Kothandaraman Rajkumar

• Professor at SRM Dental College, Ramapuram, Chennai - 600089

The aim of this study was to assess the remineralization efficacy of chicken eggshell-derived nano-hydroxyapatite (CEnHAp) combined with phytosphingosine (PHS) on artificially induced dentinal lesions. PHS was commercially procured whereas CEnHAp was synthesized using microwave-irradiation method and characterized using X-ray diffraction (XRD), Fou...

A broad classification of the various dental restorative materials has been proposed for easy understanding for undergraduate students. A comprehensive search of the literature was conducted for the various dental materials available. The literature search revealed the classifications of individual materials based on their composition, use, and tec...

This article discusses the effect of silver oxide (Ag2O) on structural changes, apatite-forming ability, and bioactivity during addition onto the fluorophosphate glass (FPG) network. The foremost objective of silver incorporation on to fluorophosphate glass is to enhance the antibacterial efficacy of glass material which can be widely used as impla...

The effect of strontium on the structure, apatite-forming ability, bioactivity, and enamel remineralization capability of 48P2O5-29CaO-3CaF2-(20-x)Na2O-xSrO fluorophosphate glasses (FPGs) was investigated. The apatite-forming ability of the SrFP samples was assessed by immersing them in simulated body fluid (SBF) solution for 21 days. X-ray diffrac...

This study aimed to comparatively evaluate the cell viability, flexural strength (FS) and depth of penetration following surface pretreatment of demineralized dentin with phytosphingosine (PHS) and proanthocyanidin (PAC). Cytotoxicity of PAC and PHS was assessed by MTT assay on mouse fibroblasts. 52 dentin slabs from human mandibular molars were ra...

Nanotechnology has brought revolutionary changes in the fields of medicine and dentistry. The application of nanoparticles in dentistry is termed as nanodentistry. Researchers worldwide experiment and employ suitable nanoparticles to overcome the existing drawbacks associated with various materials and techniques used in dentistry. Dentistry is fin...

Nanotechnology has brought revolutionary changes in the fields of medicine and dentistry. The application of nanoparticles in dentistry is termed as nanodentistry. Researchers worldwide experiment and employ suitable nanoparticles to overcome the existing drawbacks associated with various materials and techniques used in dentistry. Dentistry is fin...

Inspired by mussel-adhesion phenomenon in wet environment, polydopamine (PDA) was tried in recent research reports to improve the dentin adhesive interface with better strength and durability. The aim of this study was to comparatively evaluate the effect of PDA incorporated dentin adhesive systems and conventional adhesive systems on degree of con...

Phosphate based glasses 48P2O5—(32—x)CaO—20Na2O—xCaF2 (x = 0, 1, 2, 3 and 4 mol%, hereafter, termed as FPG0, FPG1, FPG2, FPG3 and FPG4 respectively) with different fluoride content were prepared by keeping the ratio of P/Ca as 3. To study the influence of fluoride on the physico-chemical properties and bioactivity of phosphate based glasses, variou...

Introduction: Single cross-sectional nickel-titanium (NiTi) rotary instruments during continuous rotations are subjected to constant and variable stresses depending on the canal anatomy. This study was intended to create 2 new experimental, theoretic single-file designs with combinations of triple U (TU), triangle (TR), and convex triangle (CT) cr...

Background: Understanding the mechanical properties is important in predicting the clinical behavior of composites. Finite element analysis (FEA) evaluates properties of materials replicating clinical scenario. Aim: This study evaluated polymerization shrinkage and stress, wear resistance (WR), and compressive strength (CS) of silorane in compar...

Introduction: Root canal sealers exhibit varying degrees of cytotoxicity to periapical tissues. This in turn results in inflammation, delayed wound healing, and even bone resorption. This study aimed to explore the effect of the addition of an antioxidant like pachymic acid on the cytotoxicity of 4 root canal sealers, namely, Tubliseal (Kerr, Romu...

Aims‫׃‬ The aim of this in vitro study was to evaluate comparatively the effects of multiple autoclaving on surface topography and cyclic fatigue of three different rotary nickel‑titanium (Ni‑Ti) instruments. Materials and Methods: Twenty‑one files each of Twisted Files (TF), Revo‑S, and RaCe were used in this study. They were grouped as group 1‑TF...

To examine the influence of different post-surface treatments on the interfacial strength between epoxy resin-based fiber posts and methacrylate-based resin composites that are employed as core build-up materials. Forty clear posts were divided into four groups of 10 each. The different surface treatments used were etching with alkaline potassium p...

The purpose of this study was to investigate diffusion of calcium ions through exposed dentinal tubules following intracanal application of MTA and ApexCal. Thirty extracted anterior teeth were divided into three groups (n = 10): Group I: root canal prepared teeth with unfilled canals served as control; Group II: root canal space filled with MTA; G...