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REGISTRATION OF ORTHODONTIC DIGITAL MODELS
Craniofacial Growth Series
|November 10, 2015
Summary
Digital models offer reliable methods for orthodontic assessment. Registering independently scanned models and superimposing final models onto pre-treatment setups are reproducible procedures, enhancing digital orthodontics.
Area of Science:
- Orthodontics
- Digital dentistry
- Biomedical engineering
Background:
- Traditional orthodontic outcome assessment relies on photographs, cephalometrics, and dental casts.
- Digital models present advantages in storage, spatial registration, and superimposition capabilities.
- Assessing the reliability of digital model procedures is crucial for clinical adoption.
Purpose of the Study:
- To determine the reproducibility of establishing occlusion for independently scanned digital models.
- To assess the reliability of registering post-treatment digital models to pre-treatment digital setups.
Main Methods:
- Two independent samples of five patient digital models were used for assessment.
- Three replicate positionings per patient were created for each experimental condition.
- Variability was evaluated using maximum surface difference and standard deviation of surface distances.
Main Results:
- Registering independently scanned digital models to a scanned occlusal surface is reliable.
- Surface-to-surface registration of final orthodontic digital models to planned setup models is reproducible.
Conclusions:
- Digital model procedures for occlusion establishment and treatment outcome registration are reliable.
- These findings support the clinical utility of digital models in orthodontics.
