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Lasers in the Centers for Dental Medicine Practice
By Robert J. Schulhof, AB, MA Math. Stat.
The Enigma of Periodontal Treatment
According to the available statistics, while over 40% of the patients in the typical dental practice need periodontal treatment less than 10% are accepting it. There are a two essential reasons for this phenomenon, periodontal treatment is either:
1. Unsalable
2. Ineffective
There have been two main modes of treatment:
1. Soft Tissue Management, usually in the form of scaling and root planning, and quarterly periodontal maintenance visits. The goal here was “maintenance”, not letting things get much worse, but was never ending. The statistics from Ora Pharma show that less than 50% of the over 5mm pockets are reduced to 3mm with 1 year of SRP’s in this fashion. Adding topical such as Arestin increased the factor to 58%, but the treatment was never ending.
It is hard to “sell” a never ending treatment and people rarely referred their friends. In those cases where the case could not be maintained the patient was referred for
2. Periodontal surgery. People who have withstood this painful experience rarely forget it. The goal is to perform flap surgery to gain better access to the calculus than possible with an SRP. The problem is that this approach ignores the bacterial component of periodontal disease and was not a final solution either.
The Laser Revolution
Centers for Dental Medicine have been in operation over 5 years now and over 75 practices have participated nationwide with just about every type of laser imaginable. In our experience lasers have saved countless lives and greatly increased income by providing a treatment that is :
• Painless
• Finite
• Effective
Painless- while it will depend on the technique and the objectives many of our clients report no need for anesthetic. In fact patients report a reduced post treatment discomfort when laser treatment is combined with SRP, compared to the SRP alone. (1)
Finite- quite some time ago, laser instructor Chris Owens pointed out that for treatment planning a laser should reduce pocket depth by 1mm per visit. Our research (2) shows that around 90% of 4-6mm pockets can be reduced to 3mm in 3 months of treatment with a virtual disappearance of bleeding. This means that with effective home care, the need for perpetual STM or surgery is eliminated.
Effective- When used along with an effective ultrasonic irrigation and SRP lasers will both kill bacteria and vaporize the diseased tissue.
Why Finite Treatment matters in the world of the Oral Systemic Connection:
Since it has been shown that the periodontal bacteria and persistent inflammation contribute to heart disease, diabetes and even cancer it is vital that we once and for all:
Kill the pathogenic anaerobic bacteria
Remove the deep pockets which are their habitat
Remove the bleeding and inflammation
Additionally if we can offer finite six month and one year treatment plans:
Patients can finance treatment and are more likely to start
Patients are more likely to complete treatment and get well
Therefore they save lives and increase income.
In the last six months we have worked with the Florida Probe Corporation to allow each of our practices to automatically submit their probing and bleeding data to determine the percentage of their practice that still needs treatment and the effectiveness of their treatment. As this data rolls in it will allow us to make quantitative comparisons of different treatment modalities, never before possible in the field. This will make it possible to:
1. Determine which lasers are most effective, and if there is a difference
2. If there are non-laser treatments that are also finite and effective.
Therefore we do not require that a practice use a laser to become a Center for Dental Medicine. If you believe you have a finite, (6 months to one year) effective, treatment we invite you to join CDM, submit your data each month and evaluate the effectiveness of your treatment. If you don’t need a laser to be effective we would thank you for teaching us something new.
Laser Comparison
Since lasers are defined by their wave length we shall use this method for putting them in order. In general the longest wave length means the lease tissue penetration.:
CO2- (Carbon Dioxide) Wavelength 10.6 micrometers
Positives
With the longest wavelength, the CO2 is potentially the kindest, gentlest of the lasers
Safe for use by a dental hygienist
Since the laser generates only light and not heat, and does not touch the tissue it vaporizes the diseased tissue rather than cauterizes as would be the case with other lasers
Negatives
The original version the Luxar, had a large .8mm spot size and caused a carbon residue.
The laser is large and bulky compared to the smaller diodes. It must be wheeled around the office.
