A computer-programmed osteotomy package was used to measure agreed values from lateral cephalograms preoperatively , postoperatively, and during the follow-up period. The variable representing the postoperative cephalometric analysis predicted by the program was included for further comparisons. The results were used to measure the degree of dental and skeletal relapse during the follow-up period, but only the dental relapse is discussed in the present study. There was a statistically significant proclination of the maxillary anterior teeth postoperatively that continued during the mean follow-up period of 16 months.