®A specific study, a useful way to read its records
This explanation uses D’Antò and colleagues’ 2024 observational study of 45 adults and 390 selected teeth treated with Ordoline aligners. It concerns a study-defined crown measure and the end of the first aligner set. The teeth are not 390 independent patients. These findings do not establish Invisalign® performance, results for children or teens, or your own outcome.
Which part of the turn is being compared?
The researchers chose features on each tooth’s crown and used a direction line between crown features to represent its orientation on a bite-plane reference. The angular change of that line was their rotational component.
Keeping those crown features and the reference consistent gives the two comparisons a shared meaning: they concern the same measured component. A different view of the tooth, a general crowding label or a different reference would not by itself supply that comparison.
This is how the study represented crown orientation. It is not a measurement of root position, a universal definition of a tooth’s long axis, or a complete three-dimensional clinical result. It is not a method to measure your own teeth.
Three records, with one common starting point
The records have different jobs. Both changed records are compared with the same starting reference.
Starting record
The pretreatment digital model supplies the reference orientation of the crown. It is the common starting point for both comparisons.
Intended record
The final virtual setup supplies the intended orientation. Comparing this setup with the starting model gives the study’s prescribed rotational change. It is a goal record, not an observed result.
Observed record
The actual scan at the end of the first aligner set supplies the observed orientation. Comparing that scan with the same starting model gives the achieved rotational change at that stage. First-set completion is not necessarily the end of clinical treatment.
Read the plan and the first-series record together
Read the study’s supplied records together. The starting model establishes the crown reference. The virtual setup shows what orientation was intended relative to that start. The first-series scan shows what orientation was observed relative to that same start.
Because the crown features and reference are kept consistent, the intended and observed changes refer to the same angular component. That shared reference makes their comparison meaningful; it does not make the two records interchangeable.
Together, the records describe the planned turn and provide evidence of the observed turn at the end of the first set, using one starting reference. The preview expresses intent; the actual first-series record supplies the observed evidence. A doctor interprets that component comparison alongside the wider clinical findings. The labels alone do not establish cause, fault, suitability or a need for more treatment.
If the explanation uses T0, T1 and T2
The paper calls the starting pretreatment model T0, the final virtual setup T1, and the actual end-of-first-set scan T2. Its prescribed change compares T0 with T1. Its achieved change compares T0 with T2. T1 is a virtual destination, not an intermediate visit; T2 identifies the study’s first-series stage, not necessarily a finished treatment result.
What the study adds, and where its answer stops
The authors reported planned-versus-achieved differences at tooth-category level, with lower central incisors as their stated exception. That does not establish that every participant under-rotated. Nor does an exception to statistical significance mean perfectly predicted rotation. No category finding predicts what happened to your tooth.
This was a selected adult Ordoline model comparison, not a randomized comparison with braces or a test of every aligner system. The study does not establish that a particular appliance, attachment, wear pattern or further phase is right for you. SMILE-FX® is not presented here as offering Ordoline or using the study’s software, records or protocol.
Put the understood goal into a responsible conversation
You can now distinguish the rotational goal from evidence of the observed crown component. In an individual conversation, the responsible doctor connects actual findings, the proposed goal and continuing review. An illustrative preview can help discuss intent; it is not an achieved rotation record.
SMILE-FX® provides full-service digital orthodontics with a clear-aligner focus and continuing board-certified orthodontist responsibility, including follow-ups. Its smartphone monitoring supports communication and clinical progress review; it does not perform the crown-angle assessment described in this paper. Read the qualified care arrangements.
You do not need to dislike your appearance or decide to start treatment to understand a supplied goal. Young people can bring their own priorities and a chosen parent or supporter; the adult study does not establish youth results.
Already in treatment?
Use your responsible treating team’s supplied contact route and individual instructions for questions about your own records or plan. This guide cannot interpret a personal scan, select a treatment change or replace that relationship.
Want an individual explanation of a new orthodontic question?
An optional free in-person conversation at SMILE-FX® in Miramar can start with what your findings mean and what goal is being proposed. A consultation request is not a confirmed appointment, clinical assessment or case acceptance. Records, scans, procedures, referrals, treatment scope and fees require individual confirmation; no rotation result is promised.
One Miramar studio · A request is not an appointment or case acceptance. Location and visit details.
Consultation page: smile-fx.com/lp/free-consult/
Source, changes and limits
Vincenzo D’Antò, Roberto Rongo, Sossio Dario Casaburo, Stefano Martina, Paolo Petrucci, Kreshnik Keraj and Rosa Valletta. Predictability of tooth rotations in patients treated with clear aligners. Scientific Reports 14, article 11348, 18 May 2024. DOI: 10.1038/s41598-024-61594-2.
© The Author(s) 2024. Original work under Creative Commons Attribution 4.0 International (CC BY 4.0). Selected narrative has been simplified and reorganized; the record comparison and completed plain-language interpretation are this guide’s explanatory synthesis. No research figures, tables, case images, formulas or underlying-study expression are reproduced.
This is a dated observational comparison of 45 adults and 390 selected teeth treated with Ordoline, using a study-defined crown measure at first-series completion. It does not establish youth, other-system or personal results. Research authors are not this guide’s authors or clinical reviewers and do not endorse SMILE-FX®.