The articulated arm can be stiff and hard to direct.
Cost – around $40,000
Erbium YAG (Erbium Yttrium Aluminum Garnet)/ Waterlase (Erbium Chromium Yttrium Selenium Gallium Garnet) - Wavelength 2.78-2.94 Micrometers
Positives
Can be used for hard tissue/ cavity preparation in addition to soft tissue applications
Negatives
Since it can penetrate hard tissue it is dangerous to be used by a hygienist
Water cooling can be slower for perio application.
Cost - $50,000+
Note: Some CDM practices start by using the dentist’s laser and then when the program gets going, buy a separate laser for the hygienist.
ND YAG (Neodymium:Yttrium-Aluminum-Garnet – Millennium Periolase Wavelength 1.064 micrometers
Positives
LANAP procedure has been shown to be very effective for advanced periodontal disease, deep pockets
Can be used for LANAP procedure or more customary Laser Ablation much like a diode.
Negatives
LANAP procedure is expensive, usually $1500/quadrant and thus has limited acceptance
LANAP procedure is considered too risky for the dental hygienist. Cost- $60,000+
Note – Many Millennium practices that become CDM’s use the CDM training to train the hygienist to perform more customary and lower cost LAPT treatment thereby usually doubling productivity.
DIODE Gallium Arsenide .802-.904 Micrometers-
Positives
Smallest can usually be held in one hand
Does an effective job of ablation & bacterial reduction
Negatives
Uses heat cauterization similar to ND:YAG
Cost - $5,000-$15,000
Note: by far the least expensive is the favorite of new CDM’s. Also popular in multi-hygienist practices where one per hygienist is practical.
Data & Research
Comparison of STM, Arestin & The CDM Goals
The above chart shows effectiveness of treatment of 5+mm pockets. The data for SRP and Arestin were taken from the OraPharma brochure. The upper level shows the expectation for a CDM practice. Dr. Richards in fact achieved 82.5%
It shows that soft tissue management essentially does only about half the job
The above shows Dr. Richards results using a CO2 laser
The above chart shows a wide variety of research results.
The following are of interest:
The best results on deep pockets was SRP + Osseous graft
SRP + Widman Flap (perio surgery) was not superior to the millennium results.
On 7-9 mm pockets it would not be expected to offer a complete “cure”. A 3mm reduction would be the average of the best treatments.
Some other research papers
Effects of CO2 Laser Treatment on Fibroblast Attachment to Root Surfaces. A Scanning Electron Microscopy Analysis / Crespi, R / Barone, A / Covani, U / Ciaglia, R N / Romanos, G E 1308-1312 Journal of Periodontology 2002; 73 (4)
7th INTERNATIONAL CONGRESS ON LASERS IN DENTISTRY
Treatment of Periodontal Pockets with a Diode Laser – Moritz, Schoop et/.al. Lasers in surgery and Medicine 22:302-311 1998
Use of Lasers in Periodontal Treatment-Position Paper 2002
Statement Regarding Use of Dental Lasers for Excisional New Attachment Procedure (ENAP)
PRACTICAL SCIENCE Lasers in dentistry Separating science from hype
Douglas N. Dederich, BSEE, DDS, MSC, PhD, Ronald D. Bushick, DMD, PhD, MS, JADA February 2004
Sulcular Debridement with Pulsed Nd: YAG" Lasers in Dentistry January 2002
"Nd: YAG - Assisted Periodontal Curettage to Prevent Bacteremia Before Cardiovascular Surgery" Dentistry Today March 1998
110 CO2 Laser Decontamination Comparative bactericidal exposures for selected oral bacteria using carbon dioxide laser radiation Dederich DN, Pickard MA, Vaughn AS, et al. Lasers Surg Med 1990;10:591-594.
111 Microbiological Effects of Scaling and Root Planing Dr. Susan Kinder-Haake
112. HOW TO PROFIT FROM... lasers: Building your practice with lasers
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