What Tips Can Dentists Offer for Taking Accurate Dental Impressions?
Dentist Magazine
What Tips Can Dentists Offer for Taking Accurate Dental Impressions?
Getting dental impressions right the first time is crucial for both patient comfort and treatment effectiveness. In this article, seasoned dentists and general dentists share their top insights to help you master this essential skill. The first tip emphasizes preparing the patient to minimize movements, while the final advice highlights the importance of choosing the proper tray and avoiding overloading, with a total of five expert insights offered. Read on to discover all the invaluable tips from these experienced professionals.
- Prepare Patient to Minimize Movements
- Ensure Proper Tray and Technique
- Keep Patient's Mouth Completely Dry
- Select Right Tray and Load Correctly
- Choose Proper Tray and Avoid Overloading
Prepare Patient to Minimize Movements
As an experienced dentist, I've found that patient preparation is key to getting a perfect impression the first time. Before taking the impression, I ensure the patient is as relaxed as possible, as tension can affect how they position their mouth. I also explain each step of the process so they know what to expect, which helps minimize unexpected movements.
Another important factor is selecting the right tray size and material for each patient. The tray should cover all necessary areas while still being comfortable, so I take a few moments to test it before proceeding. This small step avoids common issues, like distortions from an overly tight tray. I also ensure the material is mixed to the correct consistency—firm enough to capture fine details but not so thick that it’s uncomfortable for the patient.
Lastly, I pay close attention to seating the impression tray properly. I start by pressing down evenly and checking alignment to capture a full and accurate representation of the teeth and gums. A little patience at this stage goes a long way in avoiding the need for retakes, saving time for both the patient and the practice.
Ensure Proper Tray and Technique
Taking accurate impressions on the first try requires attention to several key details. Selecting the right tray and technique, using a hydrophilic material, and choosing the appropriate retraction cord are crucial steps. Additionally, ensuring that your assistant applies light air pressure while placing the light-body material helps it spread evenly, contributing significantly to achieving a successful impression.
Keep Patient's Mouth Completely Dry
A critical step for getting an accurate dental impression on the first try is ensuring that the patient's mouth is completely dry before starting. Moisture can interfere with the impression material, causing it to distort or slip, which often leads to the need for a second try. I use cotton rolls and a gentle air-stream to keep the area dry, paying special attention to any spots prone to excess saliva, like around the molars.
After that, I communicate with the patient, letting them know the importance of staying still and relaxed during the process. I even ask them to practice gently closing their mouth with the tray in place before we start. This way, they're prepared for the sensation, which reduces movement and gives us a cleaner impression.
This approach has made a noticeable difference in the accuracy of our impressions and has helped us avoid remakes, saving time and improving the patient's experience. It's a small but essential step that ensures we capture the most precise details needed for effective treatment planning.
Select Right Tray and Load Correctly
Dr. Avni Goel is an experienced general dentist with over a decade of practice in both the U.S. and India. A summa cum laude graduate of Temple University's Kornberg School of Dentistry, Dr. Goel is dedicated to providing comprehensive dental care. She now practices in Houston, TX, combining clinical expertise with business acumen.
One Piece of Advice from Dr. Avni Goel
Taking accurate dental impressions is crucial for successful dental procedures, and Dr. Avni Goel offers valuable advice for getting it right on the first try. According to Dr. Goel, selecting the right tray and positioning it properly are key. "The tray should fit snugly in the patient’s mouth, covering the area without causing discomfort," she explains. This ensures all details of the dental arch are captured accurately.
Dr. Goel also stresses the importance of loading the impression material correctly. "Avoid overfilling or underfilling the tray," she advises. Too much material can spill, while too little can result in missing important details.
Additionally, confirming the patient’s bite and jaw position beforehand is essential. Dr. Goel recommends ensuring the patient bites down naturally, without tension, for the most accurate impression. With the right technique, equipment, and a calm, focused approach, dental professionals can achieve high-quality impressions, saving both time and effort.
Choose Proper Tray and Avoid Overloading
I'm a Harvard-trained orthodontist. Taking impressions is a very common task in our field. After more than 15 years of taking impressions, here are my tips for getting it right the first time:
1) Select the right tray size - Having a properly fitted tray ensures that you capture all the necessary anatomy. Before adding the impression material, try the tray inside the patient's mouth to make sure it covers all the teeth without touching them or being too loose. This also gives the patient a chance to try the tray before the impression material is added.
2) Avoid overloading the tray to minimize the patient's gag reflex - Gagging occurs when the impression material has low viscosity or flows out the back of the mouth. For alginate, ensure the correct water-to-powder ratio. Use enough material to capture everything needed, but not so much that it overflows posteriorly. The material should be applied smoothly and evenly across the tray to prevent voids or bubbles, which can lead to remakes.
3) Allow sufficient time - Let the material fully set according to the manufacturer's instructions; removing it prematurely will require you to start over. When it's time to remove the tray, break the seal of the teeth from the impression with a finger on the right and left posterior with a quick, firm motion. One sign of a good impression is a good seal when removing the tray.
4) Ensure the tray is centered and into the mouth enough - Confirm that the handle of the impression tray extends straight forward from the midline of the patient's face. This ensures the posterior teeth on each side do not contact the sides of the tray. Place the tray far enough into the patient's mouth so there is less than a centimeter between the front teeth and the tray.
5) Do post-impression review - Inspect the impression to confirm all needed details are captured, including the margins, soft tissues, and dental anatomy. If any issues are found, it's better to redo the impression than to send an incomplete or inaccurate model to the lab.
Technology in dentistry has come a long way. While impressions are still common, we've embraced digital scanners as well. They provide an accurate, comfortable alternative and reduce the need for retakes. Traditional impressions still have their place, however, especially when an alginate impression is needed for fast turnaround.
