NeoPUTTY® Versus NeoMTA 2® as a Pulpotomy Medicament for Primary Molars: A Randomized Clinical Trial.

PURPOSE: The purpose of this randomized clinical trial was to evaluate the clinical and radiographic success of the premixed bioceramic (NeoPUTTY®) as pulpotomy medicament in primary molars in comparison to NeoMTA® 2. METHODS: Seventy primary molars indicated for pulpotomy in 42 children were randomly allocated into two groups: (1) a mineral trioxide aggregate (MTA) group (NeoMTA® 2); and (2) a premixed bioceramic group (NeoPUTTY®). Clinical and radiographic examinations of the molars following pulpotomy were conducted by two independent evaluators at six and 12 months. The data were analyzed using Fishe`s exact tests. RESULTS: At 12 months, the clinical and radiographic success for the MTA group were 100 percent (34 out of 34) and 94.1 percent (32 out of 34), respectively. For the NeoPUTTY® group, the clinical and radiographic success were 97.1 percent (34 out of 35) and 92.8 percent (32 out of 35), respectively. No significant differences were found between the two materials. CONCLUSIONS: NeoPUTTY® showed a comparable success to mineral trioxide aggregate in primary molar pulpotomies over 12 months. Further clinical trials with larger sample sizes and longer follow-up periods are recommended.

Evaluation of the Shear Bond Strength of Four Bioceramic Materials with Different Restorative Materials and Timings.

The objectives of this study were to evaluate the shear bond strength (SBS) of a resin composite (RC) and a resin-modified glass ionomer (RMGI) to four different bioceramic materials and to compare the effects of the immediate vs. delayed placement of restoration on the SBS. A total of 160 Teflon blocks and 40 blocks/material, were randomly filled with one of the bioceramic materials (NeoPUTTY®, NeoMTA2®, TotalFill® BC RRM™ Fast Set Putty, and ProRoot® MTA). The restoration was performed immediately or in a delayed time frame (after 7 days) using a Filtek™ Z350 XT Flowable composite (bonded to the bioceramic materials using Single bond universal 3M) or GC Fuji II LC® RMGI. The SBS test was performed at a crosshead speed of 1 mm/min, and the failure mode was evaluated under a digital microscope by one blinded examiner. One-way analysis of variance (ANOVA) with the Games-Howell post hoc test was used to compare the mean SBS between the groups. The mean SBS of the bioceramic materials to RC was significantly higher than to RMGI except for ProRoot MTA (p-value 0.65). The SBS values to RC were as follows: ProRoot MTA (7.64 MPa); NeoMTA2 (8.57 MPa) which was significantly higher than both NeoPUTTY (4.04 MPa) and TotalFill® BC RRM™ Fast Set Putty (4.38 MPa). For RMGI groups, ProRoot MTA showed the highest SBS (7.18 MPa), followed by NeoMTA2 (4.15 MPa), NeoPUTTY (1.62 MPa), and TotalFill® BC RRM™ Fast Set Putty (1.54 MPa). The delayed timing restoration showed a significantly higher SBS than the immediate, except for the immediate RMGI restoration with MTA. To conclude, the SBS of RC to the bioceramic materials was significantly higher than RMGI, except for ProRoot MTA. Both restorative materials had a significantly higher SBS to the MTA groups in comparison to premixed bioceramics. Delayed RC restoration had a higher SBS than immediate restoration. Similarly, delayed RMGI restoration had a higher SBS than immediate restoration with premixed bioceramic but not with MTA.