Figure 2. Posterior expectations of the failure hazard rates of maxillary molar and incisor teeth. The dashed line corresponds to the 1960 cohort (n = 193), the thin solid line to the 1970 cohort (n = 1927), and the thick solid line to the 1980 cohort (n = 1952). The vertical lines correspond to the 95% pointwise credibility intervals (excluding the 1960 cohort due to small sample size). The panels A, C, E, and G represent boys, and B, D, F, and H girls. The panels A and B stand for second molars, C and D for first molars, E and F for lateral incisors, and G and H for central incisors. In the 1980 cohort, the risk of failure is constant, except in central incisors, and the age of the tooth thus does not affect the risk of failure. (Log-scale on the vertical axis ranges from 0.1 to 50.)
