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Cost benefit analysis of direct posterior restorations
Author(s) -
Hendriks F. H. J.,
Letzel H.,
Vrijhoef M. M. A.
Publication year - 1985
Publication title -
community dentistry and oral epidemiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.061
H-Index - 101
eISSN - 1600-0528
pISSN - 0301-5661
DOI - 10.1111/j.1600-0528.1985.tb00448.x
Subject(s) - medicine , amalgam (chemistry) , dentistry , analysis of variance , orthodontics , composite number , mathematics , algorithm , chemistry , electrode
A clinical study was conducted in which three operators made 232 Class I and Class II composite and amalgam restorations in a group of 49 adult patients. The time for different parts of the operative process was measured. The lime periods were analysed as to the influence of the factors operator, tooth type and number of surfaces , by an analysis of variance (ANOVA). Results show that the various factors have a significant influence on the total treatment time. The treatment time for amalgam restorations is equal to the treatment lime of composite restorations. The productivity of making restorations from the ‘best’ available amalgams, i.e. the amalgam with an extrapolated half‐life time of more than 20 yr, turns out to be more than 3–4 times better than that of the ‘worst’ amalgams (half‐life time 41/2–8 yr) and more than two times better than that of making restorations of the best composite material, used in this study (extrapolated half‐life time of Estic MF is 10 yr).