Reliability of Linear Measurements on a Virtual Bilateral Cleft Lip and Palate Model
| Autor: | Barbara C M Oosterkamp, Majelle Rutenfrans, Pieter U. Dijkstra, Wicher J. van der Meer |
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| Rok vydání: | 2006 |
| Předmět: |
Models
Anatomic Virtual model Post hoc Cephalometry Intraclass correlation Cleft Lip Dentistry User-Computer Interface 03 medical and health sciences 0302 clinical medicine Maxilla Humans Medicine 030223 otorhinolaryngology Reliability (statistics) Observer Variation Orthodontics business.industry Lasers Infant Newborn Reproducibility of Results 030206 dentistry Congenital cleft Cleft Palate Otorhinolaryngology Bilateral cleft lip Calipers Oral Surgery Congenital disease business Software |
| Zdroj: | The Cleft Palate-Craniofacial Journal. 43:519-523 |
| ISSN: | 1545-1569 1055-6656 |
| DOI: | 10.1597/05-078 |
| Popis: | Objective: To assess the reliability and validity of measurements performed on three-dimensional virtual models of neonatal bilateral cleft lip and palate patients, compared with measurements performed on plaster cast models. Materials and Methods: Ten high-quality plaster cast models of bilateral cleft lip and palate patients were scanned with an LDI-scanner to obtain a three-dimensional virtual model. Linear measurements were performed on the plaster cast models using a digital caliper and also on the three-dimensional virtual model using Viscam RP version 2.1 software. The measurements were performed by two observers on two occasions. Results: Intraclass correlations ranging from .81 to .96 were found for all measurements except the measurement between the constructed reference point pr and reference point i (intraclass correlation = .40). A post hoc procedure in which top-view screen prints of the three-dimensional virtual model were used to perform the measurement between reference points pr and i demonstrated an intraclass coefficient of .90. Conclusions: Three-dimensional virtual models obtained by laser scanning neonatal cast models of bilateral cleft lip and palate patients can be used reliably and validly to perform linear measurements between existing reference points on the surface of the model using Viscam RP version 2.1 software. Measurements between reference points constructed outside the surface of the model cannot be validly performed on the three-dimensional virtual model with the software used in this study. For these measurements, top-view screen prints of the three-dimensional virtual model can be used. |
| Databáze: | OpenAIRE |
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