Sap Anthropometric Landmark: A Morphometric Orientation Point of the Nasal Tip.

The aim of the present study is to introduce a new anthropometric landmark (sap), parameter (sap-sap) for measuring a width of nasal tip and 7 new proportion indexes. For determinate data mean with standard deviation, 200 healthy individuals (100 men and 100 women) were included in the study. The authors determined and pointed 9 paired cranio-facial anthropometric landmarks: sap, al, ac, mf, en, ex, zy, ch, go. Measurement of the head and face included 9 linear horizontal parameters. Proportion indices expressed as the ratio of: nasal tip width/nose width index: sap-sap ×100/al-al; nasal tip width/nasal base width index: sap-sap ×100/ac-ac; nasal tip width/nasal root width index: sap-sap ×100/mf-mf; nasal tip width/biocular width index: sap-sap ×100/ex-ex; nasal tip width/intercanthal width index: sap-sap ×100/en-en; nasal tip width/face width index: sap-sap ×100/zy-zy; nasal tip width/mouth width index: sap-sap ×100/ch-ch. Statistical analysis of the data was carried out using the Student t test. The identification of the new anthropometric landmarks of the nasal tip, the measurements of the width between them, the calculation of proportions will help to evaluate the nasal tip.