Prospective study of five-year outcomes and postoperative complications after total temporomandibular joint replacement with two stock prosthetic systems

Publication date: Available online 8 November 2019Source: British Journal of Oral and Maxillofacial SurgeryAuthor(s): L.M. Gonzalez-Perez, B. Gonzalez-Perez-Somarriba, G. Centeno, C. Vallellano, J.F. Montes-Carmona, E. Torres-Carranza, J. Ambrosiani-Fernandez, P. Infante-CossioAbstractTo evaluate and compare outcomes and complications associated with reconstruction of the temporomandibular joint (TMJ), we prospectively analysed the data of 70 patients who had their joints replaced with stock prostheses during the period 2004-14 and who had been followed up for five years. We used two types of stock prostheses: the metal-on-metal Christensen system (CS), and the ultra-high-molecular-weight-polyethylene-on-metal Biomet® system (BS). Data were collected at 3, 6, 12, 24, 36, 48, and 60 months postoperatively and compared with preoperative measurements. Five years after the replacement there was an increase in mean (SD) mouth opening from 2.0 (0.6) to 4.0 (0.5 cm) (p = 0.012) in the CS, and from 2.5 (1.0) cm to 4.1 (0.6) cm (p = 0.018) in the BS. The mean (SD) reductions in visual analogue pain scores were from 6.9 (1.6) to 2.0 (1.4) (p = 0.001) in the CS, and 6.5 (1.4) to 1.5 (1.1) (p = 0.001) in the BS. There were no significant differences in improvements in mouth opening or reduction in pain between the two groups. However, there were differences in the number of implants that failed, which led to removal and replacement of 2/14 pr...
Source: British Journal of Oral and Maxillofacial Surgery - Category: ENT & OMF Source Type: research