso扩孔钻去除根管充填物，根尖保留5mm牙胶。使用包装内的钻头制备桩道，以便桩能适配各自的桩槽。将其固定于自凝丙烯酸树脂块上。纤维桩分为四组，每组n = 10，分别进行表面处理，即对照组、氢氟酸处理组、喷砂处理组和过氧化氢处理组。桩的粘结采用双固化树脂粘结剂。从每个样本上切除2mm的解剖冠。利用剩余冠部区域的同位素获取每个样本1mm的颈部节段。为进行推出试验，以0.5mm/min的十字头速度将每个样本插入万能测试装置。测量每个桩从预设桩道间距脱出的力。采用统计学方法分析数据。
硅烷化处理组的粘结强度最强，其次是喷砂处理组（p值 = 0.002）。对照组的粘结强度最弱。
最终得出的结论是，玻璃纤维桩经过各种表面处理后再进行硅烷化处理，对提高其强度有显著影响。
