You’ve probably heard others complain about putty impressions at the orthodontist as recently as five years ago. These impressions were notorious for triggering gag reflexes and leaving a horrible, lasting taste. Fortunately, putty impressions are now a thing of the past. Today, orthodontists have access to high-tech digital impression machinery, which has drastically changed the experience of getting impressions taken. If you’re curious about how digital impressions have transformed orthodontic treatment, Dr. Amir Davoody, Dr. Rana Mehr, and Dr. Panagiotis Kyteas at Greater Houston Orthodontics can provide valuable insights.
What’s the Difference Between Traditional and Digital Impressions?
So, the obvious difference here is that one of these methods involves putting a chemical-tasting goop into the patient’s mouth and holding it there for minutes on end, often having the patient sit still. This impairs breathing, and movement, and can trigger gag reflexes and mild choking.
The traditional dental impression has some constraints. It must deal with moisture well, so typically consideration for water-friendly versus water-repellent is important on a case-by-case basis. The material must also remain stable after the chemical reaction which sets the impression in the mouth. These basic requirements for a safe and effective impression lead to uncomfortable consistencies and taste. Most polymers used for traditional impressions are hydrophilic polyether, vinyl polysiloxane (VPS), and hybrid VPES.
Digital impressions are completely computerized. There are no words that sound like a high school chemistry flashback, and they don’t impair breathing or cause gagging. The highly advanced camera technology allows for accuracy and speed that was previously impossible with chemical impression technology.