Cephalometric values of sickle cell anaemia individuals in a Nigerian population.

Abstract

Objective: To establish cephalometric values in HbS individuals and compare with those of HbA individuals. Methods: Lateral cephalometric radiographs were taken for HbS and HbA participants and hard tissue tracings obtained manually on a 0.003-inch-thick cellulose acetate tracing paper over a light viewing box. Results: Sixty HbS and sixty HbA participants were recruited for the study. In group 1 (HbS) 29 (48.3%) of the participants were males, 31 (51.7%) females while in group 2 (HbA) 27 (45.0%) were males and 33 (55.0%) females. The mean age of the participants was 21.55 ± 2.55 years for the HbS group and 22.15 ±2.52 years for the HbA group. The mean SNA angle measured for the HbS participants was 85.66 ± 4.93 while SNB angle was 80.56 ± 4.41°. The ANB angle ranged between -3 and 10°. The HbS group had a mean ANB value of 5.10 ± 3.32°as compared to 3.93 ± 1.63° for the HbA group. Significant differences were observed between the mean SNB and ANB values in the HbS and HbA groups. The mean SNB for HbS was lower than that of HbA participants while mean ANB was higher