Digital Treatment Planning

Digital Treatment Planning in Orthodontics: What Studies Show Are the Benefits

Digital orthodontics has significantly transformed diagnostics and treatment planning in recent years. Intraoral scanners, digital models, and 3D analysis software now enable precise, efficient, and clear planning of orthodontic treatments. The scientific literature highlights advantages particularly in the areas of documentation, reproducibility, patient comfort, and efficiency. (ScienceDirect)

3D Scanners: Convenient and Accurate Enough for Planning

Systematic reviews of intraoral scanners in orthodontics reach a clear conclusion: Digital scans save time, are often more comfortable for patients than conventional impressions, and demonstrate good to very good reproducibility. The available evidence indicates that they are sufficiently accurate for orthodontic treatment planning as well as for aligner-related applications. (ScienceDirect)

This is particularly relevant in everyday dental practice: Instead of traditional impressions, digital data sets are immediately available and can be archived, processed further, and used directly for follow-up checks or patient consultations. This combination of convenience and digital accessibility is one of the most important practical advantages of modern diagnostics. (ScienceDirect)

Digital Model Analysis: Precise and Efficient

The evidence is also positive for model analysis. A systematic review with a meta-analysis showed no statistically significant differences between measurements taken on traditional plaster models and digital models for key orthodontic parameters such as intercannine width, intermolar width, overjet, and overbite. This means that digital models can be used reliably for diagnostic purposes. (European Journal of Orthodontics)

Another advantage is efficiency: A validation study published in 2025 on a partially automated 3D model analysis using^{OnyxCeph3TM-3D} showed only minor deviations of up to 0.3 mm compared to manual measurements, which were deemed clinically irrelevant. At the same time, the digital analysis saved a significant amount of time. (Springer Link)

Digital planning improves clarity and traceability

The practical benefit of digital treatment planning lies not only in individual measurements. Digital data sets make it easier to compile findings in a structured manner, evaluate models in three dimensions, document treatment goals, and clearly illustrate changes over time. This is a real advantage, particularly in orthodontics, because tooth position, arch form, and space conditions can be better visualized in a three-dimensional context. These strengths are indirectly supported by the high reproducibility and reliability of digital models. (ScienceDirect)

OnyxCeph: Useful for Evaluation and Digital Model Analysis

For OnyxCeph itself, the evidence of high performance specific to the product is more limited than for general digital methods. However, one thing can be clearly stated: OnyxCeph is used as software for 2D and 3D evaluation, documentation, and patient communication, and there is a recent validation study in which a 3D model analysis developed with OnyxCeph was described as accurate, efficient, and time-saving. This allows OnyxCeph to be scientifically and credibly classified as a valuable platform for digital orthodontic evaluation and model analysis. (OnyxCeph · Springer Link)

Conclusion

Current evidence suggests that digital treatment planning in orthodontics offers clear practical advantages. 3D scanners improve convenience and workflow, digital models are reliable for key measurements, and digital analysis software can make diagnosis and planning more efficient. For dental practices, this means greater clarity, better data availability, and modern, transparent treatment planning based on valid digital information. (ScienceDirect)