Twenty-five subjects, ages 28 to 67 years, took part in the study. Standard deviation was also calculated to determine the single error for each measurement. The measurements were repeated intrasurgically and compared with presurgical assessments. The overall standard deviation of single measurements was 0.732 mm. The agreement of replicate measurements of furcation degrees was excellent for buccal, lingual, and mesolingual furcations, but only moderate for distolingual furcation.
Statistical analysis is described.
The conclusions of this study show that there are no significant differences between furcation degrees as assessed presurgically and intrasurgically.