Class II malocclusion correction with Invisalign: Is it possible?

Patterson, Brian D.; Foley, Patrick F.; Ueno, Hiroshi; Mason, Sharon A.; Schneider, Patrícia Pigato; Kim, Ki Beom

doi:10.1016/j.ajodo.2020.08.016

Cited by 67 publications

(48 citation statements)

References 17 publications

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“…The grinding of all premature contacts on the appliance in the area of the occlusal pads on the second molars and the upper anterior teeth will lead to a slight, counter-clockwise rotation of the mandible which, in turn, improves the canine relationship and the overjet minimally. Remaining differences with respect to the individual treatment planning, as represented by the target set-up, amounting to a mean 0.16 mm/0.06 mm (canine relationship/overjet) and a maximum under-correction of 1.0 mm, are clinically acceptable, which emphasises the performance potential of fixed orthodontic appliances for the correction of Angle Class II malocclusions in adult patients, compared to approaches employing removable appliances [ 60 ].…”

Section: Discussionmentioning

confidence: 99%

Class II correction by maxillary en masse distalization using a completely customized lingual appliance and a novel mini-screw anchorage concept – preliminary results

Beyling¹,

Klang²,

Niehoff

et al. 2021

Head Face Med

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Background The aim of the study was to evaluate the efficacy of a novel en masse distalization method in the maxillary arch in combination with a completely customized lingual appliance (CCLA; WIN, DW Lingual Systems, Germany). Therefore, we tested the null-hypothesis of a significant deviation from an Angle-Class I canine relationship and a normal overjet defined by an individual target set-up after dentoalveolar compensation in Angle Class II subjects. Methods This retrospective study included 23 patients, (m/f 3/20, mean age 29.6 years (min/max, 13.6/50.9 years)), with inclusion criteria of an Angle Class II occlusion of more than half a cusp prior to en masse distalization and treatment completed consecutively with a CCLA in combination with a mini-screw (MS) anchorage for uni- or bilateral maxillary distalization (12 bilateral situations, totalling 35). Plaster casts taken prior to (T0) and following CCLA treatment (T3) were compared with the treatment plan / set-up (TxP, with a Class I canine relationship and a normal overjet as the treatment objective). MSs were placed following levelling and aligning (T1) and removed at the end of en masse distalization at T2. Statistical analysis was carried out using Schuirmann’s TOST [two one-sided tests] equivalence test, based on a one-sample t-test with α = 0.025 on each side (total α = 0.05). Results Ninety-seven percent of planned correction of the canine relationship was achieved (mean 3.6 of 3.7 mm) and also 97 % of the planned overjet correction (mean 3.1 of 3.2 mm), with a statistically significant equivalence (p < 0.0001) for canine relationship and overjet between the individual treatment plan (set-up) and the final outcome. Adverse effects were limited to the loss of n = 2 of 35 mini-screws. However, in each instance, the treatment was completed, as scheduled, without replacing them. Accordingly, the null-hypothesis was rejected. Conclusions The technique presented allows for a predictable correction of an Angle-Class II malocclusion via dentoalveolar compensation with maxillary en masse distalization.

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Section: Discussionmentioning

confidence: 99%

Class II correction by maxillary en masse distalization using a completely customized lingual appliance and a novel mini-screw anchorage concept – preliminary results

Beyling¹,

Klang²,

Niehoff

et al. 2021

Head Face Med

View full text Add to dashboard Cite

show abstract

“…To achieve that, there should be no space between occluding posterior teeth during centric occlusion. 1 An occlusal relationship is a parameter to that the surrounding periodontal tissues will be healthy after the treatment was ended. 15 The last parameter to be measured is the root angulation.…”

Section: Resultsmentioning

confidence: 99%

“…That's one of the main reasons clear aligners are in high demand. 1 Since the launch of Invisalign ® in 1999, the system (Align Technology, Santa Clara, Calif) has become a popular treatment choice for clinicians because of the esthetics and comfort of the removable clear aligners compared with traditional appliances. The system utilizes 3dimensional graphic imaging and computer-aided design/computer-aided modeling (CAD-CAM) techniques to fabricate aligners for the patient.…”

