A patient taking bisphosphonates has a diastema between teeth #8 and #9; tooth #8 has previously had root canal treatment. What is the most appropriate restorative approach to close the diastema?

Given tooth #8 has had root canal treatment (making it potentially more brittle and structurally compromised, especially if there was significant access cavity material loss), full crowns provide more comprehensive structural protection than veneers, which may not offer adequate strength/retention on a devitalized tooth. The bisphosphonate history is a more relevant consideration for any future BONE-involving procedures (like extractions or implant surgery) rather than directly changing this restorative material decision, which doesn't involve bone manipulation.