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Clinical Oral Investigations

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Open Access 06-07-2023 | Research

A new CAD/CAM tooth mobility simulating model for dental in vitro investigations

Authors: Christoph J. Roser, Andreas Zenthöfer, Christopher J. Lux, Stefan Rues

Published in: Clinical Oral Investigations | Issue 9/2023

Abstract

Objectives

To validate a new tooth mobility simulating in vitro model for biomechanical tests of dental appliances and restorations.

Material and methods

Load-deflection curves for teeth in CAD/CAM models (n = 10/group, 6 teeth/model) of the anterior segment of a lower jaw with either low tooth mobility (LM) or high tooth mobility (HM) were recorded with a universal testing device and a Periotest device. All teeth were tested before and after different ageing protocols. Finally, vertical load capacity (F_max) was tested in all teeth.

Results

At F = 100 N load, vertical/horizontal tooth deflections before ageing were 80 ± 10 µm/400 ± 40 µm for LM models and 130 ± 20 µm/610 ± 100 µm for HM models. Periotest values were 1.6 ± 1.4 for LM models and 5.5 ± 1.5 for HM models. These values were within the range of physiological tooth mobility. No visible damage occurred during ageing and simulated ageing had no significant effect on tooth mobility. F_max values were 494 ± 67 N (LM) and 388 ± 95 N (HM).

Conclusion

The model is practical, easy to manufacture and can reliably simulate tooth mobility. The model was also validated for long-term testing, so is suitable for investigating various dental appliances and restorations such as retainers, brackets, dental bridges or trauma splints.

Clinical relevance

Using this in-vitro model for high standardised investigations of various dental appliances and restorations can protect patients from unnecessary burdens in trials and practice.

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Title: A new CAD/CAM tooth mobility simulating model for dental in vitro investigations
Authors: Christoph J. Roser
Andreas Zenthöfer
Christopher J. Lux
Stefan Rues
Publication date: 06-07-2023
Publisher: Springer Berlin Heidelberg
Published in: Clinical Oral Investigations / Issue 9/2023
Print ISSN: 1432-6981
Electronic ISSN: 1436-3771
DOI: https://doi.org/10.1007/s00784-023-05133-9

Keynote webinar | Spotlight on medication adherence

Springer Medicine

A new CAD/CAM tooth mobility simulating model for dental in vitro investigations

Abstract

Objectives

Material and methods

Results

Conclusion

Clinical relevance

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Objectives

Material and methods

Results

Conclusion

Clinical relevance

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