I have also been reading about Dianetics Bianca and Betty. I have found that Dianetics and Scientology are two different spiritual aspects.
Dianetics uncovers the source of unwanted sensations and emotions, accidents, injuries and psychosomatic illnesses, and sets forth effective handlings for these conditions. Further research into the spiritual aspects of Dianetics led to the discovery of Scientology.
Scientology, on the other hand, is the study and handling of the spirit in relationship to itself, to universes and to other life. Through the practice of Scientology one can increase his spiritual awareness and ability and realize his own immortality
Hope this helps?
Melanie
(Information obtained from The Church Of Scientology)