COVID -19 update • Your health and well-being continues to be our top priority.

COVID -19 update • Your health and well-being continues to be our top priority.

(403) 382-2273

Infection control has always been a top priority for our practice, and you may have seen this during your visits to our office. Our infection control processes are made so that when you receive care, it’s both safe and comfortable.

Our office follows infection control recommendations made by the Alberta Dental Association and College (ADA&C), Health Canada and the Canadian Centre For Occupational Health and Safety (CCOHS).

We want to tell you about the infection control procedures we follow in our practice to keep patients and staff safe.

To ensure the health and wellbeing of our patients and team members, we have installed 2 different types of air purifiers at our dental office. Both of these are manufactured by the Canadian company, Surgically Clean Air.

Both of these filters perform their duties without being loud, (an industry-leading low level of about 55DB) or creating a “breeze” that can be uncomfortable for our patients. 

Some additional changes you may also see when it is time for your next appointment. For example:

We look forward to seeing you again and are happy to answer any questions you may have about the steps we take to keep you, and every patient, safe in our practice. To make an appointment, please call our office at (403) 382‑2273.

So come on in to get your dental work done and enjoy Surgically Clean Air! 

State-Of-The-Art Technology

Air-Flow Polishers For Hygiene

The AirFlow polishing technique eliminates the need for hand scaling during dental hygiene cleanings. It delivers controlled streams of powder, air, and water to get rid of deposits on the surfaces of the teeth. Unlike the typical polishing device, it can reach far and delicate spaces. It helps reduce stains left behind by tobacco, food, and beverages and is ideal for those with sensitive teeth or dental work, such as veneers.

air-flow polisher


CEREC stands for Chairside Economical Restoration of Esthetic Ceramics. This method allows your dentist to customize dental restorations in a single visit. These restorations include crowns, bridges, and veneers. Through CAD/CAM (computer-aided design and computer-aided manufacturing), your dentist can take impressions of your mouth using software, design a mold for your restoration, and mill it using equipment right at the dental office. The next step is fitting the device so your dentist can make necessary adjustments.


3D Cone Beam Scanner

This imaging device captures clear and detailed 3D images of your teeth, including the surrounding bones and tissues. The x-ray beam follows the shape of a cone, which explains its name. The images captured can be viewed and adjusted using software. Your dentist may recommend getting cone beam 3D imaging to determine which dental treatment is necessary for your case. The procedure is quick and painless and no special preparation is needed.

3d cone beam scanner

Intraoral Cameras In Every Room

Intraoral cameras are pen-like devices that capture high-resolution images of your mouth. They’re light and small and fit easily into the mouth, reaching even the back areas. The intraoral camera is connected to the computer screen, which allows you and your dentist to see images as they’re taken. Your dentist can detect any issue more easily and explain in greater detail the condition of your oral health. The images also help you understand your diagnosis better and make informed decisions for your dental care needs.

intraoral camera

Digital Impressions

Digital impressions use lasers and scanning devices to create a virtual model of the mouth, which you and your dentist can view using computer screens. Your dentist can analyze and adjust these impressions as needed in real-time. Once the digital impressions are ready, your dentist can also immediately forward them to the laboratory to fabricate your restoration or to other offices or specialists involved in your dental procedure. With the help of digital impressions, taking images of the mouth becomes a lot more comfortable for patients and the risk of human error is greatly reduced.

digital impressions

Use A Freezing Technique Specifically Designed For Those Who Have Trouble Getting Frozen.

Here at Cool Dental, we use a freezing technique for patients who are having difficulties getting numbed or achieving numbness before a dental procedure. There are different reasons why a person could be harder to freeze. We offer alternatives to make the procedure quicker and more comfortable.

Freezing Technique

Panoramic X-ray

Your dentist may request a panoramic X-ray on your first appointment. Panoramic X-rays capture your mouth in a single image. They include a view of your teeth as well as surrounding structures, such as the jaw and bones of the head and neck. Unlike other imaging technology, a panoramic X-ray is extraoral or taken outside of the mouth. It uses a film and an imaging machine that rotates around your head. The process is quick, easy, and painless, and the images can be used for up to 3-5 years.

panoramic X-ray machine

Cephalometric X-ray For Orthodontics

A cephalometric X-ray is an imaging tool that allows your dentist to capture a side view of your head. It shows the position of the teeth, jaw, and surrounding structures. Your dentist uses the images to assess jaw or bone growth, any broken or impacted teeth, as well as airway-related issues. Like the standard X-rays, cephalometric X-rays are also extraoral.

