Marginal and internal fit of 3D printed provisional crowns according to build directions
© 2020 The Korean Academy of Prosthodontics..
PURPOSE: This study aimed to fabricate provisional crowns at varying build directions using the digital light processing (DLP)-based 3D printing and evaluate the marginal and internal fit of the provisional crowns using the silicone replica technique (SRT).
MATERIALS AND METHODS: The prepared resin tooth was scanned and a single crown was designed using computer-aided design (CAD) software. Provisional crowns were printed using a DLP-based 3D printer at 6 directions (120°, 135°, 150°, 180°, 210°, 225°) with 10 crowns in each direction. In total, sixty crowns were printed. To measure the marginal and internal fit, a silicone replica was fabricated and the thickness of the silicone impression material was measured using a digital microscope. Sixteen reference points were set and divided into the following 4 groups: marginal gap (MG), cervical gap (CG), axial gap (AG), and occlusal gap (OG). The measurements were statistically analyzed using one-way ANOVA and Dunnett T3.
RESULTS: MG, CG, and OG were significantly different by build angle groups (P<.05). The MG and CG were significantly larger in the 120° group than in other groups. OG was the smallest in the 150° and 180° and the largest in the 120° and 135° groups.
CONCLUSION: The marginal and internal fit of the 3D-printed provisional crowns can vary depending on the build angle and the best fit was achieved with build angles of 150° and 180°.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2020 |
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| Erschienen: |
2020 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:12 |
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| Enthalten in: |
The journal of advanced prosthodontics - 12(2020), 4 vom: 26. Aug., Seite 225-232 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Ryu, Ji-Eun [VerfasserIn] |
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| Links: |
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| Themen: |
Crowns |
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| Anmerkungen: |
Date Revised 28.09.2020 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
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| doi: |
10.4047/jap.2020.12.4.225 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM314526374 |
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| 500 | |a Date Revised 28.09.2020 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status PubMed-not-MEDLINE | ||
| 520 | |a © 2020 The Korean Academy of Prosthodontics. | ||
| 520 | |a PURPOSE: This study aimed to fabricate provisional crowns at varying build directions using the digital light processing (DLP)-based 3D printing and evaluate the marginal and internal fit of the provisional crowns using the silicone replica technique (SRT) | ||
| 520 | |a MATERIALS AND METHODS: The prepared resin tooth was scanned and a single crown was designed using computer-aided design (CAD) software. Provisional crowns were printed using a DLP-based 3D printer at 6 directions (120°, 135°, 150°, 180°, 210°, 225°) with 10 crowns in each direction. In total, sixty crowns were printed. To measure the marginal and internal fit, a silicone replica was fabricated and the thickness of the silicone impression material was measured using a digital microscope. Sixteen reference points were set and divided into the following 4 groups: marginal gap (MG), cervical gap (CG), axial gap (AG), and occlusal gap (OG). The measurements were statistically analyzed using one-way ANOVA and Dunnett T3 | ||
| 520 | |a RESULTS: MG, CG, and OG were significantly different by build angle groups (P<.05). The MG and CG were significantly larger in the 120° group than in other groups. OG was the smallest in the 150° and 180° and the largest in the 120° and 135° groups | ||
| 520 | |a CONCLUSION: The marginal and internal fit of the 3D-printed provisional crowns can vary depending on the build angle and the best fit was achieved with build angles of 150° and 180° | ||
| 650 | 4 | |a Journal Article | |
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| 650 | 4 | |a Dental internal fit | |
| 650 | 4 | |a Dental marginal adaptation | |
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| 700 | 1 | |a Kong, Hyun-Jun |e verfasserin |4 aut | |
| 700 | 1 | |a Chang, Hoon-Sang |e verfasserin |4 aut | |
| 700 | 1 | |a Jung, Ji-Hye |e verfasserin |4 aut | |
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