Čes. stomatol. Prakt. zub. lék. (Czech Dental Journal) 2001; 101(6): 196-200
Cephalometric Superimposition of X-rays with Longer Time-interval
- II. stomatologická klinika LF UP, Olomouc, přednosta prof. MUDr. M. Eber, CSc.
The changes in the SN line inclination during the growth esere studied in relation to time of observation. The superimposition of two age-different cephalometric headfilms on stable strnctures of the cranial base was performed. The extent of changes according the period of observation was investigated. The mean rotation of SN line 0.45° was in the group of patients with the period of observation less than 2 years, whereas in the group of patients with the period of observation more than 2 years the mean rotation of SN line was 1.60°. In the course of the facial growth, the ventrocaudal shift of the N point, even remodeling of sella turcica and dorsocranial shift of S point, in longer time-interval may occur.
Keywords: SN line; X-ray headfilms; superimposition
Published: December 1, 2001 Show citation
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