I would advise you to read the Limitation of the study In the BMJ Article.
I personally follow a Heart surgeon and my own Surgeon on something as important as this who has to deal with the devastation of Infective Endocarditis first hand compared to
NICE who implement Guidelines which is all they really are.
The limitation of the study in the link you provide is as follows I quote
"those perceived to be at highest risk of infective Endocarditis
It does not completely tackle the problem of whether a subset
Of patients particularly those with prosthetic heart valves or history of Infective Endocarditis might still benefit from Antibiotic Prophylaxis . To more directly answer the question a carefully designed randomized placebo controlled trial or Antibiotic Prophylaxis in these patients would be required."
As I have Prosthetic material myself an Annuloplasty Ring and others have Heart Valve replacements this comes under high risk In the NICE Guidelines and the American Heart Association.
So to err on the side of caution and take 3mg of Amoxicillin
Prior to Dental scale and Polish or extraction ionce or twice a year is worthwhile in my opinion.
check for high risk from Dental Procedures in this link
Content on HealthUnlocked does not replace the relationship between you and doctors or other healthcare professionals nor the advice you receive from them.
Never delay seeking advice or dialling emergency services because of something that you have read on HealthUnlocked.