Positional trueness of three removable die designs with different root geometries manufactured using stereolithographic 3D printing
Three-dimensional (3D) printed casts are a suitable alternative to dental stone casts. Contemporary dental design computer programs permit designing definitive casts with removable dies with different root geometries and retention mechanisms. Studies on the positional trueness of 3D printed removabl...
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| Veröffentlicht in: | The Journal of prosthetic dentistry 2025-01, Vol.133 (1), p.178-183 |
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| creator | Azpiazu-Flores, Francisco X. Johnston, William M. Mata-Mata, Severino J. Yilmaz, Burak |
| description | Three-dimensional (3D) printed casts are a suitable alternative to dental stone casts. Contemporary dental design computer programs permit designing definitive casts with removable dies with different root geometries and retention mechanisms. Studies on the positional trueness of 3D printed removable dies with different root geometries are lacking.
The purpose of this in vitro study was to investigate the 3D displacements of three 3D printed removable die designs with different root geometries.
The digital file of a dental stone alveolar cast with root-form removable dies (MOD UJ IV Fixed Prosthetics; Ivoclar AG) was used as a reference to create 3 removable die and alveolar cast designs (Root Form, RF; Conical, CON; Cylindric, CYL) with different root geometries in 2 dental design computer programs (DentalCAD 3.1 Rijeka; exocad; GmbH; InLab CAD 22.0; Dentsply Sirona). 3 equidistant Ø1-mm spheres (C, Cervical; M, Middle; O, Occlusal) were designed on the buccal surface of the coronal portion of the removable die to evaluate their displacement. A total of 45 alveolar casts with 45 removable dies were fabricated using a stereolithographic 3D printer (Form 3; Formlabs); each die group consisted of 15 specimens. After fabrication and postprocessing, the specimens were scanned, and their digital files were analyzed in a metrology-grade computer program to evaluate the displacement of the removable dies with respect to the position of the die in the master reference file. Subsequently, the data were analyzed using a 3-way analysis of variance (ANOVA) followed by step-down Bonferroni-corrected pairwise comparisons (α=.05).
Two statistically significant 2-way interactions were detected between the independent variables, die design and direction (P |
| doi_str_mv | 10.1016/j.prosdent.2023.08.036 |
| format | Article |
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The purpose of this in vitro study was to investigate the 3D displacements of three 3D printed removable die designs with different root geometries.
The digital file of a dental stone alveolar cast with root-form removable dies (MOD UJ IV Fixed Prosthetics; Ivoclar AG) was used as a reference to create 3 removable die and alveolar cast designs (Root Form, RF; Conical, CON; Cylindric, CYL) with different root geometries in 2 dental design computer programs (DentalCAD 3.1 Rijeka; exocad; GmbH; InLab CAD 22.0; Dentsply Sirona). 3 equidistant Ø1-mm spheres (C, Cervical; M, Middle; O, Occlusal) were designed on the buccal surface of the coronal portion of the removable die to evaluate their displacement. A total of 45 alveolar casts with 45 removable dies were fabricated using a stereolithographic 3D printer (Form 3; Formlabs); each die group consisted of 15 specimens. After fabrication and postprocessing, the specimens were scanned, and their digital files were analyzed in a metrology-grade computer program to evaluate the displacement of the removable dies with respect to the position of the die in the master reference file. Subsequently, the data were analyzed using a 3-way analysis of variance (ANOVA) followed by step-down Bonferroni-corrected pairwise comparisons (α=.05).
Two statistically significant 2-way interactions were detected between the independent variables, die design and direction (P<.001), and location and direction (P<.001). The post hoc analysis identified significant differences between the displacement values of RF and CYL (P<.001) and RF and the CON (P<.001) designs on the Y axis. The measured displacements were statistically different between the C and O locations on the Y axis (P=.001) and the M and O locations on the Z axis (P=.006).
