Digital model superimpositions: are different software algorithms equally accurate in quantifying linear tooth movements?

Adel, Samar M.; Vaid, Nikhilesh R.; El-Harouni, Nadia; Kassem, Hassan; Zaher, Abbas

doi:10.1186/s12903-022-02129-x

Cited by 22 publications

(21 citation statements)

References 40 publications

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“…Geomagic Control X (3D systems, Rock Hill, USA) software was used to set the reference plane using the dimples in the initial scan model [ 19 , 20 ]. Then, five interproximal surfaces were set from the canine to the contralateral canine.…”

Section: Methodsmentioning

confidence: 99%

Accuracy and stability of computer-aided customized lingual fixed retainer: a pilot study

et al. 2022

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Background With advances in digital technology, new types of lingual fixed retainers are being developed. However, there are few studies that quantitatively evaluate the accuracy and stability of lingual fixed retainers. The aim of this study was to assess the accuracy and stability of two types of computer-aided customized lingual fixed retainers and a conventional lingual fixed retainer. Methods A total of 10 maxillary and 10 mandibular duplicated dental models were selected, and then, three types of retainers were fabricated on the canine-to-canine area for each model. To evaluate accuracy, wire clearance at interproximal area (WCI) was measured using superimposition analysis. Initial flatness deformation was also measured for vertical distortion of retainers. Lateral width, anteroposterior length, and flatness deformation were measured at three-time points for stability assessment. Thermocycling was used to induce 6 months of time flow. Results The custom-bent group showed significantly higher WCI than the custom-cut and manual groups in the maxillary arch (P = 0.002). The custom-cut group showed significantly less flatness deformation, which was followed by the custom-bent and manual groups in both the maxillary and mandibular arch (P < 0.001). There was no significant difference in stability between the three retainer groups during 5100 cycles of thermocycling (corresponding to 6-month period). Conclusions Since there was no difference in stability between the three groups, it is recommended to use custom-cut type retainers in light of accuracy. However, accuracy and stability are not the only factors to consider when selecting type of retainers. Because each retainer has advantages and disadvantages, the type of retainers should be decided in consideration of the clinical environment.

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Section: Methodsmentioning

confidence: 99%

Accuracy and stability of computer-aided customized lingual fixed retainer: a pilot study

et al. 2022

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“…To quantify the amount of tooth movement by CAT, 2D lateral cephalograms and different digital model registration software have been utilized. 16 , 17 …”

Section: Introductionmentioning

confidence: 99%

“…15 To quantify the amount of tooth movement by CAT, 2D lateral cephalograms and different digital model registration software have been utilized. 16,17 This case report describes a case with an effective staging protocol and attachment geometry planning with the Invisalign system in an attempt to correct class II malocclusion in an adult patient.…”

Section: Introductionmentioning

confidence: 99%

Distalization using efficient attachment protocol in clear aligner therapy—A case report

Sabouni¹,

Pandian

Vaid

et al. 2023

Clinical Case Reports

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To describe an esthetic orthodontic treatment using aligners in an adult patient with dental class II malocclusion associated with crowding. A 25-year-old female patient with skeletal class I, bilateral class II relation, increased overjet and overbite and crowding in both arches presented for orthodontic treatment. The patient refused conventional fixed multibracket treatment in favor of aligners. Pre-and post-treatment records are presented. Treatment objectives were achieved in 10 months, and the patient was satisfied with the functional and esthetic outcomes. Combining aligners with appropriate attachment location and geometry is an efficacious means of resolving orthodontic issues such as class II malocclusion in a time frame comparable to that of conventional fixed orthodontics.Staging in distalization increases the predictability of movement. Furthermore, this system is associated with optimal oral hygiene and excellent esthetics.

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“…[1][2][3] Although clear aligners have become widely utilized, there is a paucity of scholarly research testing this treatment modality. [4][5][6][7][8][9] Contrary to expectations, orthodontic products are often clinically adopted without appropriate clinical evidence. However, if the specialty has to obtain precision and proficiency with this modality, a thorough investigation of existing clear aligner literature is imperative.…”

Section: Introductionmentioning

confidence: 99%

Clear aligner therapy in contemporary orthodontics: A scoping review of scholarly literature

Adel

Hansa

Vaid

2023

APOS

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Background: Over the last two decades, clear aligners have become a mainstay in contemporary orthodontic practice primarily due to improvements in digital and 3D printing technologies, a growing interest in esthetic orthodontics, especially in the adult population, and aggressive manufacturer marketing internationally. Material and Methods: PubMed, Google Scholar, Cochrane Library, and EMBASE databases were searched from January 1998 to November 2021. The search terms used were “Invisalign” OR “clear aligner.” A total of 7000 records were searched, of which 369 potentially relevant articles were retrieved in full. 190 studies met the selection criteria following screening and were included in the scoping review. Results: This review scopes and analyses published orthodontic literature about CA according to a year-wise distribution into 3 groups, 2001–2010/2011–2020/2021. Most of the studies were published in the period between 2011 and 2020, with 138 studies accounting for 73%. The year 2021 followed, with 31 studies accounting for 16%, which was greater than the number of studies published in 10 years from 2001 to 2010. Studies were also classified based on the study designs with most of the published studies representing the lowest level of evidence including case reports, case series, narrative reviews, expert opinions, and editorials accounting for 137 studies, whereas case-control studies were the least reported studies with only 4 studies reported in the literature. In addition, they were categorized into seven main domains: (1) Biological considerations associated with clear aligner therapy (CAT), (2) Treatment outcomes considerations associated with CAT, (3) Geometrical considerations associated with CAT (clinical), (4) Biomechanical considerations associated with CAT (Laboratory/Finite element analysis), (5) Biomaterial considerations associated with CAT, (6) Patient education and experience and aesthetic and social perception of CAT, and (7) Miscellaneous. Treatment outcome considerations associated with CAT had the greatest percentage representing 36% of the total published domains, while the final place was occupied by the biomechanical considerations associated with CAT accounting for only 4% of the published domains about CAT. Conclusion: Treatment outcome was the domain most commonly reported by studies accounting for (36%). Most of the published studies are at the lowest level of evidence including case reports, case series, narrative reviews, and expert opinions. The vast majority of studies utilized only a single clear aligner brand. There is a greater need for research that studies CAT from a holistic perspective.

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Digital model superimpositions: are different software algorithms equally accurate in quantifying linear tooth movements?

Cited by 22 publications

References 40 publications

Accuracy and stability of computer-aided customized lingual fixed retainer: a pilot study

Accuracy and stability of computer-aided customized lingual fixed retainer: a pilot study

Distalization using efficient attachment protocol in clear aligner therapy—A case report

Clear aligner therapy in contemporary orthodontics: A scoping review of scholarly literature

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