Abstract
We aimed to ascertain whether there are any early differences in outcome between all
titanium temporomandibular joint (TMJ) prostheses in patients allergic to metal and
standard cobalt–chromium prostheses in patients not allergic to metal. All patients
who had primary TMJ prostheses placed with one-year follow-up between March 2003 and
February 2011 were included. We reviewed the basic characteristics of patients. The
outcome variables measured included disease, pain, mouth opening, and diet. A total
of 55 patients with 77 joint replacements fulfilled the inclusion criteria. Forty
patients had standard cobalt–chromium alloy (Co–Cr–Mo) prostheses (20 unilateral and
20 bilateral), and 15 had all titanium prostheses (13 unilateral and 2 bilateral).
Osteoarthritis was the most common disease in both groups. There was significant improvement
in pain score at reviews at 6 weeks (p = 0.001) and 12 months (p = 0.03). Values between groups were not significant (p = 0.48 at 6 weeks, and p = 0.10 at 1 year). Mouth opening in each group improved significantly with continued
gains between assessments at 6 weeks and 12 months (p = 0.001) but there were no significant differences between groups. Diet scores were
significantly improved one year postoperatively in both groups (p = 0.001), but differences between groups were not significant (p = 0.90). At one year, outcomes for all titanium prostheses in patients allergic to metal
were similarly favourable to those in patients who had no hypersensitivity to metal
and had standard prostheses. No patient developed a hypersensitivity reaction, and
no all titanium prosthesis failed during the one-year follow-up period.
Keywords
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Article info
Publication history
Published online: March 25, 2013
Accepted:
February 4,
2013
Identification
Copyright
© 2013 The British Association of Oral and Maxillofacial Surgeons. Published by Elsevier Inc. All rights reserved.
