The b,d,g are aspirated (exploded, as you say). Compare the Hindi letters
प फ .... त थ ....ट ठ ....क ख
ब भ ....द ध ....ड ढ ....ग घ
The second consonant in each set in aspirated, unless I am very much mistaken.
b - भ d - ध g - घ (roughly; although from my recordings I'd put the English voiced consonants somewhere between the pair).
Also, the d is alveolar, not dental or retroflex.
You are probably saying ब for b, which is not really right at the beginning of a word. It has at least some aspiration.