Visual versus mechanical wear measurement of dental composite resin

M. M. Winkler*, E. P. Lautenschlager, A. Boghosian, E. H. Greener

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


This study compares a visual method for measuring composite wear with a relatively inexpensive mechanical technique. The visual measurements used a set of 17 graduated stone standards as the reference. Two sets of 10 unknown casts were evaluated. The first was a set of 10 stone replicas selected from the reference set in the range of 25-250 μm. The second set was composed of 10 casts of clinical restorations. The mechanical test employed a computer-controlled custom profilometer. Depth was recorded at 50 equidistant positions around the margin. A significant correlation was found (r > 0.98) between the visual and mechanical means for both measurement techniques. Mean values were equivalent for the standard casts. However, visual estimation of the clinical casts were significantly lower (61% of mechanical values) and thus not accurate for clinical use.

Original languageEnglish (US)
Pages (from-to)494-500
Number of pages7
JournalJournal of Oral Rehabilitation
Issue number7
StatePublished - Jul 1996

ASJC Scopus subject areas

  • Dentistry(all)


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