7th Scientific Congress of the DGAO for Aligner Orthodontics

Sophia Weber, Ulm (Germany)

Sophia Weber
  • Specialist registrar in orthodontics, born on 06 April 1992
  • 2011 A levels in Ettenheim
  • 2012-2018 Study of dentistry at the university of Ulm
  • 2017 – 2018 Research assistant in the orthodontic department of the university of Ulm
  • 2018 State examination and license to practice as a dentist
  • 2018 - 2019 Dentist in a dental practice in Lahr
  • 2019 – present Specialist registrar in orthodontics and doctoral student at the university of Ulm with Professor Dr. Dr. Bernd Lapatki
    Title of doctoral thesis: “Influence of different aligner modifications on the capability of PET-G aligners to induce labio-palatal bodily movement of an upper central incisor”

Biomechanical comparison of different aligner modifications to the palatal movement of incisors

The majority of studies to date indicate that the forces and moments applied by aligners without modifications are insufficient for physical tooth movement. The aim of our in-vitro study was to investigate different modifications of physical tooth movement with simulated palatal incisor movements. The experimental setup consisted of an upper jaw model with separated tooth 11, which could be mounted on a 3D F/M sensor and moved by a hexapod. PET-G aligners (Duran®, Scheu-Dental) with three negative shapes (sphere, cylinder or crescent) with different depths (0.5 to 2.0 mm) attached in the model were investigated. All modifications investigated were able to generate moments that counteract tilting. This in-vitro data indicates the potential of modified aligners for physical labio-palatal or torquing incisor movements. However, this hypothesis still has to be proven with clinical studies.

SATURDAY, March 6th, 2021, 11.50 am - 12.10 pm