The root geometry of a 3D printed removable die and alveolar cast can affect seating, and variable degrees of tipping of the removable die can be seen. The seating and congruence of the removable die with the interocclusal space and relationships observed intraorally should be confirmed before adjusting indirect restorations.</description><identifier>ISSN: 0022-3913</identifier><identifier>ISSN: 1097-6841</identifier><identifier>EISSN: 1097-6841</identifier><identifier>DOI: 10.1016/j.prosdent.2023.08.036</identifier><identifier>PMID: 37802737</identifier><language>eng</language><publisher>United States: Elsevier Inc</publisher><subject>Computer-Aided Design ; Dental Prosthesis Design - methods ; Denture Design - methods ; Humans ; In Vitro Techniques ; Models, Dental ; Printing, Three-Dimensional ; Stereolithography ; Tooth Root - anatomy & histology</subject><ispartof>The Journal of prosthetic dentistry, 2025-01, Vol.133 (1), p.178-183</ispartof><rights>2024 Editorial Council for The Journal of Prosthetic Dentistry</rights><rights>Copyright © 2024 Editorial Council for The Journal of Prosthetic Dentistry. Published by Elsevier Inc. All rights reserved.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c283t-cce352ff12445e3f367b8ec4fb47dc49b11539a43d3eb1e1e7bfc7dccc34d9953</citedby><cites>FETCH-LOGICAL-c283t-cce352ff12445e3f367b8ec4fb47dc49b11539a43d3eb1e1e7bfc7dccc34d9953</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0022391323006066$$EHTML$$P50$$Gelsevier$$Hfree_for_read</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/37802737$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Azpiazu-Flores, Francisco X.</creatorcontrib><creatorcontrib>Johnston, William M.</creatorcontrib><creatorcontrib>Mata-Mata, Severino J.</creatorcontrib><creatorcontrib>Yilmaz, Burak</creatorcontrib><title>Positional trueness of three removable die designs with different root geometries manufactured using stereolithographic 3D printing</title><title>The Journal of prosthetic dentistry</title><addtitle>J Prosthet Dent</addtitle><description>Three-dimensional (3D) printed casts are a suitable alternative to dental stone casts. Contemporary dental design computer programs permit designing definitive casts with removable dies with different root geometries and retention mechanisms. Studies on the positional trueness of 3D printed removable dies with different root geometries are lacking.
The purpose of this in vitro study was to investigate the 3D displacements of three 3D printed removable die designs with different root geometries.
The digital file of a dental stone alveolar cast with root-form removable dies (MOD UJ IV Fixed Prosthetics; Ivoclar AG) was used as a reference to create 3 removable die and alveolar cast designs (Root Form, RF; Conical, CON; Cylindric, CYL) with different root geometries in 2 dental design computer programs (DentalCAD 3.1 Rijeka; exocad; GmbH; InLab CAD 22.0; Dentsply Sirona). 3 equidistant Ø1-mm spheres (C, Cervical; M, Middle; O, Occlusal) were designed on the buccal surface of the coronal portion of the removable die to evaluate their displacement. A total of 45 alveolar casts with 45 removable dies were fabricated using a stereolithographic 3D printer (Form 3; Formlabs); each die group consisted of 15 specimens. After fabrication and postprocessing, the specimens were scanned, and their digital files were analyzed in a metrology-grade computer program to evaluate the displacement of the removable dies with respect to the position of the die in the master reference file. Subsequently, the data were analyzed using a 3-way analysis of variance (ANOVA) followed by step-down Bonferroni-corrected pairwise comparisons (α=.05).
Two statistically significant 2-way interactions were detected between the independent variables, die design and direction (P<.001), and location and direction (P<.001). The post hoc analysis identified significant differences between the displacement values of RF and CYL (P<.001) and RF and the CON (P<.001) designs on the Y axis. The measured displacements were statistically different between the C and O locations on the Y axis (P=.001) and the M and O locations on the Z axis (P=.006).
The root geometry of a 3D printed removable die and alveolar cast can affect seating, and variable degrees of tipping of the removable die can be seen. The seating and congruence of the removable die with the interocclusal space and relationships observed intraorally should be confirmed before adjusting indirect restorations.</description><subject>Computer-Aided Design</subject><subject>Dental Prosthesis Design - methods</subject><subject>Denture Design - methods</subject><subject>Humans</subject><subject>In Vitro Techniques</subject><subject>Models, Dental</subject><subject>Printing, Three-Dimensional</subject><subject>Stereolithography</subject><subject>Tooth Root - anatomy & histology</subject><issn>0022-3913</issn><issn>1097-6841</issn><issn>1097-6841</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2025</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkc1u3CAUhVHVqpmkfYWIZTd2-LOxd63StKk0Urto1wjDZYaRDVPAibrOi4dokm6zQEjc73DgHIQuKWkpof3VoT2mmC2E0jLCeEuGlvD-DdpQMsqmHwR9izaEMNbwkfIzdJ7zgRAydJK-R2dcDoRJLjfo4VfMvvgY9IxLWiFAzjg6XPYJACdY4p2eZsDW1wXZ70LG977s64FzkKo_TjEWvIO4QEkeMl50WJ02ZU1g8Zp92OFcKhrnqou7pI97bzD_io_Jh1LHH9A7p-cMH5_3C_Tn283v69tm-_P7j-sv28awgZfGGOAdc44yITrgjvdyGsAINwlpjRgnSjs-asEth4kCBTk5UyfGcGHHseMX6NPp3hrd3xVyUYvPBuZZB4hrVmyQgvWSj6yi_Qk1NeWcwKn62EWnf4oS9VSAOqiXAtRTAYoMqhZQhZfPHuu0gP0ve0m8Ap9PANSf3nlIKhsPwYD1CUxRNvrXPB4BFJ2flQ</recordid><startdate>202501</startdate><enddate>202501</enddate><creator>Azpiazu-Flores, Francisco X.