To compare and evaluate microcracks and smear layer after root end preparation by laser, ultrasonic tip, and conventional bur in single-rooted teeth: "Scanning electron microscope study".

Aim: Evaluation of root-end cavities for the existence of microcracks and smear layer with laser, ultrasonic tip by conventional bur, and control group in single-rooted tooth by scanning electron microscope (SEM).

Methodology: Fifty-two extracted fully developed single-rooted teeth were decoronated, cleaned, shaped, and obturated with F2 GP, and 3 mm roots were removed. Laser, ultrasonic tip (AS 3Dretro-tip on Newtron-SATELEC, Acteon), and conventional bur (size 010 round) were used to create root-end preparation.

To compare and evaluate the shear bond strength of sixth-, seventh-, and eighth-generation dentin bonding agents: An study.

Context: Bonding agents have developed from a multistep bonding process to simplification, i.e. self-etch and single bottle system.

Prognostic Impact of Poor Differentiation of Squamous Cell Carcinoma in Treatment Naïve Node-Negative Early Oral Cancers.

We have conducted this study to understand the impact of poor differentiation (PD), as a sole poor prognostic factor, in early oral cancers. This was a retrospective analysis of a prospectively maintained database of clinically node-negative early T stage OSCC patients operated between 2012 and 2014. Impact of PD on the survival and role of adjuvant therapy in these patients was noted.

Intraoperative frozen section for detection of occult metastasis in clinically N0 neck does not improve outcome in oral cavity carcinomas.

Objective: The objective of this study was to evaluate the utility of frozen section (FS) in detecting occult nodal metastasis in cN0 OSCC and its impact on regional failure and survival.

Materials And Methods: Clinical records of patients of OSCC operated from January 2013 to December 2014 were retrospectively reviewed. These patients were divided into two groups-Group A comprised of patients who underwent selective neck dissection (SND) (level III/IV) and FS based completion (level IV ± V); Group B included patients who underwent SND I-III/IV without FS.

Role of Poor Oral Hygiene in Causation of Oral Cancer-a Review of Literature.

Oral squamous cell carcinomas (OSCC) are among the commonest cancers in South East Asia and more so in the Indian subcontinent. The role of tobacco and alcohol in the causation of these cancers is well-documented. Poor oral hygiene (POH) is often seen to co-exist in patients with OSCC.

Volumetric analysis of root filling with cold lateral compaction, Obtura II, Thermafil, and Calamus using spiral computerized tomography: An Study.

Aim: The aim of the present study is volumetric analysis of root canal filling with cold lateral compaction, Obtura II, Thermafil, and Calamus using spiral computerized tomography (SCT).

Materials And Methods: Root canals of eighty mandibular premolars were instrumented using rotary ProTaper, and the volume of the canal space was measured using spiral computerized tomography (SCT). The teeth were divided into four groups of twenty teeth each, and root canals filled by lateral compaction technique, Thermafil carriers, Obtura II, and Calamus techniques, respectively.

Incidence of Apical Crack Initiation during Canal Preparation using Hand Stainless Steel (K-File) and Hand NiTi (Protaper) Files.

Aim: To evaluate the incidence of apical crack initiation during canal preparation with stainless steel K-files and hand protaper files study).

Materials And Methods: Sixty extracted mandibular premo-lar teeth are randomly selected and embedded in an acrylic tube filled with autopolymerizing resin. A baseline image of the apical surface of each specimen was recorded under a digital microscope (80×).

A Comparative Analysis of Different Finishing and Polishing Devices on Nanofilled, Microfilled, and Hybrid Composite: A Scanning Electron Microscopy and Profilometric Study.

Unlabelled: The continuous development of esthetically acceptable adhesive restorative material has made a variety of tooth-colored materials available for clinical use. The advent of visible light polymerizing resin and the use of finer filler particles permit resin composites to be polished to higher degree. The effect of polishing systems on surface finish has been reported to be material-dependent, and the effectiveness of these systems was mostly product-dependent.

Evaluation of Coronal Leakage Following Different Obturation Techniques and in-vitro Evalution Using Methylene Blue Dye Preparation.

Introduction: Coronal and apical leakage still remains one of the most important cause for endodontic failure in spite of the presence of advanced endodontic materials. The cause may attribute to different filling techniques, physical and chemical properties of sealers and presence or absence of smear layer assessment of coronal or apical leakage is used as a research method to compare the sealing ability of different techniques and endodontic materials.

Aim: To compare the coronal bacterial leakage using methylene blue in four different obturation techniques after protaper hand instrumentation.