With the score at 8-6 to Dott, the pair resumed at 10:30pm after they failed to conclude the contest in the allocated time earlier on Monday at the Crucible.
Ebdon started well but was punished for a wayward blue into the corner pocket, and Dott took his chance in clinical fashion.
Dott was in ruthless form and did not allow the 2002 champion a look-in as he sealed his place in the last 16 with a stunning century break.
In a repeat of the 2006 World Championship final which Dott won 18-14, the Scotsman managed to pinch the final two frames of the second session to quell the Ebdon comeback after he had recovered from trailing 6-2 overnight to level at 6-6.
Ebdon looked certain to move 7-6 clear, but Dott managed to come up with the snooker he required before stealing the frame on the black.
A run of 50 paved the way for Dott to win the 14th frame as Ebdon missed an easy red with the rest late in the frame. Dott unearthed a fine double on a red to a centre pocket to finish off the business at hand.
FIRST SESSION REPORT
Graeme Dott built a healthy 6-2 lead over Peter Ebdon in the first session of their first round World Championship match at the Crucible.
A turgid morning saw Dott take a well-deserved 3-1 advantage to the mid-session interval as Ebdon struggled for any sort of fluency.
Dott took the first frame courtesy of a 60 break and ground out the second 65-11 but Ebdon re-grouped and managed to cut the arrears by winning a scrappy third frame on the pink.
Two half-century plus breaks of 52 and 55 in the fourth frame ensured that Dott went to the mid-session interval with a two-frame advantage.
Ebdon, the 2002 winner of the tournament, was horribly out of sorts but it is testament to his grit that he won the fifth frame. However, he could not prevent Dott taking the next 66-12, which was again a scrappy affair.
The 2006 Crucible winner then made a break of 70 to seal the penultimate frame and take firm control of the session and he managed to come out on top in the last frame of the session after a tense safety exchange to lead by four.