Cephalometric X-ray

Digital Intraoral X-rays

Digital intraoral X-rays are taken inside the mouth. The procedure uses a film or sensor to capture detailed images, and the images are then transferred to the computer. Your dentist can enhance the images and show them to you simultaneously. Intraoral X-rays come in different types, and your dentist may recommend getting one depending on the dental procedure that you need.

Digital Intraoral X-rays


The VELscope® Vx Enhanced Oral Assessment System is a wireless handheld device that uses fluorescence visualization to help detect irregularities in the mouth not visible to the naked eye.

Visual examinations during oral cancer screenings can only spot visible abnormalities, such as white or red spots in the mouth. The Velscope shines a bright blue light into the mouth to reveal lesions or any changes that the eyes alone won’t see. Healthy soft tissues in the mouth absorb the blue light and appear green on the screen while potential problem areas show up darker. This procedure is painless and can be completed in a few minutes.


3D Jaw Motion Sensor

K7 Technology

When facial muscles are stressed, your jaw loses its proper alignment. This can result in temporomandibular joint disorders or TMD.

The K7 technology allows us to measure the movement of your jaw and restore its ideal resting position. This evaluation system is composed of a computerized scanner, recorder, and analyzer.

The scanner identifies the speed at which your jaw moves, the recorder keeps track of electrical impulses that your jaw muscles emit, and the analyzer looks into clicking sounds your jaw makes.

The K7 technology can also develop 3D images of your jaw and mouth. Altogether, the system helps us determine whether there’s damage to your jaw joint.

K7 Technology

Jaw Tracking

Computerized jaw tracking involves the use of various technologies. This pain-free procedure allows us to recommend the right oral appliance for correcting a misaligned bite.

We perform EMG to track muscle movements. Then, we use the TENS unit to relax the nerves around your jawbone and teeth. Once your jaw muscles are fully relaxed, we go back to the EMG again.

The computer gathers all information, guiding us where to position the jaw and helping us create an effective oral appliance. Through computerized jaw tracking, we get 3D images of your mouth, and we’re able to complete the procedure in a much more comfortable manner for you.


A Transcutaneous Electrical Nerve Stimulation (TENS) unit sends a series of mild dose electrical shocks to the jaw muscles.

Here at Cool Dental, Dr. Lachman uses the TENS machine to relax the jaw and help it accept a new bite during implant procedures.

We start by measuring muscle activity using electromyography. Next, we place the TENS unit in a targeted position. After which, we use electromyography again to determine the ideal resting position of your jaw joints and muscles.

Once we have the most comfortable position for your jaw, we then fabricate an appliance in this exact measurement. This procedure helps relieve jaw pain and also improves your smile.



Electromyography or EMG assesses muscles and the nerve cells controlling them, called motor neurons. EMG sends electrical signals to relax muscles and delivers the signals as numbers or graphs.

The procedure involves placing small sensors on your skin to detect motor neuron activity. Needle electrodes are also inserted into the muscle tissue to monitor its activity.

Your dentist or doctor uses the information to diagnose the condition of your muscles. They may recommend getting EMG if you’re experiencing issues with muscle movements, such as numbness or weakness.

Here at Cool Dental, we use EMG, along with the TENS unit, to evaluate and diagnose jaw-related problems.



The Isolite is a multi-awarded hands-free suction and retraction unit. It’s a patented mouthpiece made of hypoallergenic, polymer material. It’s available in 6 different sizes, including one for children, to ensure a proper fit.

Isolite helps keep your mouth open during dental procedures. It also retracts the tongue, protects the cheek, and guards your airway. It eliminates the need for constant spitting as the suction removes liquid, keeping the mouth dry and preventing contamination.

Isolite is flexible and is easy to fit into the mouth. It also provides a place to rest your jaw. Overall, it helps improve safety and enhances productivity during procedures.



From dental implants to dentures,

see some successful cases by Dr. Karstan Lachman

before and after photo of patient smiling 1
before and after photo of patient smiling 2
before and after photo of patient smiling 3

More Before & Afters

lobby of Lethbridge dentist

Are you ready for a new dental experience?


Phone: (403) 382-2273

[email protected]
1917 Mayor Magrath Dr S #10
Lethbridge, AB T1K 2R8


Monday - Friday7:00am - 3:00pm

All Services Provided By General Dentists

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