The Effect of a Digital Manufacturing Technique, Preparation Taper, and Finish Line Design on the Marginal Fit of Temporary Molar Crowns: An In-Vitro Study
The aim of this study is to investigate the combined effect of a digital manufacturing technique (subtractive vs. additive), preparation taper (10° vs. 20° TOC), and finish line (chamfer vs. shoulder) on the marginal adaptation of temporary crowns following cementation with a compatible temporary ce...
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MDPI AG
2023-02-01
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author | Maryam H. Mugri Harisha Dewan Mohammed E. Sayed Fawzia Ibraheem Shaabi Hanan Ibrahim Hakami Hossam F. Jokhadar Nasser M. Alqahtani Ahid Amer Alshahrani Abdullah S. Alabdullah Abdullah Hasan Alshehri Mohammed Hussain Dafer Al Wadei Fatimah Yahya Arif Ebtihag H. Adawi Bandar M. A. Al-Makramani Hitesh Chohan |
author_facet | Maryam H. Mugri Harisha Dewan Mohammed E. Sayed Fawzia Ibraheem Shaabi Hanan Ibrahim Hakami Hossam F. Jokhadar Nasser M. Alqahtani Ahid Amer Alshahrani Abdullah S. Alabdullah Abdullah Hasan Alshehri Mohammed Hussain Dafer Al Wadei Fatimah Yahya Arif Ebtihag H. Adawi Bandar M. A. Al-Makramani Hitesh Chohan |
author_sort | Maryam H. Mugri |
collection | DOAJ |
description | The aim of this study is to investigate the combined effect of a digital manufacturing technique (subtractive vs. additive), preparation taper (10° vs. 20° TOC), and finish line (chamfer vs. shoulder) on the marginal adaptation of temporary crowns following cementation with a compatible temporary cement. Four mandibular first molar typodont teeth were prepared for full coverage crowns with standard 4 mm preparation height as follows: 10° TOC with the chamfer finish line, 10° TOC with the shoulder finish line, 20° TOC with the chamfer finish line and 20° TOC with the shoulder finish line. Each of the four preparation designs were subdivided into two subgroups to receive CAD/CAM milled and 3D-printed crowns (<i>n</i> = 10). A total of 80 temporary crowns (40 CAD/CAM milled and 40 3D-printed) were cemented to their respective die using clear temporary recement in the standard cementation technique. The samples were examined under a stereomicroscope at ×100 magnification following calibration. Linear measurements were performed at seven equidistant points on each axial surface and five equidistant points on each proximal surface. One-way ANOVA analysis and Tukey HSD (Honestly Significance Difference) were performed. The best marginal fit was seen in group 8, while the poorest fit was noted in group 2. Shoulder finish lines and 10° TOC resulted in higher marginal gaps, especially in CAD/CAM milled group. The selection of 3D-printed crowns may provide a better marginal fit within the range of clinical acceptability. Marginal gaps were within clinical acceptability (50 and 120 µm) in all groups except group 2. |
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language | English |
last_indexed | 2024-03-11T09:07:15Z |
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spelling | doaj.art-b713350feead493292d6638eebc6666f2023-11-16T19:20:12ZengMDPI AGBiomedicines2227-90592023-02-0111257010.3390/biomedicines11020570The Effect of a Digital Manufacturing Technique, Preparation Taper, and Finish Line Design on the Marginal Fit of Temporary Molar Crowns: An In-Vitro StudyMaryam H. Mugri0Harisha Dewan1Mohammed E. Sayed2Fawzia Ibraheem Shaabi3Hanan Ibrahim Hakami4Hossam F. Jokhadar5Nasser M. Alqahtani6Ahid Amer Alshahrani7Abdullah S. Alabdullah8Abdullah Hasan Alshehri9Mohammed Hussain Dafer Al Wadei10Fatimah Yahya Arif11Ebtihag H. Adawi12Bandar M. A. Al-Makramani13Hitesh Chohan14Department of Maxillofacial Surgery and Diagnostic Sciences, College of Dentistry, Jazan University, Jazan 45142, Saudi ArabiaDepartment of Prosthetic Dental Sciences, College of Dentistry, Jazan University, Jazan 45142, Saudi ArabiaDepartment of Prosthetic Dental Sciences, College of Dentistry, Jazan University, Jazan 45142, Saudi ArabiaDepartment of Prosthetic Dental Sciences, College of Dentistry, Jazan University, Jazan 45142, Saudi ArabiaPrimary Care Administration, Ministry of Health, Jazan 45142, Saudi ArabiaDepartment of Oral and Maxillofacial Prosthodontics, Faculty of Dentistry, King Abdulaziz University, Jeddah 21589, Saudi ArabiaDepartment of Prosthetic Dental