Does Clinical Experience Affect Chairside Digital Waxing of Single Crowns More Than Software Training?

No‐Cortes, Juliana; Ayres, Ana Paula Almeida; Son, Andrea; Lima, Jacqueline Ferreira; Markarian, Roberto Adrian; Silva, Renan Lúcio Berbel da; Côrtes, Arthur Rodriguez Gonzalez

doi:10.11607/ijp.7838

Cited by 6 publications

(19 citation statements)

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“…Two studies showed superior overall fit and marginal fit for DLP 3D-printed crowns 69 and inlays, 70 respectively. The third study found no difference in the linear measurements but did find smaller 3D deviations for the milled crowns, 71 but it is important to note that that study used a low-cost LCD (liquid crystal display) 3D printer that is not commonly used in clinical dental practices.…”

Section: Definitive Restorationsmentioning

confidence: 94%

Clinical Applications of 3D-Printed Polymers in Dentistry: A Scoping Review

Anadioti,

Odaimi,

O'Toole

2024

Int J Prosthodontics

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The aim of this scoping review is to categorize 3D-printing applications of polymeric materials into those where there is evidence to support their clinical application and to list the clinical applications that require a greater evidence base or further development before adoption. Materials and Methods: An electronic search on PubMed, EMBASE, Scopus (Elsevier), and Cochrane Library databases was conducted, including articles written in English and published between January 2003 and September 2023. The search terms were: ((3D printing) OR (3-dimensional printing) OR (three dimensional printing) OR (additive manufacturing)) AND ((polymer) OR (resin)) AND (dent*). Case reports, in vitro, in situ, ex vivo, or clinical trials focused on applications of 3D printing with polymers in dentistry were included. Review articles, systematic reviews, and articles comparing material properties without investigation on clinical application and performance/ accuracy were excluded. Results: The search provided 3,070 titles, and 969 were duplicates and removed. A total of 2,101 records were screened during the screening phase, and 1,628 records were excluded based on title/abstract. In the eligibility phase, of the 473 full-text articles assessed for eligibility, 254 articles were excluded. During the inclusion phase, a total of 219 studies were included in qualitative synthesis. Conclusions: There is lack of clinical evidence for the use of 3D-printing technologies in dentistry. Current evidence, when investigating clinical outcomes only, would indicate non-inferiority of 3D-printed polymeric materials for applications including diagnostic models, temporary prostheses, custom trays, and positioning/ surgical guides/stents.

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Section: Definitive Restorationsmentioning

confidence: 94%

Clinical Applications of 3D-Printed Polymers in Dentistry: A Scoping Review

Anadioti,

Odaimi,

O'Toole

2024

Int J Prosthodontics

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“…All pairs of STL files of each crown (ie, virtual wax pattern and crown rescan) were imported to a 3D mesh analysis software (Inspect 2019, GOM), to be superimposed and compared for 3D deviation (trueness, measured in millimeters) within a 3D color map using the best-fit algorithm, following a previously described methodology. [5][6][7][8] Medians and ranges of 3D deviation values were obtained for proximal, occlusal, and cervical (at the coupling interface) surfaces used in the statistical analyses.…”

Section: Methodsmentioning

confidence: 99%

“…1,3 In the CAD phase, the two main factors are the CAD software program and the operator's level of expertise to digitally design a prosthesis with satisfactory clinical characteristics. [5][6][7] Nevertheless, the aforementioned references were CAD studies that did not assess the impact of each factor on marginal fit and clinical outcomes of the manufactured interim crowns.…”

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confidence: 99%

“…These have a higher production rate and lower costs than milling devices to produce interim single crowns. 8 On the other hand, single crowns produced with LCD 3D printers are generally more operator-sensitive 1 and less accurate than milling devices. 8,9 Information about the impact of the CAD phase on the final result of single crowns manufactured with low-cost LCD 3D printers is lacking.…”

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confidence: 99%

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Comparison of 3D-Printed Single Crown Outcomes Among Different Computer-Aided Design Software Programs

No-Cortes,

Attard,

Mifsud

et al. 2024

Int J Prosthodontics

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Purpose: Low-cost resin 3D printers have been used to produce affordable interim single crowns in public and private dental practices. The purpose of this study was to assess the impact of different computer-aided design (CAD) software programs on 3D trueness, microscopic marginal and internal gaps, time to design, and interproximal contacts of low-cost 3D-printed single crowns. Materials and Methods: This in vitro study was performed on a total of 90 standardized resin-prepared teeth adapted to a dental manikin. For comparison among CAD software programs, 45 tooth preparations received 3D-printed crowns designed with one of three CAD software programs by an experienced technician and identified as groups TRIOS (n = 15), EXOCAD (n = 15), and ZZ (Zirkonzahn; n = 15). To assess interoperator reproducibility, 15 additional crowns were designed by a dental clinician (group ZZ-DENT) and 15 by a dental prosthetic technician (group ZZ-PROS), both with basic 1-week CAD/CAM training. Finally, as a control group, 15 crowns were milled using a high-end five-axis milling device (group ZZ-CONTROL). Statistically significant differences for 3D trueness, microscopic gaps, time to design, and interproximal contacts among groups were assessed with the Kruskal-Wallis test. Results: No statistically significant differences in 3D trueness or marginal or internal gaps were found, either among different software programs or CAD operators (P > .05). However, Group TRIOS took significantly longer to design than EXOCAD and ZZ groups (P = .001). Less-experienced operators were significantly outperformed in time and interproximal contacts (P = .001) by the CAD technician using the same software program. Finally, control milled crowns (ZZ-CONTROL) significantly outperformed the respective 3D-printed copies (ZZ) in all assessed variables (P < .001). Conclusions: Different CAD software programs may affect the time required to design, but they do not significantly affect clinical outcomes of low-cost 3D-printed resin crowns if designed by an experienced CAD technician.

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“…On the other hand, there is controversy in the literature regarding comparisons between 3D-printed and milled resin restorations. A recent study found that a five-axis milling device is more accurate and faster but has a lower production rate and higher costs compared to a low-cost LCD 3D-printer to produce CAD-CAM dental crowns [28]. Nevertheless, another study on dental implants that compared a high-end DLP 3D-printer and a four-axis milling device found better adaptation for 3D-printed resin crowns compared to the milled and conventional crowns produced in the study [29].…”

mentioning

confidence: 99%