Did his artificial hips put him at risk of infection when he saw the dentist?

https://www.washingtonpost.com/national/health-science/did-his-artificial-hips-put-him-at-risk-of-infection-when-he-saw-the-dentist/2016/10/07/1a0d4b54-60a5-11e6-9d2f-b1a3564181a1_story.html