Research Articles | Challenge Journal of Structural Mechanics

Effect of different trimline extension of clear aligners in combination with Class II elastics on the mandibular dentition: a finite element analysis

Nurver Karslı, Bahanur Hilal Kisbet


DOI: https://doi.org/10.20528/cjsmec.2024.02.003
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Abstract


Objective of this study is to evaluate the effect of different trimline extension of aligners and the effect of elastics applied through the slit cutouts and buttons on the mandibular dentition using Class II intermaxillary elastics combined with clear aligner treatment. Three-dimensional (3D) finite element models that simulate the effects of Class II elastics on the mandibular arch in four different scenarios were studied, named, straight and high trimline aligner (HTLA) model with elastic applied through buttons (Model 1), straight and low trimline aligner (LTLA) model with elastic applied through buttons (Model 2), HTLA model with elastic applied through slit cutout (Model 3), LTLA model with elastic applied through slit cutout (Model 4). 3D displacements of the teeth, von Mises stress (VMS) in the periodontal ligament (PDL) were calculated. In all models, the crown of the mandibular anterior teeth moved labially, the root moved lingually, and the mandibular first molars moved mesially. Among all models, labialization of incisors and mesialization of molars was highest in Model 2 and lowest in Model 3. In clear aligner treatment combined with Class II elastics, HTLA was more effective in controlling mandibular incisor proclination and mesial tipping of mandibular molars. The slit cutout models were more effective in controlling mesial tipping of mandibular molars.


Keywords


clear aligner; Class II elastics; incisor; dentition; finite element analysis

References


Ammar HH, Ngan P, Crout RJ, Mucino VH, Mukdadi OM (2011). Three-dimensional modeling and finite element analysis in treatment planning for orthodontic tooth movement. American Journal of Orthodontics and Dentofacial Orthopedics, 139(1), e59–71.

Aslan BI, Kucukkaraca E, Turkoz C, Dincer M (2014). Treatment effects of the Forsus Fatigue Resistant Device used with miniscrew anchorage. The Angle Orthodontist, 84(1), 76-87.

Brown BE (2021). Effect of Gingival Margin Design on Clear Aligner Material Strain and Force Delivery. Thesis. University of Minnesota.

Caruso S, Nota A, Ehsani S, Maddalone E, Ojima K, Tecco S (2019). Impact of molar teeth distalization with clear aligners on occlusal vertical dimension: a retrospective study. BMC Oral Health, 19(1), 182.

Celikoglu M, Buyuk SK, Ekizer A, Unal T (2016). Treatment effects of skeletally anchored Forsus FRD EZ and Herbst appliances: A retrospective clinical study. The Angle Orthodontist, 86(2), 306-314.

Chen X, Mao B, Zhu Z, Yu J, Lu Y, Zhang Q, Yue L, Yu H (2019). A three-dimensional finite element analysis of mechanical function for 4 removable partial denture designs with 3 framework materials: CoCr, Ti-6Al-4V alloy and PEEK. Scientific Reports, 9(1), 13975.

Cowley DP (2012). Effect of Gingival Margin Design on Retention of Thermoformed Orthodontic Aligners. Thesis. University of Nevada.

de Oliveira JC, Sordi MB, da Cruz ACC, Zanetti RV, Betiol EAG, Vieira SR, Zanetti AL (2020). Number of dental abutments influencing the biomechanical behavior of tooth‒implant-supported fixed partial dentures: A finite element analysis. Journal of Dental Research, Dental Clinics, Dental Prospects, 14(4), 228-234.

Dorow C, Sander FG (2005). Development of a model for the simulation of orthodontic load on lower first premolars using the finite element method. Journal of Orofacial Orthopedics / Fortschritte der Kieferorthopädie, 66(3), 208-218.

Elkholy F, Mikhaiel B, Repky S, Schmidt F, Lapatki BG (2019). Effect of different attachment geometries on the mechanical load exerted by PET G aligners during derotation of mandibular canines. Journal of Orofacial Orthopedics / Fortschritte der Kieferorthopädie, 80(6), 315-326.

Elshazly T, Salvatori D, Bourauel C, Elattar H, Alkabani Y. (2022). Effect of thickness and material type of orthodontic aligners on force transmission: An in vitro study using pressure-sensitive films. SSRN, 4270102.

Elshazly TM, Keilig L, Salvatori D, Chavanne P, Aldesoki M, Bourauel C (2022). Effect of trimming line design and edge extension of orthodontic aligners on force transmission: An in vitro study. Journal of Dentistry, 125, 104276.

Evangelista K, Vasconcelos K de F, Bumann A, Hirsch E, Nitka M, Silva MAG (2010). Dehiscence and fenestration in patients with Class I and Class II Division 1 malocclusion assessed with cone-beam computed tomography. American Journal of Orthodontics and Dentofacial Orthopedics, 138(2), 133.e1-133.e7.

Gao L, Wichelhaus A (2017). Forces and moments delivered by the PET-G aligner to a maxillary central incisor for palatal tipping and intrusion. The Angle Orthodontist, 87(4), 534-541.

Hohmann A, Kober C, Young P, Dorow C, Geiger M, Boryor A, Sander FM, Sander C, Sander FG (2011). Influence of different modeling strategies for the periodontal ligament on finite element simulation results. American Journal of Orthodontics and Dentofacial Orthopedics, 139(6), 775-783.

