Cephalometric correlation between facial dimensions and sagital and vertical position of anterior teeth

Description of relationship between dental and skeletal parameters can help diagnosis and treatment of malocclusions. This study evaluated the relationship between facial height and vertical and sagital position of anterior teeth.

The lateral cephalogerams of 89 patients between ages of 14 to 18 years old were studied. The study casts were analyzed then samples were divided into 2 groups of with or without crowding. Cephalograms were traced and Pearson correlation was determined between parameters that explain facial dimensions and parameters that showed sagital and vertical position of anterior teeth.

High correlation was found between ANB and U1 to SN, U1 to FH, and U1 to NA (mm). SNB had also correlation with U1 to FH and U1 to SN. Additionally, Jaraback index showed a great correlation with L1 to MP, IMPA and SNB. FMA was similarly correlated with IMPA and FMIA. Significant correlation was detected between basal angle and IMPA (P <0.001). The remaining subjects did not have crowding and demonstrated high correlation between ANB and L1 to NB. SN-GoGn displayed a great correlation with SNB and FMIA. U1 to FH was highly correlated with FMA, SN-GoGn and L1 to MP. High correlation was observed between L1 to NB (mm) and L1 to MP (P<0.001).

There was correlation between the position of anterior teeth and facial dimensions that confirms the existence of balance between dentofacial parts. Therefore, establishment of equilibrium is essential for stability of treatment results.