Re: /t/ and /d/ before an “interdental” consonant
I'm afraid not. /θ/ and /đ/ may be produced interdentally by some speakers but, particularly in BrE, they are normally dental, the tip of the tongue making light contact with the upper incisors.
Originally Posted by probus
/t/ or /d/ are not normally dental in English. The tip or blade of the tongue makes contact with the alveolar ridge. When followed by /θ/ and /đ/ (whether these are produced dentally or interdentally), /t/ or /d/ are normally produced dentally.
When a dental consonant such as /t/ or /d/ ...
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