Application of rapid prototyping for temporomandibular joint reconstruction.
J Oral Maxillofac Surg
; 69(2): 432-8, 2011 Feb.
Article
en En
| MEDLINE
| ID: mdl-21094572
ABSTRACT
PURPOSE:
To introduce the preliminary application of rapid prototyping (RP) for temporomandibular joint (TMJ) surgery. MATERIALS ANDMETHODS:
This study included 11 consecutive patients (13 joints) seeking TMJ replacement. All patients had previously undergone 3-dimensional computed tomography (CT) scanning (0.625-mm slice thickness) of the craniofacial skeleton. The data from CT scanning in DICOM (Digital Imaging and Communications in Medicine) format were input into the interactive Simplant CMF software program (Materialise Medical, Leuven, Belgium). Preoperative planning included segmentation and osteotomies. The movements of the jaw bones were simulated by use of Simplant CMF. The affected mandible was reconstructed based on the contralateral side. Then, the titanium plate was shaped on the reconstructed model before surgery. The bone graft was transplanted by the shaped titanium plate during the operation to reconstruct the TMJ. Twenty-four patients who underwent traditional surgery were used as the control group. The operative time of the 2 groups was analyzed with the SPSS software package, version 13.0 (SPSS, Chicago, IL), with the Student t test. The data from CT scanning in the experimental group before and after surgery were compared by paired t test.RESULTS:
All the incisions healed primarily without any complications. All patients were satisfied with the operation, because of their symmetric faces and good occlusion. Postoperative magnetic resonance imaging confirmed the position of the transplanted costochondral cartilage in the glenoid fossa. A group t test showed that the operative time was longer in the control group (mean, 7.09 hours) than that in the RP group (mean, 5.67 hours). Three parameters (condyle-incisor, condyle-mental foramen, and condyle-angle) from the postoperative CT scan were analyzed by paired t test, and there was no significant difference between the 2 sides.CONCLUSION:
RP technology provides an advanced method for TMJ reconstruction that can make the TMJ reconstruction more accurate and symmetric, improve the mandible's function, and consequently, enhance the reconstructive effect.
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Articulación Temporomandibular
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Diseño Asistido por Computadora
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Procedimientos de Cirugía Plástica
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Modelos Anatómicos
Tipo de estudio:
Observational_studies
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Prognostic_studies
Límite:
Adolescent
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Adult
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Aged
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Revista:
J Oral Maxillofac Surg
Año:
2011
Tipo del documento:
Article
País de afiliación:
China