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. 2023 Apr 26:20:53.
eCollection 2023.

Marginal fit of endocrowns fabricated by three-dimensional printing and the conventional method: An in vitro study

Sina Jamshidi  1 , Reza Darabi  1 , Mohammad Azarian  1 , Meysam Mahabadi  1 , Monireh Nilli  1
Affiliations

Marginal fit of endocrowns fabricated by three-dimensional printing and the conventional method: An in vitro study

Sina Jamshidi et al. Dent Res J (Isfahan). .

Abstract

Background: Marginal fit is a key factor in success of prosthetic restorations. This study aimed to assess and compare the marginal fit of endocrowns fabricated by three-dimensional (3D) printing and the conventional method.

Materials and methods: This in vitro, experimental study evaluated 20 endocrowns, of which 10 were fabricated by 3D printing and 10 were fabricated by the conventional wax-up technique. The marginal gap was measured at 8 points under a stereomicroscope. The results were analyzed using the Shapiro-Wilk test, paired t-test, independent t-test, and one-way analysis of variance (α = 0.05).

Results: The mean marginal gap was maximum at the distal point, and minimum at the buccal point for the conventionally fabricated endocrowns with an overall mean marginal gap of 99.67 ± 4.59 μm. The mean marginal gap was maximum at the mesiobuccal and minimum at the buccal point before pressing (overall mean of 103.92 ± 2.19 μm) before pressing, and maximum at the distobuccal and minimum at the mesiobuccal point after pressing (overall mean of 117.67 ± 2.87 μm). According to paired t-test, the mean marginal gap of endocrowns fabricated by 3D printing significantly increased after pressing at all 8 points and also in general, compared with before pressing (P < 0.001). Furthermore, the mean marginal gap at all points was significantly greater in endocrowns fabricated by 3D printing compared with those fabricated by the conventional method (independent t-test, P < 0.001).

Conclusion: Within the limitations of this in vitro study, the results showed that endocrowns fabricated by the conventional method had significantly superior marginal fit than those fabricated by 3D printing.

Keywords: Dental marginal adaptation; dental prosthesis; printing; three-dimensional.

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Conflict of interest statement

The authors of this manuscript declare that they have no conflicts of interest, real or perceived, financial or nonfinancial in this article.

Figures

Figure 1
Figure 1
Schematic view of an endocrown.
Figure 2
Figure 2
Measuring the marginal gap under a stereomicroscope (×10 magnification).
See this image and copyright information in PMC

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