</creator><creator>Johnston, William M.</creator><creator>Mata-Mata, Severino J.</creator><creator>Yilmaz, Burak</creator><general>Elsevier Inc</general><scope>6I.</scope><scope>AAFTH</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>202501</creationdate><title>Positional trueness of three removable die designs with different root geometries manufactured using stereolithographic 3D printing</title><author>Azpiazu-Flores, Francisco X. ; Johnston, William M. ; Mata-Mata, Severino J. ; Yilmaz, Burak</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c283t-cce352ff12445e3f367b8ec4fb47dc49b11539a43d3eb1e1e7bfc7dccc34d9953</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2025</creationdate><topic>Computer-Aided Design</topic><topic>Dental Prosthesis Design - methods</topic><topic>Denture Design - methods</topic><topic>Humans</topic><topic>In Vitro Techniques</topic><topic>Models, Dental</topic><topic>Printing, Three-Dimensional</topic><topic>Stereolithography</topic><topic>Tooth Root - anatomy & histology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Azpiazu-Flores, Francisco X.</creatorcontrib><creatorcontrib>Johnston, William M.</creatorcontrib><creatorcontrib>Mata-Mata, Severino J.</creatorcontrib><creatorcontrib>Yilmaz, Burak</creatorcontrib><collection>ScienceDirect Open Access Titles</collection><collection>Elsevier:ScienceDirect:Open Access</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>The Journal of prosthetic dentistry</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Azpiazu-Flores, Francisco X.</au><au>Johnston, William M.</au><au>Mata-Mata, Severino J.</au><au>Yilmaz, Burak</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Positional trueness of three removable die designs with different root geometries manufactured using stereolithographic 3D printing</atitle><jtitle>The Journal of prosthetic dentistry</jtitle><addtitle>J Prosthet Dent</addtitle><date>2025-01</date><risdate>2025</risdate><volume>133</volume><issue>1</issue><spage>178</spage><epage>183</epage><pages>178-183</pages><issn>0022-3913</issn><issn>1097-6841</issn><eissn>1097-6841</eissn><abstract>Three-dimensional (3D) printed casts are a suitable alternative to dental stone casts. Contemporary dental design computer programs permit designing definitive casts with removable dies with different root geometries and retention mechanisms. Studies on the positional trueness of 3D printed removable dies with different root geometries are lacking.
The purpose of this in vitro study was to investigate the 3D displacements of three 3D printed removable die designs with different root geometries.
The digital file of a dental stone alveolar cast with root-form removable dies (MOD UJ IV Fixed Prosthetics; Ivoclar AG) was used as a reference to create 3 removable die and alveolar cast designs (Root Form, RF; Conical, CON; Cylindric, CYL) with different root geometries in 2 dental design computer programs (DentalCAD 3.1 Rijeka; exocad; GmbH; InLab CAD 22.0; Dentsply Sirona). 3 equidistant Ø1-mm spheres (C, Cervical; M, Middle; O, Occlusal) were designed on the buccal surface of the coronal portion of the removable die to evaluate their displacement. A total of 45 alveolar casts with 45 removable dies were fabricated using a stereolithographic 3D printer (Form 3; Formlabs); each die group consisted of 15 specimens. After fabrication and postprocessing, the specimens were scanned, and their digital files were analyzed in a metrology-grade computer program to evaluate the displacement of the removable dies with respect to the position of the die in the master reference file. Subsequently, the data were analyzed using a 3-way analysis of variance (ANOVA) followed by step-down Bonferroni-corrected pairwise comparisons (α=.05).
Two statistically significant 2-way interactions were detected between the independent variables, die design and direction (P<.001), and location and direction (P<.001). The post hoc analysis identified significant differences between the displacement values of RF and CYL (P<.001) and RF and the CON (P<.001) designs on the Y axis. The measured displacements were statistically different between the C and O locations on the Y axis (P=.001) and the M and O locations on the Z axis (P=.006).
The root geometry of a 3D printed removable die and alveolar cast can affect seating, and variable degrees of tipping of the removable die can be seen. The seating and congruence of the removable die with the interocclusal space and relationships observed intraorally should be confirmed before adjusting indirect restorations.</abstract><cop>United States</cop><pub>Elsevier Inc</pub><pmid>37802737</pmid><doi>10.1016/j.prosdent.2023.08.036</doi><tpages>6</tpages><oa>free_for_read</oa></addata></record> |
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| ispartof | The Journal of prosthetic dentistry, 2025-01, Vol.133 (1), p.178-183 |
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| subjects | Computer-Aided Design Dental Prosthesis Design - methods Denture Design - methods Humans In Vitro Techniques Models, Dental Printing, Three-Dimensional Stereolithography Tooth Root - anatomy & histology |
| title | Positional trueness of three removable die designs with different root geometries manufactured using stereolithographic 3D printing |
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