Korean J Orthod.  2021 Jul;51(4):293-300. 10.4041/kjod.2021.51.4.293.

Effectiveness of Invisalign^® aligners in the treatment of severe gingival recession: A case report

• Figueiredo MAd
• Romano FL
• Feres MFN
• Stuani MBS
• Nahás-Scocate ACR
• Matsumoto MAN

• KMID: 2518522
• DOI: http://doi.org/10.4041/kjod.2021.51.4.293

Abstract

In this report, we demonstrate the effectiveness of the Invisalign^® system in the treatment of severe gingival recession and bone dehiscence through torque, translation, and intrusion movements in a young woman. Cone-beam computed tomography was used to assess bone parameters and check the teeth during treatment. The root of the mandibular right central incisor, which was buccally positioned and exhibited bone dehiscence of 9.4 mm, was moved toward the center of the alveolar process by using the Invisalign^® system and SmartForce^® features. The patient was monitored by a periodontist throughout the orthodontic treatment period. Her gingival recession reduced, while the bone dehiscence reduced from 9.40 mm to 3.14 mm. Thus, movement of the root into the alveolus promoted bone neoformation and treated the gingival recession. The findings from this case suggest that orthodontic treatment using the Invisalign^® system, along with periodontal monitoring, can aid in the treatment of gingival recession and alveolar defects.

Keyword

Aligners; Gingival recession; Case report; Tooth movement

Figure

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  Figure 1 A, Intraoral frontal view (before treatment) showing severe gingival recession on the buccal surface of the mandibular right central incisor (tooth #41). B, Occlusive view of the mandibular arch, with a fixed retainer bonded on the six mandibular anterior teeth.

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  Figure 2 A, Facial cone-beam computed tomography. B, ANB angle = 3°, 1.NA for tooth #21 = 20°; 1.NB for tooth #31= 30°. ANB, the angle formed by the lines Nasion to point A and Nasion to point B; 1.NA, the angle formed by the long axis of the upper incisor and the line Nasion to point A; 1.NB, the angle formed by the long axis of the lower incisor and the line Nasion to point B.

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  Figure 3 A, 1.NB for tooth #41 = 21°. B, Axial views of tooth #41. C, Bone dehiscence = 9.40 mm for tooth #41 (before treatment). D, Bone dehiscence = 3.14 mm for tooth #41 (after treatment). 1.NB, the angle formed by the long axis of the lower incisor and the line Nasion to point B.

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  Figure 4 Occlusal view of the three-dimensional model showing the occlusal contacts before orthodontic treatment. The mandibular right central incisor (tooth #41) shows enhanced contact.

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  Figure 5 Intraoral frontal view 5 months after the beginning of treatment. The Invisalign® clear aligners are inserted.

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  Figure 6 Intraoral frontal view at the end of treatment with Invisalign® clear aligners.

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  Figure 7 Angle formed by the tooth’s long axis and symphysis base. A, Initial examination, angle = 77.8°. B, Final examination, angle = 66.1°; Distance from the tooth apex to the posterior limit of the symphysis. C, Initial examination, distance = 9.31 mm. D, Final examination, distance = 6.08 mm. Distance from the tooth apex to the lower limit of the symphysis. E, Initial examination, distance = 17.63 mm. F, Final examination, distance = 17.22 mm.

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