Laser Periodontal Therapy: gingivectomy to LANAP
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Transcript of Laser Periodontal Therapy: gingivectomy to LANAP
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Laser Assisted Periodontal Treatment:
gingivectomy to lanap
Dr. Scott K. Smith
October 30, 2013
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Course Objectives
• Brief History and Science of Lasers
• Lasers and their use in Dentistry
• Lasers in the Treatment of Periodontal Disease
• LANAP and the opposing view
• What you can do with this knowledge
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•31% of adults surveyed by the ADA said it was VERY important that my dentist has a laser!
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Excuses for not using lasers
• Too Expensive
• Learning Curve Too Steep
• Safety
• Not Better Than Traditional Treatment
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Top Reasons dentists want Lasers
•Frenectomy•Gingivectomy•Troughing•Periodontal Disease Treatment•Tooth Preparation•BioStimulation – TMJ chronic pain
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•Increase patient comfort•Increase effectiveness of treatment•Improve patient acceptance of care•Increase reparative and regenerative healing of patient
•Increase types of procedures by provider•Improve office image
Benefits of lasers as described by Dentists
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History of Lasers in Dentistry
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First Laser Developed by Theodore Maiman
A ruby based laser
1960
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So we meet again Mr. Dot. Prepare to Die!
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Lasers in Dentistry
•1965 Gold used Ruby and CO2 Lasers•1970s CO2 and Nd:YAG (cw) on teeth•1980s Emphasis switched to incision of soft tissue with CO2
•1990s Introduction of Diode and Er:YAG and pulsed Nd:YAG
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And Now Some Physics…
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Laser Basics
• Electromagnetic Energy and the Photon and Wavelengths
• Wavelength Spectrum - Relevance to Laser Dentistry
• Pulsing Laser Energy vs. Continuous Wave Laser Energy
• Absorption of Laser Energy by Water, Hemoglobin and Pigmentation
• Effects of Laser Energy on Tissue
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Einstein’s THeory
Einstein and Niels Bohr postulate the
theory of stimulation of electromagnetic
field to emit amplified light
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Einstein introduces the Photon
When an electron moves from a higher energy level to a lower energy level, a photon (particle of light) is emitted. Light emitted this way (from movement of charged particles) is called radiation.
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Photons Emit Certain Wavelengths
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Herding the Photons
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THe Medium Determines Wavelength
Strobe Light
•Solid State - Crystal•Gases•Electrical Current
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Laser Light Is:
Light Amplified by Stimulated Emission of Radiation
Monochromatic Light
Collimated
Coherent
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Laser Frequency
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Continuous Wave
• A steady beam of light with constant power
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Pulsed Wave
• Pulsed lasers emit light in a series of pulses of duration which increase peak power = Greater Punch can Penetrate Further
http://www.youtube.com/watch?v=cZfsnA7dAHI
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Pulsed Vs Continuous
Continuous emission of laser energy will non-selectively ablate tissue
Pulsed Energy increases Wattage to area and reduces Duty Cycle (time laser on)
Generally Nd:YAG runs 0.2% of time. This reduces thermal effects on tissue
Varying the Pulse Duration can provide additional benefits such as ablating tissue and hemostasis
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Co2 and Erbium Lasers high Absorption in water and
hydroxyapatite
Nd:YAG high absorption in dark tissue
Absorption of Laser Energy in Tissue
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Absorption in Tissue
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Tissue Penetration
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Laser Effects on Tissue
Photothermal – absorbed by tissue and converted to heatPhotodisruptive (Acoustic) – Pulsed laser energy converted
to mechanical energy in form of shock wavePhotochemical – laser energy converted into chemical
energy.Photodynamic – Requires light absorbing chemical to
produce biochemical reactive form of oxygen – singlet oxygen
Biostimulation – LLLT absorption of photon energy directly by Mitochondria and improve healing, pain relief.
