Clinical Evaluation of a New Liner/Base Material

Objectives: To evaluate the satisfaction with a novel liner/base material (EXP hybrid-RMGI, 3M) in a clinical evaluation.
Methods: The research was conducted via a web-based survey after EXP was shipped and used by a dentist during the trial period. Participants received one syringe of the EXP liner/base. Participants were asked to use EXP for liner/base application and as direct pulp capping material in their clinical routine following the instructions for use. 87 dentists from the USA participated in this evaluation during the testing period. Quantified responses were analyzed using descriptive statistics (Minitab18, Minitab Inc., USA).
Results: Overall approximately 1050 applications were placed, of which 840 were liner/base applications and 213 were direct pulp capping. Quantified responses on 5-level even-point-scales were statistically analyzed and are summarized in Table 1, with 5 being the most satisfied. Data showed that the acceptability of handling EXP was very high (91% for liner/base application; 98% for direct pulp capping use). The median value for dispensing the material from the syringe and for the appearance/esthetic of the final restoration was a rating of 5 (Table 1). As a result, 95 % of dentists stated they would recommend EXP to a colleague after participating in this clinical evaluation. Additionally, dentists rated the post-operative sensitivity of EXP the same (37% for liner/base; 37% for direct pulp capping) or better (63% for liner/base; 61% for direct pulp capping) in comparison to their preferred product.
Conclusions: Dentists stated high satisfaction levels with the handling and performance of the new liner/base material EXP and experienced similar or better post-operative sensitivity compared to their preferred product.