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The objective is to compare the dento-alveolar therapeutic effects of wearing class II inter-arch traction elastics on aligners versus multi-brackets in an adult population. The principal hypothesis is no significant difference in therapeutic effects of using inter-arch elastics on aligners versus multi-brackets.
It is a non-interventional research involving the human person, research on existing data and / samples in the field of dentofacial orthopedics. This study analyzes the effects of rubber bands when combined with aligners in adult patients. This is a comparative retrospective study of radiographs and casts before and after orthodontic treatment. The patients studied are in Angle class II and adults. Two groups are analysed: patients treated with fixed (vestibular multi-attachment) and removable (Invisalign-type aligners) appliances.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Clear aligner | Patient with class II malocclusion, treated with class II elastics on aligners |
| |
| Fixed appliance | Patient with class II malocclusion, treated with class II elastics on fixed appliance |
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Aligner and inter-arch elastics | Combination Product | Correction of class II malocclusion by class II elastics on clear aligners |
|
| Measure | Description | Time Frame |
|---|---|---|
| Change in IMPA Mandibular incisor angle (degrees) | Angle between the mandibular plane and the lower incisor axis: position of the lower incisor in relation to the mandible | First : just before the beginning of treatment; Second : just after the end of orthodontic treatment. An average of 18 months. |
| Measure | Description | Time Frame |
|---|---|---|
| Sex | Sex | 1 month |
| Duration of treatment | Treatment time duration in month | 24 months |
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Inclusion Criteria:
Exclusion Criteria:
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Adult with class II malocclusion treated with class II elastics
| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Bart VANDE VANNET, Phd | Contact | +32496284339 | bart.vande-vannet@univ-lorraine.fr | |
| Lou DEON | Contact | +33685327891 | loudeon@yahoo.fr |
| Name | Affiliation | Role |
|---|---|---|
| Bart VANDE VANNET | Central Hospital, Nancy, France | Study Director |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| DEON | Nancy | Lorraine | 54000 | France |
|
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 23452973 | Background | Janson G, Sathler R, Fernandes TM, Branco NC, Freitas MR. Correction of Class II malocclusion with Class II elastics: a systematic review. Am J Orthod Dentofacial Orthop. 2013 Mar;143(3):383-92. doi: 10.1016/j.ajodo.2012.10.015. | |
| 31651082 | Background | Robertson L, Kaur H, Fagundes NCF, Romanyk D, Major P, Flores Mir C. Effectiveness of clear aligner therapy for orthodontic treatment: A systematic review. Orthod Craniofac Res. 2020 May;23(2):133-142. doi: 10.1111/ocr.12353. Epub 2019 Nov 13. |
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| ID | Term |
|---|---|
| D008312 | Malocclusion, Angle Class II |
| D057887 | Overbite |
| ID | Term |
|---|---|
| D008310 | Malocclusion |
| D014076 | Tooth Diseases |
| D009057 | Stomatognathic Diseases |
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| Change in interproximal dental size | Interproximal size in mm | First : just before the beginning of treatment; Second : just after the end of orthodontic treatment. An average of 18 months |
| Change in skeletal sagittal pattern ANB angle | Cephalometric measurements : angle between A, Na (nasion) and B in degrees | First : just before the beginning of treatment; Second : just after the end of orthodontic treatment. An average of 18 months |
| Change in skeletal sagittal pattern Ao-Bo | Cephalometric measurements : mesure in mm between Ao and Bo | First : just before the beginning of treatment; Second : just after the end of orthodontic treatment. An average of 18 months |
| Change in skeletal vertical pattern : FMA | Cephalometric measurements : angle in degrees between franckfort plan and mandibular plan. | First : just before the beginning of treatment; Second : just after the end of orthodontic treatment. An average of 18 months |
| Change in skeletal vertical pattern : Sn Gogn | Cephalometric measurements : angle in degrees between SN and GoGn | First : just before the beginning of treatment; Second : just after the end of orthodontic treatment. An average of 18 months |
| Change in faciale anterior height | Cephalometric measurements of faciale anterior height | First : just before the beginning of treatment; Second : just after the end of orthodontic treatment. An average of 18 months |
| Change in faciale posterior height | Cephalometric measurements of faciale posterior height | First : just before the beginning of treatment; Second : just after the end of orthodontic treatment. An average of 18 months |
| Change in index Faciale height | Cephalometric measurements, index HFP (faciale posterior heigth)/ HFA (faciale anterior height) | First : just before the beginning of treatment; Second : just after the end of orthodontic treatment. An average of 18 months |
| Change in nterincisal angle | Cephalometric measurements : measurement between manxillary and mandibular incisors. | First : just before the beginning of treatment; Second : just after the end of orthodontic treatment. An average of 18 months |
| Change in plan of occlusion | Cephalometric measurements : angle between SN and Op | First : just before the beginning of treatment; Second : just after the end of orthodontic treatment. An average of 18 months |