Cut tissue, ablate tissue, disinfect, coagulate, biostimulate
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Common Lasers In Dentistry
•Diode – 810, 940, 980nm•Nd:YAG – 1064nm•Er:YAG – 2780nm •CO2 – 10,000nm
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WAKE UP!!!!!!
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YOU NEED TO KNOW WHAT YOU ARE PLAYING WITH
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Lasers are Not Created Equal!
Laser Medium – Gas, crystal, solid stateMedium determines Wavelength (Frequency)Wavelength Absorbed Differently by H2O and
TissueAbsorption Depth Determined by WavelengthPulse and Duration focus and concentrate Energy
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Non Controversial Laser Treatment
FrenectomyGingivectomyTroughingUncovering implantsCutting TeethCutting BoneGingival Sulcus Debridement
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Er:YAG = BioLase
• 2780 Wavelength
• Absorbed by water and Hydroxyapatite
• High Surface absorption
• Excellent for hard tissue removal
• Non-Selective for Soft tissue removal
• Fiberoptic Delivery
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CO2 Laser• 10,000Nm mostly continuous wave
(millisecond pulsing offered in some)
• Non contact
• Absorbed by Water and Hydroxyapatite
• Excellent for cutting soft tissue and surface ablation
• Hollow tube Delivery
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Diode
• 940nm (810nm and 980nm also)
• Absorbed by Water
• Continuous wave with programmable pulsed setting
• Disposable fiberoptic Delivery
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810
nm
940 nm
Operculectomy - 980 nm
Operculectomy - 940
nm
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Clean Removal around Implant
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Sulcular troughing and Gingivectomy
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What Laser is best for Periodontal Disease?
Periodontal Disease Manifests Clinically as Red Inflamed Tissue
The Disease is initiated by Bacteria generally black pigmented anaerobes that invade tissue and cementum
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Prevalence Of Periodontal Disease
•200 Million US Adults and nearly 95% have some form of Periodontal disease with 30% having Moderate to Severe Periodontitis
•Only 3% of the Moderate to Severe actually get treatment!
•When Detected and Treated Early this Disease Does not have to be as Destructive regarding, Function, Phonetics, Esthetics or Systemic Implications!
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Complex Disease
•Commonly regarded as an interaction between bacteria and our body’s host Response
•Contributory Factors include – Genetic Susceptibility, Systemic Disease, Extrinsic Factors, Occlusal Forces and Local Irritants.
•Unfortunately there has been no Treatment Panacea!
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http://www.youtube.com/watch?feature=player_embedded&v=l5rOvglzjD0
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Clinical Goals:
Decrease Bacterial Levels
Reduce InflammationEliminate Infected tissueReduce Pocket Depths
Gain Clinical attachment
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Recession SensitivityMorbidity
CostLong Junctional Epithelium
Consequences of Traditional Treatment:
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Regeneration of Periodontium
•Berube – 1947 – Studied whether Regeneration was possible of alveolar bone, ligament and cementum.
