Fracture strength of zirconia and lithium disilicate restorations following endodontic access.
Thomas J LucasNathaniel C LawsonBrandon EnglertKen GoldsteinRonald GoldsteinPublished in: Journal of esthetic and restorative dentistry : official publication of the American Academy of Esthetic Dentistry ... [et al.] (2021)
Conservative endodontic access openings in high-strength ceramic restorations do not have a negative effect on their static fracture load. The coarse zirconia-cutting diamond rotary instrument is more efficient and has a less detrimental effect on the strength of the crowns than a fine diamond rotary instrument.