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• Bio mimetic• 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

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.

• uniformly dispersed 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 nano robots, 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 polishingafter 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 has advantage of bioceramics but to limit its use to merely root repairs and apical retrofills.

Improved convenience and delivery method.

NANO TECHNOLOGY BASEDROOT END SEALANT

• Drug-Releasing Root-End Sealant

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

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

• Better bond strength and adaptability.

DEN BUR NANO BRUSH – Disposable Anatomically Sensitive Endo Applicator

• New Standard in Endodontics

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

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

• 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 and nonadherent 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 MTA possible to release of hazardous substances.

• DiaRoot BioAggregate avoids the presence of such substances.

• Bio aggregate has similar indications 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

• Anti bacterial and Anti fungal properties .

• NANOCARE GOLD allows the elimination of . secondary caries problem.

• Used directly before embedding dental fillings, ceramic crowns, porcelain veneers, bridges ,inlays or onlays.

• Improves the adhesion of composite materials to tooth tissues, which greatly increases durability of dental restorations .

NANO CARE PLUS

• Bacterio static effect .

• 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.

• 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 deciduos 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 patients mouth 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 poly siloxanes producing a 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

• 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