Recent advances in digital dentistry have paved the way for the use of computer-aided design (CAD) technology in the modern orthodontic practice. Today, a 3-dimensional (3D) digital model, produced with an intraoral scanner, can be easily manipulated to perform the necessary measurements to facilitate diagnosis and treatment planning. In addition, digital technology eliminates the need for storage space and makes the retrieval and transfer of the models easier.
In the study of Colea et al., published on the American Journal of Orthodontics and Dentofacial Orthopedics, 24 models were taken, both with traditional anagogic techniques (alginate impressions) and with intra-oral scanners (two groups). The first group the retainer was thermo formed while a digital printer was employed for the second group and third group using an STL file.
Average differences of the conventional vacuum-formed retainers ranged from 0.10 to 0.20 mm. The commercially available and 3D-printed retainers had ranges of 0.10 to 0.30 mm and 0.10 to 0.40 mm, respectively.
The traditional vacuum-formed retainers had the least amount of deviation from the original model. 3D-printed retainers are good alternatives to the traditional vacuum-formed retainers. Retainers may be successfully 3D printed with the use of stereolithography technology.
Digital Dentistry 08 May 2019
Author: Rafi Romano
The following clinical case presents complex aesthetic and functional case of sever deep bite with relapse of previous orthodontic treatment in childhood, combined...
Orthodontics 17 April 2019
Orthodontics 06 February 2019
Where: Amsterdam (Netherlands).When: on June 20-23, 2019. Topic: Periodontology and Implantology. For additional informations: https://www.efp.org/europerio9/index.html
Author: Riccardo Mauro Bonacina
Patient AB, a 46-year-old male, comes to our observation complaining of an increase in volume at the palatal level for about a month. The systemic anamnesis...