The procedure with brackets was at the time a great invention for decades, metal orthodontics allowed to solve dental alignment problems with great effectiveness worldwide, but had aesthetic disadvantages in the smile during the time of treatment, poor dental hygiene, damage to the gums and discomfort that caused discomfort in the patient's life. These factors for improvement were the impetus in the creation of invisible orthodontics.
In 1945, Harold D. Kesling, an American orthodontist, created a custom-designed, removable appliance that looked and functioned like a mouthguard. Made of rubber, it is known as a Dental Positioner and was the first non-metallic, removable appliance for straightening teeth. Compared to braces, the dental positioner accelerated the process of dental correction and was used in the final and retention phase of orthodontic treatment.
In the history of invisible orthodontics, Harold D. Kesling was the first great visionary, proposing the idea on which contemporary invisible orthodontics is based to use serial splints, one for each stage of treatment, in order to achieve more efficient tooth movement.
In the 1960s, plastic splints began to be used, and later one-piece silicone splints, which allowed small dental corrections to be made.
Henry Nahoum introduced the first transparent thermoplastic appliance capable of moving teeth. Based on his concept, Robert Ponitz developed the first invisible retainer in the 1970s, which was improved by James A. McNamara in the 1980s.
Polycrystalline alumina was developed in 1980 through a research project. This tough, soft and transparent material, which was used to create infrared antennas in missile trackers, is a technical ceramic material characterized by its hardness, resistance to wear, erosion, corrosion and high temperatures. It is used in a wide variety of industrial applications, such as in the aerospace and defense industries, in laboratory temperature measurement or in high-temperature chemical analysis.
In 1993, U.S. orthodontist John Sheridan designed the Essix retainer, which refined similar appliances developed in the previous decade.The braces were customized to induce different tooth movements. While the Essix retainer is still in use, it can only move teeth a limited distance.
Prototyping was critical to the success of the invisible aligners, as it allowed the developers to iterate and refine the design prior to mass production. Through continuous testing and feedback, aspects such as comfort, esthetics and treatment efficacy were fine-tuned.
In addition, prototyping facilitated communication between designers, dentists and patients, ensuring that all parties involved could understand and validate the final product. This user-centered approach, combined with advanced modeling and manufacturing technologies, made it possible to deliver an innovative orthodontic solution that has transformed the patient experience.
In conclusion, the importance of prototypes in the development of invisible aligners lies in their ability to improve design, validate concepts and ensure a final product that meets market needs, thus contributing to their great success.