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Titolo:
Three-dimensional cephalometry using individual skeletal laser technology models
Autore:
ZGraggen, M; Schiel, HJ; Kunz, C; Lambrecht, JT;
Indirizzi:
Univ Basel, Sch Dent Med, Dept Oral Surg Oral Radiol & Oral Med, CH-4056 Basel, Switzerland Univ Basel Basel Switzerland CH-4056 ral Med, CH-4056 Basel, Switzerland Univ Clin Basel, Kantonsspital, Unit Maxillofacial Surg, Clin Reconstruct Surg, Basel, Switzerland Univ Clin Basel Basel Switzerland Reconstruct Surg, Basel, Switzerland
Titolo Testata:
CLINICAL ANATOMY
fascicolo: 4, volume: 14, anno: 2001,
pagine: 258 - 268
SICI:
0897-3806(2001)14:4<258:TCUISL>2.0.ZU;2-3
Fonte:
ISI
Lingua:
ENG
Soggetto:
COMPUTED-TOMOGRAPHY; 3-DIMENSIONAL EVALUATION; FACIAL ASYMMETRY;
Keywords:
skull asymmetries; 3D stereolithography; 3D LTM Digitizer measuring system;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
25
Recensione:
Indirizzi per estratti:
Indirizzo: Lambrecht, JT Univ Basel, Sch Dent Med, Dept Oral Surg Oral Radiol & Oral Med, Hebelstr 3, CH-4056 Basel, Switzerland Univ Basel Hebelstr 3 Basel Switzerland CH-4056 Switzerland
Citazione:
M. Z'Graggen et al., "Three-dimensional cephalometry using individual skeletal laser technology models", CLIN ANAT, 14(4), 2001, pp. 258-268

Abstract

When planning operations on the facial skull, transversal asymmetries of the maxillomandibular complex cannot be adequately assessed using conventional two-dimensional (2D) x-ray cephalometry. On eight patients who presentedwith facial skull asymmetries, a three-dimensional (3D) laser technology model (LTM) using CT data was fabricated. Five sagittal plane points and sixsymmetry points were marked on the LTM, measured with the FlashPoint((R)) 3-D Digitizer and then geometrically converted, such that using the sagittal plane points, sella, basion, and nasion, a method could be developed thatallowed the localization of each spatial point in the three symmetry planes. Thus one could quantitatively record a patient's specific facial skull asymmetry in all three planes and a 3D measurement became feasible. Based onthe measurements, the asymmetry could be assessed with respect to the sagittal, vertical, and horizontal planes. With the 3-D LTM Digitizer measuringsystem, the surgeon now had precise numerical information regarding the symmetry ratios of the skull at his disposal, information that would have been difficult to evaluate solely using a model analysis. The results from this study show that our measuring system is applicable and useful for complexmaxillofacial asymmetries. The planning of surgical interventions was optimized because precise numerical values regarding the degree of the asymmetry were available. With the 3-D LTM Digitizer measuring system, cephalometric analysis of complex asymmetries in the three spatial planes can be pragmatically supported. (C) 2001 Wiley-Liss, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/01/20 alle ore 03:39:10