NANO TECNOLOGY IN RESTORATIVE DENTISTRY MOVING TOWARDS A FINER WAY OF DOING DENTSTRY

DR.JAGADEESH KP.G. STUDENT GOVT.DENTAL COLLEGE & HOSPITALVIJAYAWADA

INTRODUCTION“You have to be able to fabricate things, you have to be able to analyze things, you have to be able to handle things smaller than ever imagined in ways not done before.” - William Philips

DEFINITION -Nanotechnology is the manipulation of matter on an atomic, molecular, and supramolecular scale. The earliest, widespread description of nanotechnology referred to the particular technological goal of precisely manipulating atoms and molecules for fabrication of macroscale products

Richard .P Feynman

NANO DENTISTRY – ROBERT FREITAS

ADVANTAGES OF NANO MATERIALS

• More wear resistant

• More biocompatible

• Biomimetic

• Less polymerization shrinkage

NANO GLASS IONOMER

Surface finish more closely approximates hybrid composite

Improved wear resistance

NANO COMPOSITES

• Enhance the polishability of resin .

• High filler loading Increases hardness and wear resistance

• Reduced polymerization shrinkage and less staining.

• Superior hardness, translucency and esthetic appeal.

• Superior flexural strength

NANO BONDING AGENTS

Self etching ,one step materials

Silica nano filler technology

higher bond strength performance prevents particle settling.

Homogenous coat of bonding agent can be applied

Treatment time is minimal.

COATING AGENTS

• Used as a final coating over esthetic restorations.

• Nanotechnology uniformly disperses nanofillers for higher wear resistance, preventing abrasion and discolouration

• Smooth high luster finish retained over time.

• Better wear and stain resistance

DENTIN HYPERSENSITIVITY

Many therapeutic agents provide temporary relief for this common painful condition, but reconstructive dental nanorobots, using native biological materials, could selectively and precisely occlude specific tubules within minutes, offering patients a quick and permanent cure.

ULTRAFINE POLISHING

protect tooth surfaces against the damage caused by cariogenic bacteria as the bacteria can be removed easily from such polished surfaces.

This also leads to less staining of the teeth and better aesthetics.

Before nano particle polishing after nano particle polishing

NANO METRIC BIO ACTIVE GLASS

• Increased anti microbial efficacy by decreasing the size of glass particle size and increasing the surface area

• Advantageous to be material to be used as dentin disinfectant

T.E.M of bioactive glass nano particles S.E.M of a dentine surface after treatment with ultrafine bioactive glass

NANO TECHNOLOGY BASED ENDODONTIC SEALER

Endosequence Bc Sealer allows for the first time, to take advantage of all the benefits associated with bioceramics but to limit its use to merely root repairs and apical retrofills.

BC sealer is to improve the convenience and delivery method of an excellent root canal sealer while simultaneously taking advantage of its bioactive characteristics.

NANO TECHNOLOGY BASEDROOT END SEALANT

Drug-Releasing Root-End Sealant

Bioaggregate a white nanoparticle ceramic cement is a novel root-end filling material y

This NERP material significantly reduce the micro-leakage,seals effectively.

This provides better bond strength and adaptability to the tooth structure.

DEN BUR NANO BRUSH – disposable anatomically sensitive endo applicator

Denbur Nano-Brush is a new standard in Endodontics

Thoroughly and effectively cleans the root canal and allows to apply materials precisely

Whether to clean the pulp from the chamber, to clean the debris in the canal, or to apply materials in the canal.

After using Nano-Brush resin sealers can penetrate deep into dentine tubules and lateral canals

NANO PARTICLES AS ANTI MICROBIAL AGENTS

Broad spectrum of activity and biocompatibility.

polycationic or polyanionic in nature with higher surface area and charge density.

Chistosan nanoparticles applied in the treatment of bacterial biofilms as well as wound healing primarily.

Chitosan nanoparticles effectively eliminates the residual adherent andnonadherent bacteria as well as increasing the diffusion of antibacterial components from the root canal sealers.

significant antibacterial efficacy against planktonic Enterococcus faecalis.

