Dental fear is common, and it is nothing to be embarrassed about
If the thought of a dental appointment makes your chest tighten, you are in very ordinary company. A systematic review that pooled 31 population studies covering 72,577 adults estimated that around 15 percent of adults have dental fear and anxiety, with about 12 percent reporting it at a high level and around 3 percent at a severe level, and it was more common among women and among younger adults.[1] Whatever number you would give yourself, this is a normal human response and not a weakness.
There is a quieter part of this that people rarely say out loud. An analysis of dental attendance in a representative adult survey found that feelings of shame were associated with higher dental anxiety, and that higher dental anxiety was associated with attending less often.[2] That is the loop which keeps people away for years, and it is worth naming plainly, because nobody here is going to lecture you about it.