The Fracture Resistance of Additively Manufactured Monolithic Zirconia vs. Bi-Layered Alumina Toughened Zirconia Crowns When Cemented to Zirconia Abutments. Evaluating the Potential of 3D Printing of Ceramic Crowns: An In Vitro Study
(1) Background: This study compared the fracture resistance of additively manufactured monolithic zirconia and bi-layered alumina toughened zirconia crowns on implants. (2) Methods: Maxillary model with a dental implant replacing right second bicuspid was obtained. Custom abutments and full-contour...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-10-01
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| Series: | Dentistry Journal |
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| Online Access: | https://www.mdpi.com/2304-6767/9/10/115 |
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| author | Amirali Zandinejad Marta Revilla-León Mohammad Mujtaba Methani Leila Nasiry Khanlar Dean Morton |
| author_facet | Amirali Zandinejad Marta Revilla-León Mohammad Mujtaba Methani Leila Nasiry Khanlar Dean Morton |
| author_sort | Amirali Zandinejad |
| collection | DOAJ |
| description | (1) Background: This study compared the fracture resistance of additively manufactured monolithic zirconia and bi-layered alumina toughened zirconia crowns on implants. (2) Methods: Maxillary model with a dental implant replacing right second bicuspid was obtained. Custom abutments and full-contour crowns for additively manufactured monolithic zirconia and bi-layered alumina reinforced zirconia crowns (<i>n</i> = 10) were fabricated. The crowns were cemented to implant-supported zirconia abutments and the assembly fixed onto resin blocks. Fracture resistance was measured using a universal testing machine at a crosshead speed of 2 mm/min. A Kruskal–Wallis test was used to analyze the data. (3) Results: Although additively manufactured monolithic zirconia crowns demonstrated a higher mean fracture resistance than bi-layered alumina toughened zirconia crowns, statistical analysis revealed no significant difference in fracture resistance between the two groups. All specimens fractured at the implant–abutment interface. (4) Conclusions: Additively manufactured bi-layered alumina toughened zirconia crowns demonstrated similar fracture resistance to additively manufactured monolithic zirconia crowns when cemented to implant-supported zirconia abutments. |
| first_indexed | 2024-03-10T06:37:35Z |
| format | Article |
| id | doaj.art-764126909cec456b8cc380fa983cadd0 |
| institution | Directory Open Access Journal |
| issn | 2304-6767 |
| language | English |
| last_indexed | 2024-03-10T06:37:35Z |
| publishDate | 2021-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Dentistry Journal |
| spelling | doaj.art-764126909cec456b8cc380fa983cadd02023-11-22T17:55:47ZengMDPI AGDentistry Journal2304-67672021-10-0191011510.3390/dj9100115The Fracture Resistance of Additively Manufactured Monolithic Zirconia vs. Bi-Layered Alumina Toughened Zirconia Crowns When Cemented to Zirconia Abutments. Evaluating the Potential of 3D Printing of Ceramic Crowns: An In Vitro StudyAmirali Zandinejad0Marta Revilla-León1Mohammad Mujtaba Methani2Leila Nasiry Khanlar3Dean Morton4Department of Comprehensive Dentistry, College of Dentistry, Texas A&M University, Dallas, TX 75246, USADepartment of Comprehensive Dentistry, College of Dentistry, Texas A&M University, Dallas, TX 75246, USADepartment of Biomedical Sciences, College of Dentistry, Texas A&M University, Dallas, TX 75246, USADepartment of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45, Bunkyo-ku Yushima, Tokyo 113-8510, JapanDepartment of Prosthodontics, Indiana University School of Dentistry, Indianapolis, IN 46202, USA(1) Background: This study compared the fracture resistance of additively manufactured monolithic zirconia and bi-layered alumina toughened zirconia crowns on implants. (2) Methods: Maxillary model with a dental implant replacing right second bicuspid was obtained. Custom abutments and full-contour crowns for additively manufactured monolithic zirconia and bi-layered alumina reinforced zirconia crowns (<i>n</i> = 10) were fabricated. The crowns were cemented to implant-supported zirconia abutments and the assembly fixed onto resin blocks. Fracture resistance was measured using a universal testing machine at a crosshead speed of 2 mm/min. A Kruskal–Wallis test was used to analyze the data. (3) Results: Although additively manufactured monolithic zirconia crowns demonstrated a higher mean fracture resistance than bi-layered alumina toughened zirconia crowns, statistical analysis revealed no significant difference in fracture resistance between the two groups. All specimens fractured at the implant–abutment interface. (4) Conclusions: Additively manufactured bi-layered alumina toughened zirconia crowns demonstrated similar fracture resistance to additively manufactured monolithic zirconia crowns when cemented to implant-supported zirconia abutments.https://www.mdpi.com/2304-6767/9/10/115additive manufacturingzirconia crownalumina reinforced zirconia crownfracture resistance |
| spellingShingle | Amirali Zandinejad Marta Revilla-León Mohammad Mujtaba Methani Leila Nasiry Khanlar Dean Morton The Fracture Resistance of Additively Manufactured Monolithic Zirconia vs. Bi-Layered Alumina Toughened Zirconia Crowns When Cemented to Zirconia Abutments. Evaluating the Potential of 3D Printing of Ceramic Crowns: An In Vitro Study Dentistry Journal additive manufacturing zirconia crown alumina reinforced zirconia crown fracture resistance |
| title | The Fracture Resistance of Additively Manufactured Monolithic Zirconia vs. Bi-Layered Alumina Toughened Zirconia Crowns When Cemented to Zirconia Abutments. Evaluating the Potential of 3D Printing of Ceramic Crowns: An In Vitro Study |
| title_full | The Fracture Resistance of Additively Manufactured Monolithic Zirconia vs. Bi-Layered Alumina Toughened Zirconia Crowns When Cemented to Zirconia Abutments. Evaluating the Potential of 3D Printing of Ceramic Crowns: An In Vitro Study |
| title_fullStr | The Fracture Resistance of Additively Manufactured Monolithic Zirconia vs. Bi-Layered Alumina Toughened Zirconia Crowns When Cemented to Zirconia Abutments. Evaluating the Potential of 3D Printing of Ceramic Crowns: An In Vitro Study |
| title_full_unstemmed | The Fracture Resistance of Additively Manufactured Monolithic Zirconia vs. Bi-Layered Alumina Toughened Zirconia Crowns When Cemented to Zirconia Abutments. Evaluating the Potential of 3D Printing of Ceramic Crowns: An In Vitro Study |
| title_short | The Fracture Resistance of Additively Manufactured Monolithic Zirconia vs. Bi-Layered Alumina Toughened Zirconia Crowns When Cemented to Zirconia Abutments. Evaluating the Potential of 3D Printing of Ceramic Crowns: An In Vitro Study |
| title_sort | fracture resistance of additively manufactured monolithic zirconia vs bi layered alumina toughened zirconia crowns when cemented to zirconia abutments evaluating the potential of 3d printing of ceramic crowns an in vitro study |
| topic | additive manufacturing zirconia crown alumina reinforced zirconia crown fracture resistance |
| url | https://www.mdpi.com/2304-6767/9/10/115 |
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