Sealing Ability of MTA Used as a Root End Filling Material: Effect of the Sonic and Ultrasonic Condensation

Abstract

Despite the excellent properties of mineral trioxide aggregate (MTA), the condensation technique may have some influence in its sealing ability. The purpose of this study was to compare the sealing ability of sonic and ultrasonic setting of MTA. Thirty-four extracted human teeth had their canals prepared and filled with Sealapex sealer and gutta-percha using the active lateral condensation technique. The teeth were rendered waterproof and apicoectomy performed at 3 mm from the apex. Root-end cavities (3.0 mm deep and 1.4 mm diameter) were prepared with diamond ultrasonic tips. The root-end cavities were filled with Pro-Root MTA® with ultrasonic vibration, sonic vibration or no vibration. The positive control group did not receive any material while the negative control group was totally rendered waterproof. After material set, the specimens were immersed in Rodhamine B for 24 h, under vacuum in the first 15 min, then washed, dried and split longitudinally for evaluating the infiltration at the dentin/material interface. Data were analyzed using ANOVA and Tukey's tests at 5% significance level. Sonic vibration promoted the lowest infiltration values (p<0.05). It was concluded that sonic vibration could be considered an efficient aid to improve the sealing ability of MTA when used as root-end filling material.

Evaluation of Different Root Canal Filling Methods in Primary Teeth

“…However, the study findings showed the specimens filled using an endodontic irrigation needle (Group 4) were the least adequately filled in terms of Recently, ultrasound technology has regained its popularity as a tool in dentistry. One study used indirect ultrasound to improve the compaction of glass ionomer cement, and another study using direct ultrasound to agitate root canal during irrigation also found it helped in the compaction of root-end filling material (25,26). In the present study, ultrasonic and sonic support groups (Groups 2 and 3) showed similar acceptable scores to the Metapex® syringe alone for the length and the quality of primary teeth root canal fillings.…”

Root Reconstructed with Mineral Trioxide Aggregate and Guided Tissue Regeneration in Apical Surgery: A 5-year Follow-up

“…MTA shows adequate sealing ability against microorganisms and their byproducts (13); it also shows good biocompatibility, adequate solubility (2,4), and dimensional stability and radiopacity (4). In addition, MTA may be a viable alternative material in certain clinical applications such as capping of the dental pulp tissues, root-end closure, repair of root perforation and rootend filling because it allows regeneration of the original tissue when placed in direct contact with dental pulp and periradicular tissues (2,5).…”

“…MTA reportedly has adequate biocompatibility and sealing ability and is less cytotoxic than other currently used materials in endodontic therapy (2,3). Moreover, it shows favorable characteristics in apical tissues.…”

Properties of Hydrated Mineral Trioxide Aggregate

“…Root-end cavities were fi lled with ProRoot MTA ® using ultrasonic vibration or sonic vibration in comparison to the control group (no vibration) and immersed in rhodamine B and assessed for leakage by tracing the fl uorescent dye showed that sonic vibration promoted the lowest leakage values and may be considered an effi cient aid to improve MTA sealing ability in root-end fi llings [ 20 ].…”