Apical and lateral accuracy of intraradicular impressions made using the indirect and direct technique at three different locations: A comparative in vitro analysis.

Q2 Dentistry Dental Research Journal Pub Date : 2024-07-12 eCollection Date: 2024-01-01

Godwin Clovis Da Costa, Praveen Rajagopal, Meena Ajay Aras, Amanda Nadia Ferreira

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Abstract

Background: There is limited literature available comparing the accuracy of intraradicular impressions made with a novel hybrid impression material using the indirect and direct technique at three different locations.

Materials and methods: For this comparative in vitro analysis, postspace was prepared in 15 recently extracted teeth and impressions made with vinyl polysiloxane, polyether (PE), vinyl polyether silicone (VPES), and pattern resin. Postpatterns obtained were re-seated on the teeth and longitudinally sectioned. A binocular microscope was used to measure apical and lateral discrepancies at three locations (L1, L2, and L3). L1 at the postcore junction, L2 at the middle of the post space, and L3, 2 mm short of the apical end. The data obtained were statistically analyzed using the Statistical Package for the Social Sciences (SPSS) software. One-way analysis of variance (ANOVA) (intergroup) followed by Tukey's post hoc test with P ≤ 0.05 was used.

Results: The one-way ANOVA noted a highly significant difference at the apical location. Pattern resin had the highest apical discrepancy (151.93 ± 8.59 µm), whereas the lowest was with vinyl PE silicone (140.31 ± 11.46 µm). At L1, the highest discrepancy was seen with pattern resin (32.09 ± 2.31 µm), whereas the lowest was with the addition silicone (31.94 ± 2.54 µm). At L2, addition silicone (32.88 ± 2.81 µm) showed the highest discrepancy, whereas the lowest was with vinyl PE silicone (30.5 ± 8.79 µm). The PE group had the highest mean at the L3 location (31.38 ± 3.46 µm) and the lowest was with vinyl PE silicone (30.93 ± 2.25 µm). At all lateral locations, no significant difference was noted. Tukey's post hoc comparison showed a significant difference between pattern resin and VPES (11.62 µm) followed by pattern resin and addition silicone (11.47 µm) apically.

Conclusion: The indirect technique using VPES or addition silicone is more accurate than the direct technique at the apical location.

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在三个不同位置使用间接和直接技术制作的牙槽内印模的根尖和侧面准确性：体外比较分析。

背景：使用一种新型混合印模材料，在三个不同位置使用间接和直接技术制作的关节内印模的准确性进行比较的文献有限：为了进行体外比较分析，在 15 颗新近拔出的牙齿上制备了后间隙，并使用乙烯基聚硅氧烷、聚醚（PE）、乙烯基聚醚硅酮（VPES）和模式树脂制作了印模。将获得的后模重新固定在牙齿上，并进行纵向切片。使用双目显微镜测量三个位置（L1、L2 和 L3）的根尖和侧面差异。L1 位于牙本质交界处，L2 位于牙本质间隙中部，L3 位于距根尖端短 2 毫米处。获得的数据使用社会科学统计软件包（SPSS）进行统计分析。采用单因素方差分析（ANOVA）（组间），然后进行 Tukey 后检验，P≤0.05：结果：单因素方差分析显示，牙尖位置的差异非常显著。花纹树脂的根尖差异最大（151.93 ± 8.59 µm），而乙烯基 PE 硅酮的根尖差异最小（140.31 ± 11.46 µm）。在 L1，图案树脂的差异最大（32.09 ± 2.31 µm），而添加硅酮的差异最小（31.94 ± 2.54 µm）。在 L2，添加硅酮（32.88 ± 2.81 µm）的差异最大，而乙烯基 PE 硅酮（30.5 ± 8.79 µm）的差异最小。在 L3 位置，PE 组的平均值最高（31.38 ± 3.46 µm），而乙烯基 PE 硅胶的平均值最低（30.93 ± 2.25 µm）。在所有侧位上，均无明显差异。Tukey's事后比较显示，模式树脂和 VPES（11.62 微米）之间存在显著差异，其次是模式树脂和添加硅酮（11.47 微米）：结论：在根尖位置使用 VPES 或添加硅酮的间接技术比直接技术更准确。

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来源期刊

Dental Research Journal Dentistry-Dentistry (all)

CiteScore

1.70

自引率

0.00%

发文量

审稿时长

52 weeks

期刊介绍： Dental Research Journal, a publication of Isfahan University of Medical Sciences, is a peer-reviewed online journal with Bimonthly print on demand compilation of issues published. The journal’s full text is available online at http://www.drjjournal.net. The journal allows free access (Open Access) to its contents and permits authors to self-archive final accepted version of the articles on any OAI-compliant institutional / subject-based repository. The journal will cover technical and clinical studies related to health, ethical and social issues in field of Dentistry. Articles with clinical interest and implications will be given preference.