An interventional study of Arm 1: Beveled Attachments and Conventional Rectangular Attachments in Malocclusion and Tooth Movement Techniques, sponsored by Neodent. Enrolling by invitation at 1 site in Brazil. Open to participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2025-03-17.
Sponsored by Neodent (part of Institut Straumann AG) · Not applicable, Interventional, and Treatment
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Among 16 studies in Malocclusion with a site in Brazil — 1 open to participants now, 3 under way, none of them phase 3. Malocclusion · Brazil.
Among the 16 studies in Malocclusion with a site in Brazil, this one is the 3rd largest by planned enrollment of the 14 interventional ones that give a count, is one of 2 that started in 2024, is one of 12 with no phase, and was the 15th registered.
323 studies on the registry are indexed under Malocclusion; 84 are open to participants now.
Browse Malocclusion studies →1 of the 16 studies in Malocclusion with a site in Brazil is open now.
A study can be open while its sites in Brazil have not opened yet or have stopped. Only those recruiting at a site in Brazil →
Of the 41 Malocclusion studies recruiting now, 8 (20%) set no upper age limit and 33 (80%) stop at 75 or younger; 32 take children under 18; 18 take healthy volunteers.
This study: 18 Years and older · all sexes · healthy volunteers too.
The full table on the hub →This tab as a report to print or save as PDF → With an account.
16 studies; the count open now beside each. This study's row is marked.
First in 2008; this study’s year is marked. 2 started in 2024.
This study's planned enrollment of 51 is above the median of 37 across 242 interventional studies indexed under Malocclusion.
Median enrollment 36 across the 14 interventional studies, 32 across the 2 observational. Of the 13 that completed or were terminated, 2 (15%) have results posted.
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2 of 16 have an industry lead sponsor. The 10 most frequent:
This study is registered under Neodent, one of the names counted as Institut Straumann AG. Under that name alone:
Neodent is the lead sponsor of 10 studies on the registry; 4 are open to participants now.
Institut Straumann AG has 2 studies filed under Malocclusion — fewer than ten, so there is no comparison to draw.
2 of the studies in Malocclusion with a site in Brazil that are under way reach primary completion within a year, 0 of them phase 3. Phase 3 first, then by date:
| Study | Primary completion |
|---|---|
| NCT06882395NeodentImpact of Aligner Replacement Protocols on Predictability of Planned Dental Movements: Evaluation of Double Aligner | 2027-02 |
| NCT06873932NeodentEfficacy of Orthodontic Tooth Movement Using Beveled and Conventional Attachments in Aligners | 2027-02 |
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Among the 16 studies in Malocclusion with a site in Brazil, from their registry updates:
Nothing recorded among them since 2026-09-25.
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The objective of this study is to evaluate the efficacy of tooth movement using beveled attachments and conventional attachments. The sample will be consecutively selected, comprising participants seeking orthodontic treatment in a private dental office within the recruitment period (from ethics committee approval to July 2027). Participants will be selected and randomized using a split-mouth study design. Groups will be divided into rectangular and beveled attachments, each further subdivided into subgroups for horizontal movements (Group H), vertical movements (Group V), and rotations (Group R), with 20 teeth/attachments per group, totaling a sample of 120 teeth/attachments. Digital study models will be obtained before the start of treatment and immediately after its completion. Additionally, clinical intraoral and extraoral photographs will be taken (pre- and post-treatment). Measurements will be collected from the initial and final digital models to determine the magnitude and direction of movements resulting from treatment. Descriptive statistics will be calculated for each type of dental movement evaluated. Paired tests will be conducted due to the split-mouth design. Correlation tests will be applied if necessary.
Participant recruitment will take place after approval by the Research Ethics Committee until July 2027. The consultations will occur in a private clinic in Curitiba - PR, Brazil.
Participants will be selected and randomized according to the split-mouth study design. Teeth on each side will have different attachment configurations to aid orthodontic aligner movements. One side will use rectangular attachments, and the other side will use beveled attachments. Groups will be divided as follows:
Group H: 20 teeth/attachments with horizontal displacements (parallel to the occlusal plane) including tipping or mesio-distal translation - premolars and molars.
