89.1% of FPD impressions had errors.

Quoting snippets from the online abstract Aug 2005 edition of JPD .

Volume 94, Issue 2, Pages 112-117 (August 2005)

A clinical evaluation of fixed partial denture impressions

Material and methods

A total of 193 FPD impressions were evaluated, immediately after arrival at 11
dental laboratories, by 3 calibrated examiners

Results
Of the impressions, 89.1% had 1 or more observable errors. Significant
correlations were found between material type and voids or tears at the finish
line (Rv=0.17, P<.025) and between material type and polymerization problems
(Rv=0.223, P<.004).

Conclusions
Within the limitations of this study, impressions made with polyethers had the
most detectable errors, followed by condensation-type silicones. The high
frequency of detectable errors found in impressions sent for FPD fabrication is
of concern.



Reminds me of why I became a Denturist and possibly why Steve Mancuso is so fond
of his CEREC


--
Roy
rem NADA to reply




.

Quantcast