According to Wikipedia the Turkish /n/ is dental, but it doesn't specify whether it's produced by the tip or the blade of the tongue.
1 Answer
Turkish grammars, like Turkish Grammar, 1976, by Robert Underhill or Turkish Grammar, 2nd edition, 2000, by Geoffrey Lewis, state that the Turkish /n/ is apical, produced with the tip of the tongue.
Also note that the Turkish letter n preceding the letters b and p is pronounced as [m] (e.g. İstanbul) and when n precedes the letters g or k it is pronounced as [ŋ] (e.g. Ankara).
