Root canal preparation with Endo-Eze AET: changes in root canal shape assessed by micro-computed tomography.

Aim: To evaluate the relative performance of Endo-Eze Anatomic Endodontic Technology (AET) stainless steel instruments when shaping maxillary molar root canals in vitro. Methodology Extracted human maxillary molars were scanned, before and after root canal shaping with Endo-Eze AET, employing micro-computed tomography (muCT) at an isotropic resolution of 34 microm. Three-dimensional root canal models were reconstructed and evaluated for volume, surface area, 'thickness' (diameter), canal transportation and prepared surface.

An analysis of endodontic treatment with three nickel-titanium rotary root canal preparation techniques.

Aim: To investigate clinical results of root canal treatment performed with the aid of nickel-titanium (NiTi) rotary instruments.

Summary: A total of 179 patients underwent root canal treatment with either (A) Lightspeed, or (B) ProFile .04 or (C) ProFile .

The LightSpeed system.

This article describes the use of an innovative, engine-driven, rotary, root canal preparation instrument. The geometric design of this nickel-titanium instrument is totally different from currently marketed manual or engine-driven stainless steel or nickel-titanium instruments. The thin, taperless, noncutting shafts of LightSpeed instruments maximize the flexibility of the nickel-titanium alloy, particularly in the larger sizes.

Root-canal preparation with FlexMaster: canal shapes analysed by micro-computed tomography.

Aim: To evaluate the relative performance of FlexMaster nickel-titanium instruments shaping maxillary molar root canals in vitro.

Methodology: Extracted human maxillary molars were scanned, before and after root-canal shaping, with FlexMaster, employing micro-computed tomography (microCT) at a resolution of 36 microm. Canals were three-dimensionally reconstructed and evaluated for volume, surface area, 'thickness' (diameter), canal transportation and prepared surface.

Root canal preparation with FlexMaster: asessment of torque and force in relation to canal anatomy.

Aim: To investigate physical parameters of FlexMaster nickel-titanium instruments while preparing curved canals in maxillary molars in vitro.

Methodology: A torque-testing platform was used to prepare root canals in 11 extracted human maxillary molars with FlexMaster rotary instruments. Peak torque and force was registered along with numbers of rotations required to shape the canals.