OPEN-SOURCE SOFTWARE IN DENTISTRY: A SYSTEMATIC REVIEW

Comparative Analysis between 3D-Printed Models Designed with Generic and Dental-Specific Software

With the great demand in the market for new dental software, the need has been seen to carry out a precision study for applications in digital dentistry, for which there is no comparative study, and there is a general ignorance regarding their applications. The purpose of this study was to investigate the accuracy differences between digital impressions obtained using generic G-CAD (general CAD) and D-CAD (CAD dental) software. Today, there is a difference between the design software used in dentistry and these in common use. Thus, it is necessary to make a comparison of precision software for specific and generic dental use. We hypothesized that there is no significant difference between the software for specific and general dental use.

METHODS

A typodont was digitized with an intraoral scanner and the models obtained were exported in STL format to four different softwares (Autodesk MeshMixer 3.5, Exocad Dental, Blender for dental, and InLAB). The STL files obtained by each software were materialized using a 3D printer. The printed models were scanned and exported in STL files, with which six pairs of groups were formed. The groups were compared using analysis software (3D Geomagic Control X) by superimposing them in the initial alignment order and using the best fit method.

RESULTS

There were no significant differences between the four analyzed software types; however, group 4, composed of the combination of D-CAD (Blender-InLAB), obtained the highest average (-0.0324 SD = 0.0456), with a higher accuracy compared to the group with the lowest average (group 5, composed of the combination of the Meshmixer and Blender models), a generic software and a specific software (0.1024 SD = 0.0819).

CONCLUSION

Although no evidence of significant difference was found regarding the accuracy of 3D models produced by G-CAD and D-CAD, combinations of groups where specific dental design software was present showed higher accuracy (precision and trueness). The comparison of the 3D graphics obtained with the superimposition of the digital meshes of the printed models performed with the help of the analysis software using the best fit method, replicating the same five reference points for the six groups formed, evidenced a greater tolerance in the groups using D-CAD.

In Vivo Analysis of Intraoral Scanner Precision Using Open-Source 3D Software

Intraoral three-dimensional scanning techniques could be used to improve dental practice, leading to an improved overall quality of the prosthetic devices and improved comfort for the patient. An accurate and precise intraoral scanner allows proper diagnosis, follow-up evaluation, and prosthesis application. The aim of this research is to evaluate the precision of an intraoral scanners (Medit i500, Medit Corp., Seoul, Korea), using open-source software in the digital workflow. The precision was compared through repetitions of the scanning process of the upper dental arch, following superimpositions in the whole 3D arch area. It was possible to display colorimetric maps for qualitative comparison, and the deviations of the values were classified as clinically acceptable. Within the limitation of this study, the clinically acceptable in vivo frequency of points’ deviation, or the precision, was obtained in 98.8% ± 1.4%; therefore, the use of open-source software can be a viable option in the digital workflow, improving patient follow ups with the 3D model superimposition.

Infobuttons for Genomic Medicine: Requirements and Barriers

OBJECTIVES

The study aimed to understand potential barriers to the adoption of health information technology projects that are released as free and open source software (FOSS).

METHODS

We conducted a survey of research consortia participants engaged in genomic medicine implementation to assess perceived institutional barriers to the adoption of three systems: ClinGen electronic health record (EHR) Toolkit, DocUBuild, and MyResults.org. The survey included eight barriers from the Consolidated Framework for Implementation Research (CFIR), with additional barriers identified from a qualitative analysis of open-ended responses.

RESULTS

We analyzed responses from 24 research consortia participants from 18 institutions. In total, 14 categories of perceived barriers were evaluated, which were consistent with other observed barriers to FOSS adoption. The most frequent perceived barriers included lack of adaptability of the system, lack of institutional priority to implement, lack of trialability, lack of advantage of alternative systems, and complexity.

CONCLUSION

In addition to understanding potential barriers, we recommend some strategies to address them (where possible), including considerations for genomic medicine. Overall, FOSS developers need to ensure systems are easy to trial and implement and need to clearly articulate benefits of their systems, especially when alternatives exist. Institutional champions will remain a critical component to prioritizing genomic medicine projects.

Analysis of the characteristics of periodontal curettes used for scaling the roof of the furcation by manual versus digital method

Abstract Introduction The treatment of periodontal disease in multiradicular teeth with furcation involvement is a challenge for dentists, with unpredictable results. Objective To evaluate the characteristics of the active tip of periodontal curettes used for scaling the furcation roof, comparing the manual versus digital method. Material and method Forty-two Pádua Lima (PL) curettes of the Millennium® brand (n = 6 for each model) were evaluated: PL 1-2, PL 3-4, PL 5-6, PLW 1-2, PLW 3-4, PLW 5 -6, and PLF. The following were measured: total length of the coronary face (CTc, millimeters, mm), total length of the lateral face (CTl, mm), width of the coronary face (Lc, mm), and width of the lateral face (Ll, mm). The measurements were performed in duplicate. Result The results showed that weight varied among the curettes (p <0.05), however the handle diameter was similar for all instruments (p> 0.05). Considering that seven different types of curettes were evaluated, the parameters of CTl and Ll showed a statistical difference for all evaluated curettes (7: 7 ratio), with higher values for the caliper method compared to the software (p <0.05). There was a statistically significant difference between assessment methods for CTc and Lc measurements (p <0.05), showing that there was a coincidence of values in the proportion of 4:7 for measurements of CTc and 5:7 for Lc. Conclusion The comparison between methods generally resulted in lower values and greater variation for the digital method, thus favoring the use of the manual method to measure the active tip of periodontal curettes.