Hohmann A, Wolfram U, Geiger M, Boryor A, Sander C, Faltin R, Faltin K, Sander FG (2007). Periodontal ligament hydrostatic pressure with areas of root resorption after application of a continuous torque moment. The Angle Orthodontist, 77(4), 653-659.

Janson G, Sathler R, Fernandes TMF, Branco NCC, de Freitas MR (2013). Correction of Class II malocclusion with Class II elastics: A systematic review. American Journal of Orthodontics and Dentofacial Orthopedics, 143(3), 383-392.

Jones G, Buschang PH, Kim KB, Oliver DR (2008). Class II non-extraction patients treated with the forsus fatigue resistant device versus intermaxillary elastics. The Angle Orthodontist, 78(2), 332-338.

Knop L, Gandini LG Jr, Shintcovsk RL, Gandini MR (2015). Scientific use of the finite element method in Orthodontics. Dental Press Journal of Orthodontics, 20(2), 119-125.

Kucukkurt S (2019). Finite element stress analysis method and researches on dental implantology. Journal of Dental Faculty of Atatürk University, 29(4), 701-710.

Li LL, Wang ZY, Bai ZC, Mao Y, Gao B, Xin HT, Zhou B, Zhang Y, Liu B (2006). Three-dimensional finite element analysis of weakened roots restored with different cements in combination with titanium alloy posts. Chin Med J, 119(4), 305-311.

Liu DS, Chen YT (2015). Effect of thermoplastic appliance thickness on initial stress distribution in periodontal ligament. Advances in Mechanical Engineering, 7(4), 168781401557836.

Liu L, Song Q, Zhou J, Kuang Q, Yan X, Zhang X, Shan Y, Li X, Long H, Lai W (2022). The effects of aligner overtreatment on torque control and intrusion of incisors for anterior retraction with clear aligners: A finite-element study. American Journal of Orthodontics and Dentofacial Orthopedics, 162(1), 33-41.

Liu X, Cheng Y, Qin W, Fang S, Wang W, Ma Y, Jin Z (2022). Effects of upper-molar distalization using clear aligners in combination with Class II elastics: a three-dimensional finite element analysis. BMC Oral Health, 22(1), 546.

Liu X, Wang W, Gao J, Qin W, Wen Y, Luo H, Ma Y, Jin Z (2023). Actual contribution ratio of maxillary and mandibular molars for total molar relationship correction during maxillary molar sequential distalization using clear aligners with Class II elastics: A finite element analysis. American Journal of Orthodontics and Dentofacial Orthopedics, 164(4), e106-e120.

Luzi C, Luzi V (2013). Traitement de la classe II squelettique au moyen d’un appareil de Herbst à ancrage osseux. L’Orthodontie Française, 84(4), 307-318.

Nelson B, Hägg U, Hansen K, Bendeus M (2007). A long-term follow-up study of Class II malocclusion correction after treatment with Class II elastics or fixed functional appliances. American Journal of Orthodontics and Dentofacial Orthopedics, 132(4), 499-503.

Nucera R, Dolci C, Bellocchio AM, Costa S, Barbera S, Rustico L, Farronato M, Militi A (2022), Portelli M. Effects of composite attachments on orthodontic clear aligners therapy: A systematic review. Materials, 15(2), 533.

Patterson BD, Foley PF, Ueno H, Mason SA, Schneider PP, Kim KB (2021). Class II malocclusion correction with Invisalign: Is it possible? American Journal of Orthodontics and Dentofacial Orthopedics, 159(1), e41-e48.

Rossini G, Parrini S, Castroflorio T, Deregibus A, Debernardi CL (2015). Efficacy of clear aligners in controlling orthodontic tooth movement: A systematic review. The Angle Orthodontist, 85(5), 881-889.

Rossini G, Schiaffino M, Parrini S, Sedran A, Deregibus A, Castroflorio T (2020). Upper second molar distalization with clear aligners: A finite element study. Applied Sciences, 10(21), 7739.

Staderini E, Ventura V, Meuli S, Maltagliati L, Gallenzi P (2022). Analysis of the changes in occlusal plane inclination in a Class II deep bite “teen” patient treated with clear aligners: A case report. International Journal of Environmental Research and Public Health, 19(2), 651.

Tanne K, Sakuda M, Burstone CJ (1987). Three-dimensional finite element analysis for stress in the periodontal tissue by orthodontic forces. American Journal of Orthodontics and Dentofacial Orthopedics, 92(6), 499-505.

Turkkahraman H, Eliacik SK, Findik Y (2016). Effects of miniplate anchored and conventional Forsus Fatigue Resistant Devices in the treatment of Class II malocclusion. The Angle Orthodontist, 86(6), 1026-1032.

Unal T, Celikoglu M, Candirli C (2015). Evaluation of the effects of skeletal anchoraged Forsus FRD using miniplates inserted on mandibular symphysis: A new approach for the treatment of Class II malocclusion. The Angle Orthodontist, 85(3), 413-419.

Wang Q, Dai D, Wang J, Chen Y, Zhang C (2022). Biomechanical analysis of effective mandibular en-masse retraction using Class II elastics with a clear aligner: a finite element study. Progress in Orthodontics, 23(1), 23.


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