@article{Bandao2024,

title = {Evaluation of force systems generated by Memory Titanol springs with different preactivation bends},

author = {Henrique Barcelos Bandao and Jonas Bianchi and Lucas Arrais de Campos and Alyssa Schiavon Gandini and Luiz Gonzaga Gandini Junior},

url = {https://doi.org/10.1590/2177-6709.29.5.e242430.oar},

doi = {10.1590/2177-6709.29.5.e242430.oar },

year  = {2024},

date = {2024-10-04},

urldate = {2024-10-04},

journal = {Dental Press Journal of Orthodontics},

volume = {29},

number = {5},

abstract = {Objective: This study evaluated the force system generated by the Memory Titanol® spring (MTS) with different preactivation bends using an orthodontic force tester (OFT). Methods: Three preactivations were tested using a 0.017 × 0.022-in stainless steel (SS) wire and a 0.018 × 0.025-in NiTi segment, with an activation of 30º in the posterior segment (β), with 0º (Group 1 [G1]), 45º (Group 2 [G2]), and 60º (Group 3 [G3]) in the anterior segment (α). Results:   The molars showed extrusion values of −1.33 N for G1 and −0.78 N for G2, and an intrusion value of 0.33 N for G3. The force in the premolars was intrusive with a variation of 1.34 N for G1 and 0.77 N for G2; and extrusive with a variation of −0.31 N for G3. Regarding the upright moment (Ty) of the molar, a distal moment was observed with values of 53.45 N.mm for G1 and 19.87 N.mm for G2, while G3 presented a mesial moment of −6.23 N.mm. G1, G2, and G3 all exhibited distal premolar moments (Ty) of 3.58, 2.45, and 0.68 N.mm, respectively. Conclusions: The tested preactivations exerted an extrusive force in G1 and G2 and an intrusive force in G3 during molar vertical movement. The premolar region in G1 and G2 showed intrusive force and distal moment.},

keywords = {Biomechanical phenomena, Corrective, orthodontics, tooth movement technique},

pubstate = {published},

tppubtype = {article}

}

@article{Oh2022h,

title = {The Significance of Utilizing a Corticotomy on Periodontal and Orthodontic Outcomes: A Systematic Review and Meta-Analysis},

author = {Gao J and Nguyen T and Oberoi S and Oh H and Kapila S Kao RT and Lin GH},

url = {https://pubmed.ncbi.nlm.nih.gov/34440034/},

doi = {10.3390/biology10080803},

year  = {2021},

date = {2021-08-19},

urldate = {2022-08-19},

journal = {Biology (Basel)},

volume = {10},

issue = {8},

pages = {803},

abstract = {Purpose: This systematic review compares the clinical and radiographic outcomes for patients who received only a corticotomy or periodontal accelerated osteogenic orthodontics (PAOO) with those who received a conventional orthodontic treatment.



Methods: An electronic search of four databases and a hand search of peer-reviewed journals for relevant articles published in English between January 1980 and June 2021 were performed. Human clinical trials of ≥10 patients treated with a corticotomy or PAOO with radiographic and/or clinical outcomes were included. Meta-analyses were performed to analyze the weighted mean difference (WMD) and confidence interval (CI) for the recorded variables.



Results: Twelve articles were included in the quantitative analysis. The meta-analysis revealed a localized corticotomy distal to the canine can significantly increase canine distalization (WMD = 1.15 mm, 95% CI = 0.18-2.12 mm, p = 0.02) compared to a conventional orthodontic treatment. In addition, PAOO also showed a significant gain of buccal bone thickness (WMD = 0.43 mm, 95% CI = 0.09-0.78 mm, p = 0.01) and an improvement of bone density (WMD = 32.86, 95% CI = 11.83-53.89, p = 0.002) compared to the corticotomy group.



Conclusion: Based on the findings of the meta-analyses, the localized use of a corticotomy can significantly increase the amount of canine distalization during orthodontic treatment. Additionally, the use of a corticotomy as a part of a PAOO procedure significantly increases the rate of orthodontic tooth movement and it is accompanied by an increased buccal bone thickness and bone density compared to patients undergoing a conventional orthodontic treatment.},

keywords = {acceleration, bone remodeling, orthodontics, peridontics, tooth movement technique},

pubstate = {published},

tppubtype = {article}

}