Impact of different agitation methods on smear layer cleaning of mesial canals with accentuated curvature.

Restorative Dentistry & Endodontics Pub Date : 2024-03-04 eCollection Date: 2024-05-01 DOI:10.5395/rde.2024.49.e12
Abel Teves Cordova, Murilo Priori Alcalde, Michel Espinosa Klymus, Leonardo Rigoldi Bonjardim, Rodrigo Ricci Vivan, Marco Antonio Hungaro Duarte
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Abstract

Objectives: This study evaluated the impact of different methods of irrigant agitation on smear layer removal in the apical third of curved mesial canals of 3 dimensionally (D) printed mandibular molars.

Materials and methods: Sixty 3D-printed mandibular second molars were used, presenting a 70° curvature and a Vertucci type II configuration in the mesial root. A round cavity was cut 2 mm from the apex using a trephine of 2 mm in diameter, 60 bovine dentin disks were made, and a smear layer was formed. The dentin disks had the adaptation checked in the apical third of the teeth with wax. The dentin disks were evaluated in environmental scanning electron microscope before and after the following irrigant agitation methods: G1(PIK Ultrasonic Tip), G2 (Passive Ultrasonic Irrigation with Irrisonic- PUI), G3 (Easy Clean), G4 (HBW Ultrasonic Tip), G5 (Ultramint X Ultrasonic tip), and G6 (conventional irrigation-CI) (n = 10). All groups were irrigated with 2.5% sodium hypochlorite and 17% ethylenediaminetetraacetic acid.

Results: All dentin disks were 100% covered by the smear layer before treatment, and all groups significantly reduced the percentage of the smear layer after treatment. After the irrigation protocols, the Ultra-X group showed the lowest coverage percentage, statistically differing from the conventional, PIK, and HBW groups (p < 0.05). There was no significant difference among Ultramint X, PUI-Irrisonic, and Easy Clean (p > 0.05). None of the agitation methods could remove the smear layer altogether.

Conclusions: Ultramint X resulted in the most significant number of completely clean specimens.

不同的搅拌方法对有明显弯曲的中轴管涂抹层清洁的影响
目的:本研究评估了不同的冲洗剂搅拌方法对三维打印(D)下颌磨牙弯曲中轴根尖三分之一处涂抹层去除的影响:本研究评估了不同的冲洗剂搅拌方法对三维(D)打印下颌磨牙弯曲中轴管根尖三分之一处涂抹层去除的影响:使用了 60 颗三维打印的下颌第二磨牙,这些磨牙的弧度为 70°,中牙根的结构为 Vertucci II 型。使用直径为 2 毫米的穿刺器在距根尖 2 毫米处切开一个圆形空腔,制作 60 个牛牙本质盘并形成涂抹层。用蜡检查牙本质盘在牙根尖三分之一处的适应性。在环境扫描电子显微镜下,对牙本质盘在使用以下冲洗剂搅拌方法前后的情况进行了评估:G1(PIK 超声波头)、G2(被动超声波灌洗-PUI)、G3(易洁)、G4(HBW 超声波头)、G5(Ultramint X 超声波头)和 G6(传统灌洗-CI)(n = 10)。所有组别均使用 2.5% 次氯酸钠和 17% 乙二胺四乙酸进行灌洗:结果:治疗前,所有牙本质盘都被100%的涂抹层覆盖,治疗后,所有组别都显著降低了涂抹层的百分比。灌洗后,Ultra-X 组的覆盖率最低,与传统组、PIK 组和 HBW 组相比有统计学差异(p < 0.05)。Ultramint X、PUI-Irisonic 和 Easy Clean 之间没有明显差异(P > 0.05)。没有一种搅拌方法能完全去除涂抹层:结论:Ultramint X 可使完全清洁的标本数量最多。
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来源期刊
CiteScore
0.20
自引率
0.00%
发文量
35
审稿时长
12 weeks
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