•Goldman – 1949 – Intrabony Pockets and defects could be reversed via Regeneration
•Carranza – 1954 – Identified New PDL, cementum and bone – or regeneration
•Essential Elements for Regeneration: Complete Removal of Pocket Epithelium, Complete Sterility of the Pocket, Well organized Fibrin Clot
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Regenerative Surgery
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Disadvantages of Regenerative Surgery
• Surgical manipulation of tissue with consequences
• Increased sensitivity and risk of root decay
• Cost of Procedure
• Fear of Surgical Procedure
• Must have Patients Cleared of Any Medical Issues i.e. clotting concerns
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Laser Assisted New Attachment Procedure
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Periolase MVP 7
Nd:YAG 1064Nm
Fiberoptic Delivery 200u 300u 450u size
7 Variable Pulse Settings
Absorbed by Hemoglobin and pigmented tissue
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LANAP Protocol
Full Mouth Treatment completed in one to two visits
No need for pretreatment ScalingNd:YAG laser used to disinfect and de-epithelizeUltrasonic Instrumentation of rootsNd:YAG laser used to develop sterile clotOcclusal management: splinting, occlusal guards, occlusal adjustment
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SoundEliminate Pocket EpitheliumUltrasonic and Hand Scale
CoagulateOcclusal Equilabration
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Laser Requirements for Periodontal Treatment
Want to Destroy Quantity and Quality of BacteriaWant to De-EpithelializeWant to Penetrate into cementum and gingival
thicknessWant to Minimize damage to healthy tissueWant to Stimulate Regeneration
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Nd:YAG Gram Negative Effects
90% Perio Pathogens are black pigmented, gram negative, anaerobic,
Porphyromonas Gingivalis is the key Red Complex pathogen
P. gingivalis resides, replicates in Epithelial, macrophages, dentinal tubules
P. gingivalis found within Carotid Plaque
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Nd:YAG Gram Negative Effects
Porphyromonas Gingivalis, Strongly correlated with Periodontitis
Ablation of Pg with Nd:YAG complete and to a depth of 2mm from surface.
Kill rate 16x greater with Nd:YAG vs DiodeBlood samples prior to and after LANAP
show complete reduction of P.gingivalis 3 days after therapy
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BioFilm Disruption
Laser irradiated surfaces removed bacteria from biofilm and hard surfaces
Abrupt decrease in bacterial ATP = cell mortalityEffective bacterial ablation and slower rate of
recolonization
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BioFilm Disruption
4 different substrates biofilm seen to oscillate and break off and instantly removed from substrate without effect on substrate
55% bacterial reduction from laser shockwaves alone independent of heat or wavelength
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Elimination of Pocket Epithelium
Histologic study showed complete removal of diseased epithelium without damaging the underlying tissue layers with Nd:YAG.
Deeper penetration of Nd:YAG vs. Diode
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Nd:YAG Host Modulation Effect
Decreased levels of pro-inflammatory proteins in tissue and GCF.
Reduced IL-1b,IL-6, TNF, MMP-8, LPS Increased levels of anti-inflammatory proteinsIncreased IL-10, IL-18
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LANAP is Evidence Based
Only Periodontitis Protocol with Scientific Proof
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Nd:YAG vs DiodeWon’t Achieve Same Results – Peak Power energy
over 2000 Watts with Fr Nd:YAG. Diode = 40 Watts Need high peak pulse power to achieve
penetration into tissueDiode has Hz or Repetition rate that is unable to
generate PenetrationNo Hot Tip Effect with Nd:YAG – activated tips with
DiodeThermal Damage to Connective Tissue with DiodeToo Hot or Not Hot Enough
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Nd:YAg vs diode
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LANAP Research - Early
10 Published Non-Peer Reviewed Articles Published between 1998-2002 75 total Patients
Radiographic Bone Gain Stable over 10 years
Probing Depth Reduction over 10 years
All Patients had positive change in probing and or radiographic sites.