Section: Introductionmentioning

confidence: 99%

Current Trend in Research About Invisalignâ® Success Outcome: A Systematic Review Using Prisma Guideline

Zakyah

Laviana

2021

ODONTO : Dental Journal

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Background: While some researches have claimed that InvisalignÂ® is successful in creating meaningful tooth movement, there is still no comprehensive literature review that summarizes them using one valid and reliable parameter. American Board of Orthodontics-Model Grading System (ABO-MGS) is an objective measurement for the success of orthodontic treatment. This systematic review is determined to provide scientific pieces of evidence to prove the truth of the claim using ABO-MGS. Method: English-based health sciences journal databases were searched using "Invisalign" and "Model Grading System". The databases included in this study were Pubmed, Ebscohost, Google Scholar, ScienceDirect, and MEDLINE. Inclusion criteria were clinical cross-sectional, cohort, or case-control study using human subjects who finished Invisalign treatment. Two independent authors summarized the data from the obtained articles using predefined data fields and discussed the data result together. Result: Out of 60 studies found during the identification process, only 6 studies were included in the qualitative analysis. Only one of them studied the efficacy of InvisalignÂ® by using ABO-MGS to measure the pre- and post-treatment model. InvisalignÂ® mostly successful in creating change for alignment, overjet, and interproximal contact. Other categories were not that successful to be treated with Invisalign. Conclusion: InvisalignÂ®â€˜s success is mostly pursued by correcting the malocclusion in the anterior region. Given the scarce amount of reliable evidence available, it is suggested that more studies are required to be able to draw a further conclusion.

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“…[19] also concluded that conventional attachments and the combination with optimized attachments equally led to treatment effectiveness regarding the total PAR score reduction with equally achieved effectiveness in mild, moderate, and rather severe cases. However, for Class II malocclusion, Patterson et al [31] reported that there was no significant Class II correction or overjet reduction with elastics for an average of 7-month duration in the adult population. Additional refinements may be necessary to address problems created during treatment mainly posterior open bite.…”

Section: Discussionmentioning

confidence: 99%

Effectiveness and Stability of Treatment with Orthodontics Clear Aligners: What Evidence?

Sahim¹,

Quars²

2022

Current Trends in Orthodontics

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Clear aligners, as a transparent and removable appliance, offer an alternative to conventional fixed appliance to patients with high demands for esthetics and comfort. Only a few investigations have focused on the efficacy of clear aligner therapy in controlling orthodontic tooth movement. Furthermore, the stability after treatment has not been thoroughly investigated. The purpose of this chapter was to update the knowledge of the available evidence about effectiveness and stability of clear aligners in non-growing subjects. Searches was made in different databases from January 2015 to January 2021. Relevant articles that met the inclusion criteria were selected. The level of evidence of the studies was moderate. The vertical movements of tooth were difficult to accomplish. Mesiodistal tipping showed the most predictability (82.5%) followed by vestibulolingual tipping. Molar distalization was also recorded as the highest accuracy. Derotation was difficult to accomplish with aligners especially of rounded teeth. The effectiveness of aligners in achieving the simulated transverse goals was 45%. The stability of clear aligner therapy was assessed by only two studies. Refinements are likely needed in almost all cases and to ensure treatment stability a retention period using a specific protocol is necessary.

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Class II malocclusion correction with Invisalign: Is it possible?

Cited by 67 publications

References 17 publications

Class II correction by maxillary en masse distalization using a completely customized lingual appliance and a novel mini-screw anchorage concept – preliminary results

Class II correction by maxillary en masse distalization using a completely customized lingual appliance and a novel mini-screw anchorage concept – preliminary results

Current Trend in Research About Invisalignâ® Success Outcome: A Systematic Review Using Prisma Guideline

Effectiveness and Stability of Treatment with Orthodontics Clear Aligners: What Evidence?

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