Abstract
Aim: To evaluate the accuracy and the validity of orthodontic diagnostic measurements, as well as virtual tooth transformations using a generic open access 3D software compared to OrthoAnalyzer (3Shape) software; which was previously tested and proven for accuracy. Methods: 40 maxillary and mandibular single arch study models were duplicated and scanned using 3Shape laser scanner. The files were imported into the generic and OrthoAnalyzer software programs; where linear measurements were taken twice to investigate the accuracy of the program. To test the accuracy of the program format, they were printed, rescanned and imported into OrthAnalyzer. Finally, to investigate the accuracy of editing capabilities, linear and angular transformation procedures were performed, superimposed and printed to be rescanned and imported to OrthoAnalyzer for comparison. Results: There was no statistically significant difference between the two groups using the two software programs regarding the accuracy of the linear measurements (p>0.05). There was no statistically significant difference between the different formats among all the measurements, (p>0.05). The editing capabilities also showed no statistically significant difference (p>0.05). Conclusion: The generic 3D software (Meshmixer) was valid and accurate in cast measurements and linear and angular editing procedures. It can be used for orthodontic diagnosis and treatment planning without added costs.
Highlights
Orthodontists are currently facing the challenge of continuous technological advancements in computer sciences
It is an undeniable fact that we currently live in an electronic era where the utilization of virtual models has become increasingly important in the orthodontic practice[2,14,15,16,17]
The availability of a well-established software has become crucial. This has been manifested by the abundance of a generous market; providing a rather noticeable number of well-established software programs, investigated for validity and accuracy, and capable of executing multifunctional tasks
Summary
Orthodontists are currently facing the challenge of continuous technological advancements in computer sciences. The availability of 3D orthodontic software programs has facilitated the study of maxillary, mandibular, intra-arch and inter-arch relations, as well as performing virtual setups and treatment plans[1,3,4]. Study models are crucial for orthodontic diagnosis and treatment planning. The recent use of digital casts has allowed for a wider scale of communication between orthodontists and easier marketing to attract patients without the need for a physical storage space[5]. In early 1999, the first digital system was introduced and nowadays many systems are commercially available[6]. This presence of different technologies calls for a proper standardization and the investigation of the accuracy of digital measurements compared to those on plaster study models. Many systems were evaluated; such as Digimodel,[4] O3DM7, OrthoCAD1 and 3shape OrthoAnalyzer[2,5,6], and were found to be as reliable and accurate as plaster models; which means that digital models can be considered as the new gold standard[5,8,9,10]
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