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Human Histology 1999Single Pass of Nd:YAG 4 W, 100usec, 200mj to
pocket depth of 10mm
No Damage to Connective Tissue but Pocket Epithelium totally eliminated
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Journal of General Dentistry – 2004, Harris, David
Laser assisted new attachment procedure in private practice
42 patients from 200 patient records in practice91% of total sites reduced probing depths by
45% at 6 months.Learned from these Early Studies that the
healing time requires up to one year for Results to be seen
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Before and After 1 year
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14 months Post LANAP
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6 months Post LANAP
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Affect it Don’t resect it
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Histologic Evaluation of Nd:YAG
Yukna - 2007
All LANAP Specimens:New cementum and connective tissue
Control Specimens: No new cementum or connective tissue
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Histologic Evaluation of Nd:YAGYukna - 2007
Histologic evaluation 3 months post LANAP
LANAP vs. Control of SRP alone
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Histologic Evaluation of Nd:YAG
Yukna 2007
Mean probing depth reductionLANAP – 4.7mmControl – 3.7mm
Attachment GainLANAP – 4.2mmControl – 2.4mm
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Dentistry Today 2008, Long, Craig
Non Peer Reviewed
New Attachment Procedure – Case StudyComparison of xrays and probing at one yearResults 68.9% mean probe depth reduction
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General Dentistry -2012, Tilt, Lloyd
Tooth Longevity: Measure to other Studies (laser)LANAP – Significant reduction of lost teeth in
clinical practice.LANAP – 0.4 teeth lost, other protocols average 2
teeth% Downhill patients – 5% LANAP 15-20% otherRe-treatment – LANAP 15% total patients
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Research Not Yet Published2nd LANAP Human Histology Study – Marc Nevins12 total teeth multi and single rooted teethNotched at apical extent of defectAll of these Hopeless teeth (15mm, mobility,
recession 50%) – All twelve returned to clinical Radiographic and histologic health
10 teeth new attachment to bottom of notch6 of ten teeth had cementum mediated new
attachment
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Univ. Of Colorado LANAP Data
One year after treatment:
PD < 3mm 52% 93%
PD 4-6mm 36% 6.6%
PD 7-9mm 8.9% 0%
PD >10mm 0.7% 0%
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Research Current
5 multi site locations (University Settings)Randomized, blinded, longitudinal, calibrated4 quad design LANAP vs. SRP vs. Flap vs. Coronal
Debridement75 Total patients – 53 done to date
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Initial Presentation
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First Pass
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Second Pass
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4 week and 2 week
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4 week and 2 week
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Advanced Periodontitis
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Probing depths 5-10mm
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90% Bone loss #27
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Laser – First Pass
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10mm to 3mm #27
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Anterior bone loss7-8mm pocketing max
anterior
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Six months laterPocketing 3-4mm!
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Case Presentations
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One Year Post-Op
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Two Year Post op
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One year radiograph
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Two year follow up
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Medical Issues:
Recent Severe Stroke
Taking Coumadin
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One Year Post Op
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Post-Op Care - Patient
Three days of liquid dietSoft food for one monthTwo weeks Q-tip cleaning of area Chlorhexidine on Q-tip or rinse two weeks.Soft toothbrush for one month – then sonic brushNo flossing for two weeksFlossing after two weeks to gum line only – one
monthMaintenance visit one to two months after last
session of LANAP
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Hygiene Post LANAPNo Probing for at least six months post LANAPNo subgingival scaling for six months post LANAPHand scalers and supra-coronal polish –
ultrasonic on low power just to gingival marginFluoride treatment OKLow level laser treatment OK for disinfection
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Patient Had Not been to Dentist in 20 years –
Referred to Physician – No Systemic Problems
CT scan Obtained
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Medical Issues:
HBP, Imminent Hip Surgery
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LAPip Peri-Implantitis
Same protocol but reduced power 20-30J per passUltrasonics used on lower level and with special tipSecond pass done to provide fibrin clot
Results showing great promise to reduce inflammatory effects and gain clinical attachment.
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Six months Post Laser Tx
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Why LANAP over Traditional Approach?
Addresses all Treatment ObjectivesBetter Decontamination of PocketBioStimulatory and RegenerativeShorter Active Treatment 2 weeks vs. 2 yearsLess Invasive and Less Morbidity than SurgeryNot Necessary to Go Off Anti-CoagulantsBetter Patient Treatment Acceptance
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Laser Assisted Hygiene Therapy
Nd:YAG, Diode, Er:YAG – All can be usedGoals: Decontaminate, De-epithelializeDecontaminate ALL patients prior to
maintenanceDe-Epithelialize pockets over 5mm or bleedingSRP with hand instruments AND ultrasonicsIrrigating via Ultrasonices with medication ?PerioScience Anti-Inflammatory rinsesPerioscope for Better Root Debridement
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Thank You For Your Attention!