Is this word part of a sentence? If yes, could you please write the whole sentence, if possible with the one before and after? That would certainly help.

Schneidekante is definitely incisal edge (45000 google hits)

Maybe the following information helps (more info on the website):
Schneidekantendistanz
engl.: ***incisal edge distance***; vertikaler Abstand der Schneidekanten von Ober- und Unterkiefer. Normalerweise besteht eine Bandbreite der Mobilität des Unterkiefers bei der Mundöffnung zwischen 40 und 52 Millimetern und der Seitwärtsbewegung zwischen 10 und 13 Millimetern. Bei der physiologischen Mobilität ist das Verhältnis zwischen Seitwärtsbewegung und S. etwa 1 : 4.
http://www.zahnwissen.de/frameset_lexi.htm?lexikon_sa-sm.htm

I did not find too many references for "incisal edge distance" though. But one of them is the following:
Conclusion:
1. The average orbitale-maxillary incisal edge distance for the representative population used in this study was found to be significantly greater than the 30 mm incisal reference notch on the incisal guide pins of the Hanau articulators.
According to the present anatomic data, the incisal reference notch on Hanau articulators should be calibrated 47 mm below the condylar plane.
2. Due to the wide range of measurements recorded for the orbitale-maxillary incisal edge distance, it is suggested that the use of the orbital pointer when making the facebow transfer and adjusting the pointer 7 mm above the condylar plane of the articulator is the most accurate method of anatomically orienting the maxillary cast to the articulator.
[DOC]
Section 08 - Articulators II
File Format: Microsoft Word - View as HTML
Purpose: to determine the average orbitale-maxillary incisal edge distance and to compare this measurement to the incisal reference notch of the Hanau ...
http://www.bethesda.med.navy.mil/careers\postgraduate_ dental_school%5Cprosthodontics_residency%5Cliterature%5C... -

See also http://www.proz.com/kudoz/10630