Effectiveness of chitosan nanoparticles, and novel chemical irrigants with surfactant on smear layer removal and microhardness alteration.

Objective: This current study was designed to compare and correlate between smear layer eradication and reduction in microhardness by natural 0.2%chitosan nanoparticles and novel chemical irrigants with surfactant at the apical root third.

Materials And Method: One hundred and twenty straight single-rooted extracted lower premolars were decoronated and working length obtained with #10 K-file.

Retrieval of mandibular third molar tooth accidentally displaced in submandibular space: Series of two cases.

Displacement of tooth or root in submandibular or parapharyngeal spaces is one of the serious complications while extracting mandibular third molar by the general practitioners. Possibilities enhance in cases with extremely thin lingual plates. Moreover, there are no posterior fascial borders limiting the sublingual and submandibular spaces.

Frictional force released during sliding mechanics in nonconventional elastomerics and self-ligation: An in vitro comparative study.

Aim And Objectives: The aim of this study is to evaluate the frictional forces generated by five different orthodontic brackets when used in combination with stainless steel (SS), titanium molybdenum alloy (TMA), and nickel-titanium (NiTi) archwires in dry conditions at physiological temperature.

Materials And Methods: Five different types of maxillary upper right side self-ligating brackets (SLBs) (Damon 3MX, Smart Clip and Carriere LX) and conventional SS brackets (Mini 2000, Optimum Series and Victory Series) with a slot size 0.022 inch were coupled with 0.