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Development of new artificial models for splint rigidity evaluation.

Christine Berthold¹, Friedrich Johannes Auer, Sergej Potapov

¹Dental Clinic 1-Operative Dentistry and Periodontology, Friedrich-Alexander-University, Erlangen, Germany. berthold@dent.uni-erlangen.de

Dental Traumatology : Official Publication of International Association for Dental Traumatology

|May 28, 2011

Summary

This summary is machine-generated.

New artificial models effectively evaluate dental splint rigidity and tooth mobility using the acid-etch technique. The straight model offers superior working time compared to the round model.

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Area of Science:

Dental materials science
Biomechanical engineering
Oral rehabilitation

Background:

Dental trauma often leads to tooth mobility, necessitating stabilization through splinting.
Evaluating the rigidity and effectiveness of different splinting materials and techniques is crucial for successful treatment.
Existing in vitro models may not fully replicate clinical scenarios of tooth loosening and splint application.

Purpose of the Study:

To develop and assess artificial models for in vitro evaluation of dental splint rigidity.
To simulate traumatically loosened teeth and test the acid-etch technique for splint application.
To compare the performance of two wire-composite splints (WCS1 and WCS2) on different model configurations.

Main Methods:

Manufactured straight and half-round arch bar models with bovine tooth facets.
Assessed tooth mobility using the Periotest method before and after splinting.
Applied two types of wire-composite splints (WCS1 and WCS2) to the models and calculated the relative splint effect (SpErel).
Evaluated working times and analyzed data using statistical tests (Student's t-test, Mann-Whitney U-test) with Bonferroni correction.

Main Results:

Differences in relative splint effect were observed between splint types and model configurations, particularly for tooth 21 with WCS2 (P < 0.008).
Both incisors and model types showed significant differences when comparing splints within one model type (P < 0.008).
The straight model required significantly less working time (P < 0.05).

Conclusions:

The developed artificial models are suitable for in vitro splint rigidity evaluation, allowing for acid-etch technique application and adjustable tooth mobility.
WCS1 demonstrated more flexibility compared to the rigid WCS2.
Results from the straight and round models were largely comparable, but the straight model proved more efficient in terms of working time.