The fight lasted all 12 rounds.
The judges unanimously gave the victory to the 27-year-old Russian - 120: 108, 119: 109, 119: 109.
For Silyagin, this is the seventh victory in the professional ring in the absence of defeats.
Abdugofurov, in turn, suffered his first career defeat with 13 victories.
Earlier it was reported that Besputin defeated Plotnikov in the first fight after losing the title.