Precision in endodontic therapy by novel-guided approach.

Guided endodontics has proven effective in treating pulp canal obliteration (PCO). However, challenges arise when dealing with limited vertical space, particularly in cases where long burs and guides are necessary. In this case report, we introduce a novel approach utilizing a sleeveless three-dimensional (3D)-printed guide, aimed at overcoming vertical space constraints while maintaining visibility and irrigation during drilling.

Comparative analysis of an epoxy resin-based and a premixed calcium silicate-based sealer's push-out bond strength with and without incorporation of chitosan nanoparticles: An investigation.

Aim And Objectives: The aim of the study was to compare and evaluate the push-out bond strength (POBS) of epoxy resin-based and calcium silicate-based sealers with and without incorporating chitosan nanoparticles (CSNPs).

Methodology: Eighty human mandibular premolars with a single canal were taken. A standard root length of 15 mm was established.

Influence of different irrigant activation methods on apical debris extrusion and bacterial elimination from infected root canals.

Introduction: The study aimed to determine the apical debris extrusion and microbial elimination from infected root canals after using different irrigant activation methods.

Materials And Methods: Forty freshly extracted human mandibular premolars were selected and randomly assigned to four groups ( = 10). The teeth were mechanically prepared, sterilized, and inoculated with Enterococcus faecalis for 1 week.

Keratinization and its disorders.

Keratins are a diverse group of structural proteins that form the intermediate filament network responsible for maintaining the structural integrity of keratinocytes. In humans, there are around 30 keratin families divided into two groups, namely, acidic and basic keratins, which are arranged in pairs. They are expressed in a highly specific pattern related to the epithelial type and stage of cellular differentiation.

Radicular cyst in deciduous maxillary molars: a rarity.

Radicular cyst arising from deciduous teeth is exceedingly rare accounting for <1% of all radicular cysts. A total of 122 cases have been reported to date in the English language literature. We present a rare case of a radicular cyst associated with a decayed deciduous maxillary molar tooth without any history of prior pulp therapy.

The influence of salivary contamination on the shear bond strength of two newer generation dentin bonding agents - An in vitro study.

Background And Objectives: To investigate whether salivary contamination during various stages of the bonding procedures of Xeno III and Clearfil SE Bond influences shear bond strength.

Materials And Methods: THE OCCLUSAL SURFACES OF THIRTY SIX MAXILLARY PREMOLAR TEETH WERE GROUND AND DIVIDED INTO TWO GROUPS CONTAINING EIGHTEEN SPECIMENS EACH, WHICH WAS SUBDIVIDED INTO THREE SUB GROUPS: Group I - Xeno III, Group II - Clearfil SE Bond, Subgroup A - Uncontaminated (control), Subgroup B - Contaminated with saliva before application and light curing, Subgroup C - Contaminated with saliva after light curing. Composite resin Filtek Z350 was packed using Teflon mold cured and subjected to shear bond strength analysis using universal Instron machine.