Clarity™ Aligner Therapy as a Pre-Prosthodontic Tool for Minimally Invasive Rehabilitation

A clinical case by our Community member Dr. Silvana Thering

This article and its content are published under the Author’s responsibility as an expression of the Author’s own ideas and practice. StyleItaliano denies any responsibility about the visual and written content of this work.

A 36-year-old female patient presented in October 2024 with severe enamel and dentin wear affecting both the anterior and posterior dentition. The patient reported noticeable esthetic changes.

intraoral situation before treatment

Fig.1
Her chief complaint was to treat the wear of her frontal and posterior teeth. She also wanted her teeth to look better, whiter but still natural-looking.

lower arch erosion before treatment

Fig.2
Occlusal view of the mandible, showing severe dental wear in the posterior area.

upper worn teeth

Fig.3
Occlusal view of the maxilla, showing severe tooth wear affecting both the anterior and posterior dentition.

initial situation opt

Fig.4
Initial orthopantomography showing the worn dentition of this young patient.

Video.1
Video illustrating the treatment design. This simulation enables both the clinician and the patient to better understand the advantages and limitations of the proposed treatment.

aligners at the beginning of treatment

Fig.5
Beginning of the pre-prosthetic orthodontic treatment. The main treatment objectives were intrusion of the lower anterior teeth to create space for the ceramic restorations, correction of tooth misalignment, dental axes and gingival zeniths in the maxillary anterior region, and correction of the dental midline.

aligners at the end of treatment

Fig.6
Final outcome after 21 weeks of orthodontic treatment with Clarity™ Aligners. All treatment objectives were successfully achieved.

opt after orthodontic treatment

Fig.7
Orthopantomography after the Clarity Aligner therapy.

lower arch before and after orthodontic treatment

Fig.8
Initial and post-orthodontic treatment views of the mandibular anterior teeth.

before and after orthodontic alignment

Fig.9
Comparison between the treatment design and the clinical situation before and after Clarity™ Aligner therapy.

digital wax up showing result of final orthodontic alignment

Fig.10
Digital wax-up showing the superimposition of the wax-up and the post-orthodontic situation.

digital wax up for veneering

Fig.11
Digital wax-up—frontal view (overlay with the post-orthodontic situation). The minimum space required for the ceramic restorations was achieved through intrusion of the lower anterior teeth and repositioning of the remaining teeth.

digital wax up for mandibular veneering and overlays

Fig.12
Additive digital wax-up of the mandibular arch—occlusal view.

digital wax up for maxillary veneering and overlays

Fig.13
Additive digital wax-up of the maxillary arch—occlusal view.

after direct mock-up and gingivectomy

Fig.14
Gingivectomy and direct mock-up performed to improve tooth proportions.

mock up functionalization

Fig.15
Direct esthetic and functional mock-up. Functional movements, including protrusive and lateral excursions, were re-established with the aid of the mock-up.

Video.2
Video showing the worn mock-up and the clinical situation after preparation through the mock-up, allowing for a minimally invasive approach.

teeth after minimal preparation

Fig.16
Comparison between the post-orthodontic clinical situation and the minimally invasive tooth preparations in both arches.

veneers and overlays for lower arch

Fig.17
Ceramic restorations on a printed model. Feldspathic ceramic restorations were used from teeth 35 to 45, while monolithic lithium disilicate restorations were used for the molars.

veneers and overlays for upper arch

Fig.18
Ceramic restorations on a printed model. Feldspathic ceramic restorations were used from teeth 15 to 25, while monolithic lithium disilicate restorations were used for the molars.

esthetics of the lithium disilicate veneers and overlays before cementation

Fig.19
Lateral view of the all-ceramic restorations, demonstrating natural esthetic and functional integration.

veneers and overlays after cementation

Fig.20
Adhesive cementation of all ceramic restorations.

before and after upper arch

Fig.21
Comparison between the initial situation and the final outcome—frontal view of the maxillary arch.

before and after lower arch

Fig.22
Comparison between the initial situation and the final outcome—frontal view of the mandibular arch.

before and after intraoral view

Fig.23
Frontal comparison of the initial and final situations, highlighting the advantages of orthodontic pretreatment. This approach preserved an appropriate overbite while correcting the midline, dental axes, and gingival zeniths.

opt after veneering and overlay restoration

Fig.24
Final orthopantomography after Clarity™ Aligner therapy and prosthetic rehabilitation.

smile at the end of ortho prosthetic treatment

Fig.25

Conclusions

Through the integration of orthodontic treatment, this case demonstrates how conservative dentistry can achieve predictable functional and esthetic outcomes. Orthodontic alignment created the space required for restorative treatment without aggressive tooth reduction, enabling the use of modern ceramic materials within a minimally invasive, patient-centered approach that preserved natural tooth structure.

Bibliography

  1. Vaupel JW. Biodemography of Human Ageing. Nature 2010;464(7288):536-542.
  2. Schlueter N, Luka B. Erosive tooth wear – A review on global prevalence and on its prevalence in risk groups. Br Dental J 2018;224(5):364-370.
  3. Debora R. Vilaboa et al.. Tooth Wear The Quintessential Challenge. Quintessence Publishing 2023.
  4. Gresnigt M, Ozcan M. Esthetic rehabilitation of anterior teeth with porcelain laminates and sectional veneers. J Can Dent Assoc. 2011;77:b143.
  5. Francesco De Angelis, Camillo D’Arcangelo, Roberta Angelozzi, Mirco Vadini. Retrospective clinical evaluation of a no-prep porcelain veneer protocol. J Prosthet Dent. 2023 Jan;129(1):40-48.
  6. Camillo D’Arcangelo, Mirco Vadini, Maurizio D’Amario, Zaccheo Chiavaroli, Francesco De Angelis. Protocol for a new concept of no-prep ultrathin ceramic veneers. Journal of Esthetic and Restorative Dentistry. 2017;30(8).
  7. Pascal Magne, Joseph Hanna, Michel Magne. The case for moderate „guided prep“ indirect porcelain veneers in the anterior dentition. The pendulum of porcelain veneers preparation: from almost no-prep to over-prep to no-prep. The European journal of Esthetic Dentistry 2013;8(3).
  8. Amélie Karine Jacques Mainjot, Carole Charavet. Orthodontic-assisted one step- no prep technique: A straightforward and minimally-invasive approach for localized tooth wear treatment using polymer-infiltrated ceramic network CAD-CAM prostheses. J Esthet Restor Dent. 2020 Oct;32(7):645-661.
  9. Oudkerk J, Sanchez C, Grenade C, Vanheusden A, Mainjot A. The One-step No-prep technique for non-invasive full-mouth rehabilitation of worn dentition using PICN CAD-CAM restorations: Up to 9-year results from a prospective and retrospective clinical study. Dent Mater. 2025 Apr;41(4):414-424.

RELATED CASES

stages of direct cusp protection with composite

Restoring Structurally Compromised Teeth with a Direct Technique

A conservative direct approach to weakened cusps, focused on protection, preservation, and long-term stability.
cavity with crack

Molar Daily Challenge