Hello and thank you for using HCM.
I carefully read your question and I understand your concern.You shoud not worry I'll try to explain you something and give you my opinion.
We talk about
hypertension if we have mean value that exceeds 140 / 90 mmHg.A person might have high value during emotional and physical strees so its mandatory to judge on mean values during day and night.
In general hypertension does not give any symtoms. A person might have high values and not feel anything.
Leaving the hypertension untreated slowly modifies heart muscle so it is very important to intervene in time to treat it.
So in your case we have catch a value.It might be just becouse of strees being to the
dentist but it is important to follow it.
If I was your treating doctor, as you are over 50 it is necessary to make some examination like an electrocardiogram, a cardiac echo to evaluate heart function and walls, a full blood analyze and a holter pressure monitoring. This can give us a fool view of your values day and night and decide how to treat it if its necessary.
Hope I was helpful.Wish you good health.
Best regards.