Document Detail

Analysis of errors in medical rapid prototyping models.
MedLine Citation:
PMID:  11936396     Owner:  NLM     Status:  MEDLINE    
Rapid prototyping (RP) is a relatively new technology that produces physical models by selectively solidifying UV-sensitive liquid resin using a laser beam. The technology has gained a great amount of attention, particularly in oral and maxillofacial surgery. An important issue in RP applications in this field is how to obtain RP models of the required accuracy. We investigated errors generated during the production of medical RP models, and identified the factors that caused dimensional errors in each production phase. The errors were mainly due to the volume-averaging effect, threshold value, and difficulty in the exact replication of landmark locations. We made 16 linear measurements on a dry skull, a replicated three-dimensional (3-D) visual (STL) model, and an RP model. The results showed that the absolute mean deviation between the original dry skull and the RP model over the 16 linear measurements was 0.62 +/- 0.35 mm (0.56 +/- 0.39%), which is smaller than values reported in previous studies. A major emphasis is placed on the dumb-bell effect. Classifying measurements as internal and external measurements, we observed that the effect of an inadequate threshold value differs with the type of measurement.
J Y Choi; J H Choi; N K Kim; Y Kim; J K Lee; M K Kim; J H Lee; M J Kim
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  International journal of oral and maxillofacial surgery     Volume:  31     ISSN:  0901-5027     ISO Abbreviation:  Int J Oral Maxillofac Surg     Publication Date:  2002 Feb 
Date Detail:
Created Date:  2002-04-08     Completed Date:  2002-07-03     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8605826     Medline TA:  Int J Oral Maxillofac Surg     Country:  Denmark    
Other Details:
Languages:  eng     Pagination:  23-32     Citation Subset:  D; IM    
Department of Oral and Maxillofacial Surgery, College of Dentistry, Seoul National University, Korea.
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MeSH Terms
Imaging, Three-Dimensional
Medical Errors*
Models, Anatomic*
Reproducibility of Results
Skull / anatomy & histology,  radiography
Tomography, X-Ray Computed

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