Vertex triangles

Hi,

is there any way to get triangles of each vertex? I know i can do the opposite (get triangle's vertices) by:

 for (int i = 0; i < mesh.triangles.Length; i += 3)
 {
     Vector3 p1 = mesh.vertices[mesh.triangles[i + 0]];
     Vector3 p2 = mesh.vertices[mesh.triangles[i + 1]];
     Vector3 p3 = mesh.vertices[mesh.triangles[i + 2]];
 }

But is there a way to do the opposite without going through all triangles collection looking for the same vertex index? I want to avoid the 75000++ loops.

Thanks!