Unveiling the Orthodontic Debate
The orthodontic world has been abuzz with the debate between Invisalign aligners and traditional fixed appliances for years. This study dives deep into the intricacies of both treatments, shedding light on their effectiveness and outcomes.
The Source Article Details
Differences in finished case quality between Invisalign and traditional fixed appliances. by Eric Lin et al. in 2022.
Cited By: 21 (Updated: September 9, 2023)
The Source Article's Abstract
OBJECTIVES: To compare the treatment and posttreatment effects of Invisalign aligners that incorporated SmartForce features and attachments to traditional fixed appliances.
MATERIALS AND METHODS: This randomized controlled trial included 66 patients, 32 aligners, and 34 fixed-appliance patients. The median ages of the aligner and braces patients were 26.7 (interquartile range [IQR]: 9.8) and 25.9 (IQR: 16.6) years, respectively. Pretreatment occlusion was assessed using the ABO Discrepancy Index. Posttreatment (T1) and 6-month retention (T2) occlusions were quantified using the ABO Objective Grading System (OGS) scores.
RESULTS: The braces group finished treatment significantly (P < .001) earlier (0.4 years) than the aligner group. The median DI scores for the aligner and braces groups were 4.5 and 7.0, respectively, which was a statistically significant (P = .015), but clinically insignificant, difference. There were no statistically significant between-group differences for the total OGS scores or any of the individual component scores at debond (T1) or after 6 months of retention (T2). During the posttreatment period, alignment and overjet worsened significantly in the aligner group, while buccolingual inclinations and occlusal relations improved. Over the same period, alignment worsened in the braces group and buccolingual inclinations improved. There was no statistically significant between-group difference in posttreatment changes of the total OGS scores.
CONCLUSIONS: While patients with simple malocclusions require 4.8 months longer treatment times with aligners than traditional braces, the treatment and 6-month posttreatment occlusal outcomes are similar.
Citing the Source Article (APA)
Lin, E., Julien, K., Kesterke, M., Buschang, P.H. (2022). Differences in finished case quality between Invisalign and traditional fixed appliances.. The Angle orthodontist, 92(2), 173-179. 10.2319/032921-246.1
The Participants and Methodology
This randomized controlled trial scrutinized the treatment outcomes of 66 patients, with a near-even split between those using Invisalign aligners and traditional braces. The study meticulously assessed pretreatment occlusions using the ABO Discrepancy Index and posttreatment outcomes with the ABO Objective Grading System scores.
One of the standout findings was the significant difference in treatment duration. Traditional braces proved to be faster, wrapping up treatment about 0.4 years earlier than the Invisalign group. However, it’s essential to note that while the time difference is statistically significant, it may not be a deal-breaker for many patients who prioritize aesthetics and comfort.
Posttreatment Outcomes: A Closer Look
Posttreatment results were intriguing. Both groups showed changes in alignment and buccolingual inclinations, but the overall outcomes were similar. Specifically, the Invisalign group experienced a worsening in alignment and overjet posttreatment, while the traditional braces group saw improvements in these areas.
While Invisalign treatments might take a tad longer, the results align closely with those of traditional braces. This study reaffirms that the choice between Invisalign and traditional braces should be based on individual preferences, clinical needs, and the specific malocclusion being treated.
What’s your take on these findings? How do you think they’ll shape the future of orthodontics? Share your insights below!