Using Premiere 2 to create a DVD, especially a long 2 hour one, can cause quality issues because Premiere does not do Dolby audio encoding and PCM requires 1.2 mbps over Doldy.
Export from Premiere as Mpeg 2 DVD, 2 pass VBR, Minimum=2mbps, Target=4.4 mbps, Maximum= 7 mbps.
The results will create 2 files, video and audio, bring both into Encore and author. Encore can do Dolby.