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Influence of different photosensitizers on push-out bond strength of fiber post to radicular dentin

机译：不同光敏剂对纤维柱推出粘结强度的影响

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摘要

Background: To evaluate the effect of different photosensitizer on extrusion bond strength of glass fiber post to radicular dentin.Material and methods: Forty maxillary and mandibular central incisors were disinfected and decoronated. Mechanical instrumentation of canal was performed using protaper NiTi. Shaping and cleaning of canal comprised of S1, S2, SX with finishing files F1 and F2, followed by continuous irrigation. Canals were dried and obturated with gutta percha. Peso reamers were used to prepare post space. Based on the photosensitizers (PS) used, the samples were divided into three groups (n = 10). Group 1: treated with methylene blue photosensitizer (MBP) at 50 mg/l, Group 2: Curcumin photosensitizer (CP) at 500 mg/l, Group 3: canal space was filled with Toluidine blue photosensitizer (TB) at 100 mg/l. All photosensitizers were activated using different lasers. The samples in group 4 (control) were irrigated using 5.25% sodium hypochlorite (NaOCl) + 17% ethylenediamine tetra acetic acid (EDTA). Posts were cemented and teeth were sectioned into coronal, middle and apical sections. All sections were placed in universal testing machine to evaluate extrusion bond strength in megapascal (MPa). Fracture pattern analysis of samples were seen under stereomicroscope at 50x magnification and categorized into adhesive, cohesive and admixed. Assessment of extrusion bond strength was performed by one-way analysis of variance (ANOVA) and Tukey multiple comparison test (p = 0.05).Results: The highest bond strength was achieved in group 2, including samples treated with curcumin photosensitizer (CP) at all three root levels; cervical (9.01 +/- 1.62 MPa), middle (7.95 +/- 0.75 MPa) and apical (5.81 +/- 0.15 MPa). Whereas, the lowest extrusion bond strength was observed in group 4 (canal irrigated with conventional 5.25% NaOCl + 17% EDTA) at coronal (6.10 +/- 1.77 MPa), middle (5.11 +/- 0.75 MPa) and apical one-thirds (3.65 +/- 0.14 MPa). Intra group comparison revealed decrease in extrusion bond strength from coronal to apical direction. Moreover, both group 2 and group 3 showed statistically significant difference to samples in control group and group 1. (p 0.05).Conclusion: TB and CP at concentration of 100 mg/l and 500 mg/l has the potential to be used as an alternate to conventional cleaning regime. TB and CP at this concentration when activated with PDT is likely to improve extrusion bond values.
机译：背景：评价不同光敏剂对玻璃纤维柱挤出粘合强度的影响。关于自由牙齿的玻璃纤维柱的挤出粘合强度。用于消毒和雄蕊的四十颌骨和下颌中央门牙。使用Propaper Niti进行运河的机械仪器。由S1，S2，SX组成的运河的成型和清洁，具有精加工文件F1和F2，然后连续灌溉。用Gutta percha干燥并溶质。比索铰刀用于准备岗位空间。基于所用光敏剂（PS），将样品分成三组（n = 10）。第1组：用50mg / L的亚甲基蓝光光敏剂（MBP）处理，第2组：姜黄素光敏剂（CP），3〜3组：管道空间以100mg / L填充甲苯胺蓝光光敏剂（TB）。 。使用不同的激光激活所有光敏剂。使用5.25％次氯酸钠（NaOCl）+ 17％乙二胺四乙酸（EDTA）灌溉第4组（对照）的样品。将柱子粘合，牙齿分成冠状，中间和顶端部分。将所有部分置于通用试验机中，以评估兆帕斯卡尔（MPA）的挤出键强度。在立体显微镜下在50倍放大率下观察样品的断裂模式分析，并分为粘合剂，粘性和混合。通过单向分析（ANOVA）和Tukey多比较试验进行挤出键强度评估（P = 0.05）。结果：在第2组中实现了最高的粘合强度，包括用姜黄素光敏剂（CP）处理的样品。所有三个根级;颈椎（9.01 +/- 1.62 MPa），中间（7.95 +/- 0.75 MPa）和顶端（5.81 +/- 0.15 MPa）。然而，在冠状病（6.10 +/- 1.77MPa）中，在第4组（用常规5.25％NaoCl + 17％EDTA灌溉的管道灌溉）中，中间（5.11 +/- 0.75MPa）和顶端三分之一的挤出粘合强度（3.65 +/- 0.14 MPa）。帧内比较显示挤出键强度与顶端方向的挤出键强度的降低。此外，第2组和第3组对对照组和第1组样品显示出统计学上显着差异（P <0.05）。结论：Tb和Cp浓度为100mg / L和500mg / L的可能性作为传统清洁制度的交替。当用PDT激活时，在该浓度下的Tb和Cp可能改善挤出键值。

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  • 来源
    《Photodiagnosis and Photodynamic Therapy》 |2020年第9期|101805.1-101805.5|共5页
  • 作者

    Ahdal Khold Al; Deeb Laila Al; Al-Hamdan Rana S.; Bin-Shuwaish Mohammed S.; Deeb Modhi Al; Maawadh Ahmed M.; AlHelal Abdulaziz; Vohra Fahim; Abduljabbar Tariq;

  • 作者单位

    King Saud Univ Dept Restorat Dent Sci Coll Dent POB 60169 Riyadh 11545 Saudi Arabia;

    King Saud Univ Dept Restorat Dent Sci Coll Dent POB 60169 Riyadh 11545 Saudi Arabia;

    King Saud Univ Dept Restorat Dent Sci Coll Dent POB 60169 Riyadh 11545 Saudi Arabia;

    King Saud Univ Dept Restorat Dent Sci Coll Dent POB 60169 Riyadh 11545 Saudi Arabia;

    King Saud Univ Dept Prosthet Dent Sci Coll Dent Riyadh 11545 Saudi Arabia;

    King Saud Univ Dept Restorat Dent Sci Coll Dent POB 60169 Riyadh 11545 Saudi Arabia;

    King Saud Univ Dept Prosthet Dent Sci Coll Dent Riyadh 11545 Saudi Arabia|King Saud Univ Biol Res Dent Hlth Riyadh Saudi Arabia;

    King Saud Univ Dept Prosthet Dent Sci Coll Dent Riyadh 11545 Saudi Arabia|King Saud Univ Biol Res Dent Hlth Riyadh Saudi Arabia;

    King Saud Univ Dept Prosthet Dent Sci Coll Dent Riyadh 11545 Saudi Arabia|King Saud Univ Biol Res Dent Hlth Riyadh Saudi Arabia;

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  • 正文语种 eng
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  • 关键词

    Push-out bond strength; Photosensitizers; Photodynamic therapy; Fiber post; Modes of failure;

    机译：推出债券强度;光敏剂;光动力疗法;光纤柱;失败模式;

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