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Related Experiment Video

Updated: Sep 6, 2025

Author Spotlight: 3D Movement Assessment of Maxillary Posterior Teeth in Clear Aligner Treatment
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Clear aligners with differentiated thickness and without attachments - A case report.

Alessandra Putrino1, Maria-Rosaria Abed2, Carlo Lilli3

  • 1DDS, Specialist in Orthodontics, PhD Researcher, Post-doc Programme in New Technologies and Law at MICHR - "Mediterranea International Centre for Human Rights Research", Reggio Calabria; Università degli Studi di Roma "La Sapienza".

Journal of Clinical and Experimental Dentistry
|June 29, 2022
PubMed
Summary
This summary is machine-generated.

This study shows that clear aligners without attachments, using features like divots and varied thickness, effectively treat dental crowding and proclination. This approach offers a viable alternative to traditional orthodontic methods.

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Area of Science:

  • Orthodontics
  • Biomaterials Engineering

Background:

  • Traditional clear aligner systems often rely on attachments and specific margin designs for tooth movement.
  • Emerging research explores alternative strategies, including extended margins, divots, and varied aligner thickness, for enhanced efficacy and biological advantages.

Observation:

  • A case study involved a 23-year-old female with significant incisor proclination and moderate crowding.
  • Treatment utilized weekly replaced clear aligners featuring differentiated thickness (soft and hard), divots instead of attachments, and a straight margin extending beyond the gingival margin.

Findings:

  • The orthodontic therapy was completed in 5 months using 40 aligners (20 soft, 20 hard per arch).
  • No refinements were necessary, indicating high treatment predictability.
  • The novel aligner design successfully corrected pronounced proclination and moderate crowding.

Implications:

  • Clear aligners incorporating divots and differentiated thickness, without traditional attachments, present a promising alternative in orthodontic treatment.
  • This approach may offer a more streamlined and potentially biologically advantageous method for managing complex malocclusions.
  • Further research into appliance design variations can optimize clear aligner therapy outcomes.