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Technical Briefs

The Use of Stereolithography in Alveolar Reconstruction With Mandibular Block Bone Grafts

[+] Author and Article Information
S. L. Campanelli

Dipartimento di Ingegneria Meccanica e Gestionale,  Politecnico di Bari, Viale Japigia 182, Bari 70126, Italycampanel@poliba.it

L. A. De Filippis

Dipartimento di Ingegneria dell’Ambiente e per lo Sviluppo Sostenibile,  Politecnico di Bari, Viale del Turismo 8, Taranto 74100, Italyl.defilippis@poliba.it

A. D. Ludovico

Dipartimento di Ingegneria Meccanica e Gestionale,  Politecnico di Bari, Viale Japigia 182, Bari 70126, Italyludovico@poliba.it

A. Falco

Dipartimento di Scienze Odontostomatologiche,  Università di Chieti, Via dei Vestini 31, Chieti 66013, Italyfalco@unich.it

S. Tetè

Dipartimento di Scienze Odontostomatologiche,  Università di Chieti, Via dei Vestini 31, Chieti 66013, Italytete@unich.it

J. Manuf. Sci. Eng 130(2), 024502 (Mar 25, 2008) (3 pages) doi:10.1115/1.2899640 History: Received April 15, 2007; Revised February 22, 2008; Published March 25, 2008

Recently, stereolithography (SL), one of the most diffused techniques in the rapid prototyping area, has been used to realize surgical guides for the corrected positioning of dental grafts. This paper presents a methodology for the design and fabrication of stereolithographic surgical guides useful in alveolar reconstruction with mandibular block bone grafts. The integration between medical imaging techniques and SL was achieved. The surgical guides built with a SL machine were used as tools for surgical operations. This methodology allowed obtaining the maximum respect of the contiguous anatomical structures, the extraction of a limited amount of bone, a remarkable reduction of the operation time, and no alteration of teeth and inferior lip sensibility. The extraction and the positioning of onlay grafts within the chin resulted to be more precise and predictable using stereolithographic surgical guides.

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Copyright © 2008 by American Society of Mechanical Engineers
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Figures

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Figure 1

Preoperative identification of the extraction (1) and the receiving area (2)

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Figure 2

NURBS creation in MIMICS

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Figure 3

Distance between the points cloud generated from the 3D reconstruction and the surface deviation

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Figure 4

Extraction guide perfectly fitting on the jawbone (all measurements are in millimeters)

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Figure 5

(a) SL model of the graft guide in the receiving area; (b) extracted bone fitting the graft guide; (c) use of the graft guide during the surgical operation

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