| Age at the beginning of treatment | Age | 1 month |
| Age at the end of treatment | Age | 24 months |
| Change in von Spee curve | Measurements on impressions : it is the average of the distance between the highest point of the deepest cusp and the occlusal plane. | First : just before the beginning of treatment; Second : just after the end of orthodontic treatment. An average of 18 months |
| Change in overall crowding | Measurements on impressions : comparison of the sum of the mesiodistal diameters of 35 to 45 and the arch perimeter from the mesial face of 36 to the mesial face of 46. | First : just before the beginning of treatment; Second : just after the end of orthodontic treatment. An average of 18 months |
| Change in overjet | Measurements on impressions : in mm | First : just before the beginning of treatment; Second : just after the end of orthodontic treatment. An average of 18 months |
| Change in overbite | Measurements on impressions : in mm | First : just before the beginning of treatment; Second : just after the end of orthodontic treatment. An average of 18 months |
| Change in arch length | Measurements on impressions : distance between inter incisal point and mesiale face of 6. | First : just before the beginning of treatment; Second : just after the end of orthodontic treatment. An average of 18 months |
| CHange in class II quantity | Measurements on impressions : inter canine and inter molar relations | First : just before the beginning of treatment; Second : just after the end of orthodontic treatment. An average of 18 months |
| Change in space required | Measurements on impressions : sum of all mesiodistal diameter. | First : just before the beginning of treatment; Second : just after the end of orthodontic treatment. An average of 18 months |
| Change in inter canine distance | Measurements on impressions : distance between the canine in mm | First : just before the beginning of treatment; Second : just after the end of orthodontic treatment. An average of 18 months |
| Change in inter premolar distance | Measurements on impressions : distance between the premolars | First : just before the beginning of treatment; Second : just after the end of orthodontic treatment. An average of 18 months |
| Change in inter molar distance | Measurements on impressions : distance between the molars | First : just before the beginning of treatment; Second : just after the end of orthodontic treatment. An average of 18 months |
| 28547915 | Background | Zheng M, Liu R, Ni Z, Yu Z. Efficiency, effectiveness and treatment stability of clear aligners: A systematic review and meta-analysis. Orthod Craniofac Res. 2017 Aug;20(3):127-133. doi: 10.1111/ocr.12177. Epub 2017 May 26. |
| 30171391 | Background | Lombardo L, Colonna A, Carlucci A, Oliverio T, Siciliani G. Class II subdivision correction with clear aligners using intermaxilary elastics. Prog Orthod. 2018 Sep 1;19(1):32. doi: 10.1186/s40510-018-0221-5. |
| 34013659 | Background | Dianiskova S, Rongo R, Buono R, Franchi L, Michelotti A, D'Anto V. Treatment of mild Class II malocclusion in growing patients with clear aligners versus fixed multibracket therapy: A retrospective study. Orthod Craniofac Res. 2022 Feb;25(1):96-102. doi: 10.1111/ocr.12500. Epub 2021 May 31. |
| 26636248 | Background | Duncan LO, Piedade L, Lekic M, Cunha RS, Wiltshire WA. Changes in mandibular incisor position and arch form resulting from Invisalign correction of the crowded dentition treated nonextraction. Angle Orthod. 2016 Jul;86(4):577-83. doi: 10.2319/042415-280.1. Epub 2015 Dec 4. |
| 35015923 | Background | Amm E, El Amm C, Vaden J. Effect of Class II elastics on different mandibular arch preparation stabilized with aligners and stainless-steel wires: A FEM study. Orthod Craniofac Res. 2022 Nov;25(4):520-529. doi: 10.1111/ocr.12564. Epub 2022 Jan 27. |
| 36555949 | Background | Rongo R, Dianiskova S, Spiezia A, Bucci R, Michelotti A, D'Anto V. Class II Malocclusion in Adult Patients: What Are the Effects of the Intermaxillary Elastics with Clear Aligners? A Retrospective Single Center One-Group Longitudinal Study. J Clin Med. 2022 Dec 9;11(24):7333. doi: 10.3390/jcm11247333. |
| 32291482 | Background | Deregibus A, Tallone L, Rossini G, Parrini S, Piancino M, Castroflorio T. Morphometric analysis of dental arch form changes in class II patients treated with clear aligners. J Orofac Orthop. 2020 Jul;81(4):229-238. doi: 10.1007/s00056-020-00224-8. Epub 2020 Apr 14. |
| 36456944 | Background | Liu X, Cheng Y, Qin W, Fang S, Wang W, Ma Y, Jin Z. Effects of upper-molar distalization using clear aligners in combination with Class II elastics: a three-dimensional finite element analysis. BMC Oral Health. 2022 Dec 1;22(1):546. doi: 10.1186/s12903-022-02526-2. |
| 12169031 | Background | Baccetti T, Franchi L, McNamara JA Jr. An improved version of the cervical vertebral maturation (CVM) method for the assessment of mandibular growth. Angle Orthod. 2002 Aug;72(4):316-23. doi: 10.1043/0003-3219(2002)0722.0.CO;2. |
| 18774080 | Background | Marshall SD, Caspersen M, Hardinger RR, Franciscus RG, Aquilino SA, Southard TE. Development of the curve of Spee. Am J Orthod Dentofacial Orthop. 2008 Sep;134(3):344-52. doi: 10.1016/j.ajodo.2006.10.037. |
| 34479824 | Background | Fawaz P, Amm E, Khoury E. The curve of Spee and its levelling in different vertical skeletal patterns: A 3D set-up study. Int Orthod. 2021 Dec;19(4):659-668. doi: 10.1016/j.ortho.2021.08.003. Epub 2021 Aug 31. |
| 35361187 | Background | Adel SM, Vaid NR, El-Harouni N, Kassem H, Zaher AR. Digital model superimpositions: are different software algorithms equally accurate in quantifying linear tooth movements? BMC Oral Health. 2022 Mar 31;22(1):103. doi: 10.1186/s12903-022-02129-x. |