The International Phonetic Alphabet (IPA) does not have separate symbols for the alveolar consonants.
Rather, the same symbol is used for all coronal places of articulation that are not palatalized like English palato-alveolar sh, or retroflex.
The language may not make such distinctions, such that two or more coronal places of articulation are found allophonically, or the transcription may simply be too broad to distinguish dental from alveolar.
A few languages on Bougainville Island and around Puget Sound, such as Makah, lack nasals and therefore [n] but have [t].
In the Extensions to the IPA for disordered speech, they are transcribed with the alveolar diacritic on labial letters: ⟨m͇ p͇ b͇ f͇ v͇⟩.