(PR32) Restoring Endodontic Access Openings Through Full Coverage Restorations: A Survey on Considerations for Modern Restorative Materials

A plethora of ceramic biomaterials are currently available to the practicing dentist for full coverage restorations. Restoring endodontic access openings through all-ceramic restorations using inadequate bonding protocols may contribute to coronal leakage which might compromise endodontic treatment outcomes. A cross-sectional survey study was conducted to investigate the knowledge, attitudes, training, and practice of active members of the American Association of Endodontists (AAE) regarding restoring access openings through all-ceramic restorations. A 30-question, multiple-choice anonymous survey was constructed and distributed electronically using Qualtrics to active members of the AAE (n=3962). The survey was available for one month with a reminder email sent two weeks after the initial invitation. Statistical analysis consisted of descriptive, univariable, and stepwise multivariable logistic regression. The survey response rate was 9.1% (359/3,962). Nearly 90% of respondents restore access preparations through all-ceramic restorations. Resin-based composite was the most frequently used material (87.9%) with 35.6% of composite users reporting use of a bonding protocol specific to the type of all-ceramic material. The final multivariable logistic regression model revealed that respondents who received training on handling all-ceramic materials (OR=2.29; p=0.015), verified material identity (OR=12.06; p< 0.001), and practiced in an academic setting (OR=5.28; p=0.002; reference: owner/partner) were more likely to use material dependent bonding procedures. Most respondents do not currently follow a bonding protocol based on material type. Practicing in academics, receiving training on management of all-ceramic materials, and verifying material identity were positively correlated with following material dependent bonding protocols.