The 30 year-old can now boast a 95% KO ratio following a 20th early finish from 21 starts, having only gone the distance with stubborn former world title challenger Edison Miranda back in July 2014.
Dorticos had initially been in line for the vacant ‘regular’ title until a protest from former light-heavyweight king Beibut Shumenov meant the Miami native’s clash with Kalenga was demoted to interim status.
For Congan Kalenga, the result means a third career loss and a second in his last three bouts, following a unanimous decision reverse to Denis Lebedev in Moscow just over a year ago.
In Colombia, lightweight star Darleys Perez recovered from his crushing defeat to current world champion Anthony Crolla in November to record a 33rd career victory and push himself back into contention at the top level.
Perez, 32, was dropped by a massive left hook to the body by Crolla in Manchester when bidding to claim the vacant WBA belt at 135 pounds at the second attempt after the pair shared a controversial draw four months earlier.
On this occasion, Perez had way too much in his locker for hapless compatriot Wegner Ortega and inflicted a 19th defeat on the 33 year-old in the second round for a first win in 16 months.