Sciences, College of Dentistry, King Khalid University, Abha 61413, Saudi ArabiaDepartment of Dental Technology, Applied Medical Sciences College, King Khalid University, Abha 61413, Saudi ArabiaKing Faisal Medical City, Ministry of Health, Abha 62586, Saudi ArabiaDepartment of Prosthetic Dental Sciences, College of Dentistry, King Khalid University, Abha 61413, Saudi ArabiaDepartment of Restorative Dental Sciences, College of Dentistry, King Khalid University, Abha 61413, Saudi ArabiaPrivate Practice, Jazan University, Jazan 45142, Saudi ArabiaPrimary Care Administration, Ministry of Health, Jazan 45142, Saudi ArabiaDepartment of Prosthetic Dental Sciences, College of Dentistry, Jazan University, Jazan 45142, Saudi ArabiaDepartment of Restorative Dental Sciences, College of Dentistry, Jazan University, Jazan 45142, Saudi ArabiaThe aim of this study is to investigate the combined effect of a digital manufacturing technique (subtractive vs. additive), preparation taper (10° vs. 20° TOC), and finish line (chamfer vs. shoulder) on the marginal adaptation of temporary crowns following cementation with a compatible temporary cement. Four mandibular first molar typodont teeth were prepared for full coverage crowns with standard 4 mm preparation height as follows: 10° TOC with the chamfer finish line, 10° TOC with the shoulder finish line, 20° TOC with the chamfer finish line and 20° TOC with the shoulder finish line. Each of the four preparation designs were subdivided into two subgroups to receive CAD/CAM milled and 3D-printed crowns (<i>n</i> = 10). A total of 80 temporary crowns (40 CAD/CAM milled and 40 3D-printed) were cemented to their respective die using clear temporary recement in the standard cementation technique. The samples were examined under a stereomicroscope at ×100 magnification following calibration. Linear measurements were performed at seven equidistant points on each axial surface and five equidistant points on each proximal surface. One-way ANOVA analysis and Tukey HSD (Honestly Significance Difference) were performed. The best marginal fit was seen in group 8, while the poorest fit was noted in group 2. Shoulder finish lines and 10° TOC resulted in higher marginal gaps, especially in CAD/CAM milled group. The selection of 3D-printed crowns may provide a better marginal fit within the range of clinical acceptability. Marginal gaps were within clinical acceptability (50 and 120 µm) in all groups except group 2.https://www.mdpi.com/2227-9059/11/2/570temporary crownsCAD/CAM milled3D printedpreparation taperfinish linemarginal gaps |
spellingShingle | Maryam H. Mugri Harisha Dewan Mohammed E. Sayed Fawzia Ibraheem Shaabi Hanan Ibrahim Hakami Hossam F. Jokhadar Nasser M. Alqahtani Ahid Amer Alshahrani Abdullah S. Alabdullah Abdullah Hasan Alshehri Mohammed Hussain Dafer Al Wadei Fatimah Yahya Arif Ebtihag H. Adawi Bandar M. A. Al-Makramani Hitesh Chohan The Effect of a Digital Manufacturing Technique, Preparation Taper, and Finish Line Design on the Marginal Fit of Temporary Molar Crowns: An In-Vitro Study Biomedicines temporary crowns CAD/CAM milled 3D printed preparation taper finish line marginal gaps |
title | The Effect of a Digital Manufacturing Technique, Preparation Taper, and Finish Line Design on the Marginal Fit of Temporary Molar Crowns: An In-Vitro Study |
title_full | The Effect of a Digital Manufacturing Technique, Preparation Taper, and Finish Line Design on the Marginal Fit of Temporary Molar Crowns: An In-Vitro Study |
title_fullStr | The Effect of a Digital Manufacturing Technique, Preparation Taper, and Finish Line Design on the Marginal Fit of Temporary Molar Crowns: An In-Vitro Study |
title_full_unstemmed | The Effect of a Digital Manufacturing Technique, Preparation Taper, and Finish Line Design on the Marginal Fit of Temporary Molar Crowns: An In-Vitro Study |
title_short | The Effect of a Digital Manufacturing Technique, Preparation Taper, and Finish Line Design on the Marginal Fit of Temporary Molar Crowns: An In-Vitro Study |
title_sort | effect of a digital manufacturing technique preparation taper and finish line design on the marginal fit of temporary molar crowns an in vitro study |
topic | temporary crowns CAD/CAM milled 3D printed preparation taper finish line marginal gaps |
url | https://www.mdpi.com/2227-9059/11/2/570 |
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