Group V: 20 teeth/attachments with vertical displacements (extrusion and intrusion) - incisors.
Group R: 20 teeth/attachments with mesio-distal rotations - canines and premolars.
Digital study models (intraoral scanner) will be obtained before and after treatment. These intraoral scans will be analyzed alongside the planned movement models generated by the orthodontic treatment planning software.
Treatment efficacy will be analyzed using tooth-tracking methodology in Geomagic Control X, measuring the differences between planned and achieved movements and calculating the percentage of achieved orthodontic tooth movement.
Additionally, pre- and post-treatment clinical photographs will be taken:
Intraoral:
Frontal in occlusion; Right and left lateral views in occlusion; Occlusal views of upper and lower arches.
Extraoral:
Frontal with lips at rest; Frontal with a wide smile; Profile with lips at rest. All participants will receive orthodontic aligner treatment supervised by a qualified professional capable of providing relevant care under clinical trial conditions. Diagnosis, movement planning, and therapy monitoring procedures (e.g., aligner replacement frequency) for each individual will be established by the researcher, respecting the manufacturer's specified instructions.
The sample size was 30 participants will be recruited, totaling a sample of 120 teeth/attachments.
Participant satisfaction will be recorded pre-treatment, during follow-up, and post-treatment. In this study, oral health-related quality of life will be assessed through the OHIP-14 (Oral Health Impact Profile-14) questionnaire as a measure of participant satisfaction with the treatment.
Initial and final digital models will be imported using software, where measurements will be taken to identify the magnitude and direction of movements resulting from treatment with different attachment types:
Horizontal displacements (parallel to the occlusal plane) including tipping or mesio-distal translation - premolars and molars.
Vertical displacements (extrusion and intrusion) - incisors. Mesio-distal rotations - canines and premolars.
Descriptive statistics will be calculated for each type of tooth movement evaluated and described by mean, standard deviation, median, quartiles, minimum, and maximum. Paired tests will be conducted due to the split-mouth design. Correlation tests will also be applied if necessary.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Contraindication
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
The patients will receive beveled attachments on one side of the jaws
Device: Arm 1: Beveled Attachments
The patients will receive rectangular attachments on one side of the jaws
Device: Conventional Rectangular Attachments
Beveled attachments applied to 20 teeth in each subgroup (horizontal, vertical, and rotational movements).
Conventional rectangular attachments applied to 20 teeth in each subgroup (horizontal, vertical, and rotational movements).
To evaluate the efficacy of dental movement using beveled and conventional attachments
Difference between the planned movement and the achieved movement, and the percentage of orthodontic dental movement achieved.
Time frame: From enrollment to the end of treatment, not exceeding 24 months.
To measure dental movements achieved with the treatment.
To measure the horizontal, vertical, and rotational dental movements achieved with the treatment
Time frame: From enrollment to the end of treatment, not exceeding 24 months.
Measure the transverse dental changes achieved.
Transverse dental changes will be analyzed by comparing pre-treatment and post-treatment digital dental scans.
Time frame: From enrollment to the end of treatment, not exceeding 24 months.
To assess participant satisfaction throughout the treatment.
Participant satisfaction will be recorded pre-treatment, during follow-up, and post-treatment. In this study, oral health-related quality of life will be assessed through the OHIP-14 (Oral Health Impact Profile-14) questionnaire as a measure of participant satisfaction with the treatment.
Time frame: From enrollment to the end of treatment, not exceeding 24 months.
Plan to share: No
No publications or documents are linked to this record.
Started Oct 2024 (actual). Primary completion is estimated for Feb 2027, 28 months after the start.
Of 163 interventional studies with no phase under Malocclusion, half reached primary completion within 19 months of starting (the median), counting those still running; a quarter within 10 and three quarters within 32. This study's planned 28 months is above that.
How these figures are worked out, and which studies are left out of them.
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