BIO CERAMIC NANO PARTICULATE CEMENT

white mineral trioxide aggregate (MTA) possible to release of hazardous substances.

DiaRoot BioAggregate, a laboratory synthesized water-based cement was recently developed aiming to avoid the presence of such substances.

Bio aggregate has same indications for use and comparable characteristics and composition similar to white MTA, differing mostly by being aluminium free.

It is claimed to promote cementogenesis and form a hermetic seal inside the root canal system.

NANO PARTICLES OF GOLD AND SILVER

Nano particles of silver and gold has anti bacterial and Anti fungal properties

NANOCARE GOLD is the first dental material on the market which allows the elimination of secondary caries problem

NANOCARE GOLD dental material is used directly before embedding dental fillings, ceramic or porcelain crowns, porcelain veneers, bridges (also known as a fixed partial denture), inlays or onlays

NANOCARE GOLDGOLD improves the adhesion of composite materials to tooth tissues, which greatly increases durability of dental restorations

NANO CARE PLUS

Bacterio static efect .

Used for final rinsing of root canal treatment

Based on the silver and gold nano particles

Low surface tension of the NANOCARE PLUS carrier substance allows nanoparticles to get to the smallest fissures and dental ducts of the system.

As a result, even bacteria residing in the fissures in spore form after treatment have no chances for growth and development.

NANOZON

Nano technology based ozone therapy

Provides high concentrations of ozone

Very effective in dental therapy

Facilitates the treatment of initial stages of Caries in milk and permanent teeth

Reduces the risk of complications after surgical procedure

Improves results in root canal treatment

NANO TEC ENDO

Nano technology based endodontic irrigation system

Eliminates the disadvantages of traditional syringe

Ensures max. Safety

Does not require dental assistant

Reduces the risk of post –treatment complications

Prevents the accidental leakage of the liquids into patientsmouth and beyond root apex

Nano optimised mouldable ceramics

Nano fillers enhance polishability reduce wear

Nano pigments adjust the shade of the restoration to the surrounding tooth ( chameleon effect)

Nano modifiers increases the stability non slump) of the material prevents sticking to instruments

IMPRESSION MATERIAL

Nanofillers are integrated in vinyl polysiloxanes producinga unique addition silicone impression material.

Thematerial has better flow, improved hydrophilic properties,and enhanced detail precision.

Trade name – nanotech elite H-D plus

FUTURE ADVANCES

NANO ROBOTS

Interrupt or alter nerve-impulse traffic in individual nerve cells.

Induces local anaesthesia

Avoids discomfort to the patient

NANO SIZED DENTAL FILM BRINGS TEETH BACK TO LIFE

The scientists are reporting development of a multilayered, nano-sized film that could help regenerate dental pulp.

Previous studies show that the substance, called alpha melanocyte stimulating hormone, or alpha-MSH, has anti-inflammatory properties.

Nano-films containing alpha-MSH also increased the number of these cells. This could help revitalize damaged teeth and reduce the need for a root canal procedure, the scientists suggest.

Dentists may use a special nano-sized film in the future to bring diseased teeth back to life rather than remove them.

SAPPHIRE AND DIAMOND

Tooth durability and appearance improved

High hardness and failure strength

Can be used in nano composites

DENTIF ROBOTS ( NANO ROBOTIC DENTIFRICE )

Metabolises the trapped organic matter

Performs continuous caluculs debridement

Safely disactivates them selves

REFERENCES

What is Nanotechnology? By Zhong L. Wang http://www.nanoscience.gatech.edu/zlwang/research/nano

A Nanotechnology Composite Author: N. Davis Compendium/Sept. 2003, Vol. 24, No.9, 662-670

Dr. Ekta Ingle J Oral Health Comm Dent 2011;5(2)64-67

Dr. Manjula Mehta,Indian J Dent Res, 20(4), 2009

Ramandeep Singh Gambhir, G. M. Sogi, Ashutosh Nirola,Heena KakarJournal of Orofacial SciencesVol. 5 Issue 1 January 2013

Saunders dovepress company 2013