Tomographic Evaluation of the Internal Adaptation for Recent Calcium Silicate-Based Pulp Capping Materials in Primary Teeth

Abstract

Objectives. To evaluate the internal adaptation of recent pulp capping materials (TheraCal and Biodentine) relative to MTA when used as indirect pulp capping for primary teeth. Materials and Methods. Thirty primary molars were randomly allocated into three groups, group (A) was TheraCal, group (B) was Biodentine, and MTA was the control group (C). A standardized round class-V cavity (1.5 mm diameter and 2 mm depth) was prepared using a milling machine on the buccal surface of each tooth with the pulpal floor located on the dentin. Then, pulp-capping materials were applied. Finally, all teeth were restored by composite restoration. The internal adaptation of the pulp-capping materials to the dentinal surface was investigated by microcomputed tomography (Micro-CT) to determine the internal gap volume, and by optical coherence tomography (OCT) to determine the high-intensity reflection of light from the floor. Results. Based on Micro-CT findings, TheraCal showed significantly higher internal gap volume than both MTA and Biodentine ( p < 0.001 ), while MTA and Biodentine did not show a significant difference in the gap volume. Based on the OCT findings, TheraCal showed a significantly higher intensity of light reflection than both MTA and Biodentine ( p < 0.001 ); however, there was no significant difference between MTA and Biodentine. Pearson’s correlation test showed that there was a strong positive correlation between Micro-CT and OCT ( r = 0.686 , N = 30 , p < 0.001 ). Conclusions. Biodentine and MTA showed a comparable result in terms of their internal adaptation on the dentinal surface of the primary teeth, and both were better than TheraCal. There is a moderate to a strong positive correlation between Micro-CT and OCT in the measurement of internal adaptation of the tested pulp capping materials. OCT can be helpful and beneficial for the clinical setting and allow dentists to screen and evaluate restorations during follow-up.

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“…The clinical and radiographic results of TheraCal and Biodentine suggest their use as an alternative material for IPC in young permanent molars with greater success [13] . Finally, Biodentine and MTA showed a comparable result in terms of their internal adaptation on the dentin surface of primary teeth, and both were better than TheraCal [20] . This treatment has high success rates (over 90%), however, it will depend mainly on the size of the lesion being treated and its time of evolution, beyond the material of choice.…”

Shear bond strength of calcium silicate-based cements to glass ionomers

“…The heterogeneity observed in these outcomes may also be attributed to several bonding variables, including sample storage conditions, sample characteristics, surface preparation techniques, thermal cycling, and film thickness. Furthermore, variations in the results may arise owing to the diverse physical properties of calcium silicate-based biomaterials, variations in radioactive components, discrepancies in the production process, purity of the components, and differences in hydration products [ 6 , 25 ]. Although the primary constituent of the biomaterials utilized in our research is calcium silicate, the recently developed MMTA incorporates zirconium oxide instead of bismuth oxide, unlike WMTA.…”

Evaluation of four vital pulp therapies for primary molars using a dual-cured tricalcium silicate (TheraCal PT): one-year results of a non-randomized clinical trial

“…Another plausible explanation might be the lower adaptation of TheraCal PT to dentin, impairing its sealing ability, especially with wider exposures in PP. One study revealed that the gap between TheraCal LC and dentin in primary teeth was significantly higher than that with MTA and Biodentine [46]. Thus, although this could be true for TheraCal PT, no studies have evaluated this parameter.…”