Comparison of two different initial archwires for tooth alignment during fixed orthodontic treatment—A randomized clinical trial

Aboalnaga

et al. 2022

ijhs

Objectives: To evaluate the effect of intraoral use of three brands of nickel titanium archwires on their mechanical properties and crowding relief ability. Methods: Three groups (n=39) of 0.016” round NiTi archwires: Dentaurum (A), American Orthodontics (B) and IMD Orthodontics (C) were subdivided according to the intervention (n=13) into: As-received, no intervention (subgroup 1), in-vivo (subgroup 2), and in-vitro (subgroup 3). Plateau slope, resilience, and elastic modulus of all wires were tested using a universal testing machine. The relief of crowding following intraoral use for 8 weeks was assessed using Little’s irregularity index. Results were significant at p ≤ 0.05. Results: For all NiTi brands, the highest plateau slope value; among the subgroups, was recorded following the intraoral use (in-vivo). For the in-vivo wires (subgroup 2), the Dentaurum wires revealed the lowest plateau slope value (0.258 N/mm ±0.032) while the IMD wires revealed the lowest resilience values (36.24 J.mm-3 ±0.6). There was no significant difference in the modulus of elasticity of wires between all 3 subgroups. The Little’s irregularity index decreased over time, and the difference between the groups was not significant. No significant difference was found between the groups in terms of inter-canine width.

Section: Discussionsupporting

confidence: 93%

Mechanical properties and clinical performance of different brands of nickel titanium archwires following intraoral use

Aboalnaga

et al. 2022

ijhs

Dental Press J. Orthod.

“…The present study used both round and rectangular archwire sequences for complete alignment. Most studies 18 , 20 , 21 , 31 , 32 in the past included only round wires and very few reported the use of both round and rectangular wires in evaluation of alignment efficiency. 22 , 30 …”

Section: Discussionmentioning

confidence: 99%

“…In the present study, we assessed mandibular incisors, which are the most commonly affected teeth after maxillary incisors. 11 Direct comparison with previous studies was difficult, as most of the studies evaluated root resorption using either different type of appliances, 40 different archwires and their sequences, 18 , 29 assessment time, 16 , 18 , 29 imaging software or type of imaging modality. 41 , 42 Future studies can benefit from the uniformity in the method and timing of assessment of EARR.…”

Section: Discussionmentioning

confidence: 99%

“…Previous studies comparing different NiTi, CuNiTi or multi-stranded stainless-steel (SS) archwires did not find any significant differences in terms of alignment efficiency and EARR. 18 - 24 However, there is insufficient data to make clear recommendations regarding the superiority of any available archwire, in relation to their effectiveness and efficacy, due to the small number of robust in-vivo studies. 24 A Cochrane review stated that more extensive studies are needed to formulate specific guidelines.…”

Section: Introductionmentioning

confidence: 99%

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Alignment efficiency and three-dimensional assessment of root resorption after alignment with conventional and copper-nickel-titanium archwires: A randomized controlled trial

BHATIA,

CHUGH,

SHANKAR

et al. 2023

Objective: To compare alignment efficiency and root resorption between nickel-titanium (NiTi) and copper-nickel-titanium (CuNiTi) archwires after complete alignment in mandibular anterior region. Methods: In this two-arm parallel single-blind randomized controlled trial, forty-four patients with Class I malocclusion with mandibular anterior crowding were recruited form orthodontic clinic of All India Institute of Medical Sciences (Jodhpur, India). Patients were randomly allocated into NiTi and CuNiTi groups, with a 1:1 allocation. Alignment was performed using 0.014-in, 0.016-in, 0.018-in, 0.019x0.025-in archwire sequence in the respective groups, which terminated in 0.019 x 0.025-in stainless-steel working archwire. The primary outcome was alignment efficiency, measured on study models from baseline (T0) to the first, second, third, fourth and fifth-month (T5). Secondary outcome was root resorption, measured from CBCT scans taken at T0 and T5. Mixed-factorial ANOVA was used to compare Little’s Irregularity Index (LII). For assessing the proportion of patients with complete alignment at the end of each month, Kaplan-Meier survival curve was built and time to treatment completion was compared between groups using log rank test. Paired t-test was used to assess external apical root resorption (EARR) within groups, whereas independent t-test was used to evaluate LII and EARR between the groups. Results: Twenty-two patients were recruited in each group. One patient was lost to follow-up in the CuNiTi group. No statistically significant differences were observed in alignment efficiency between the groups (p>0.05). Intergroup comparison revealed that the changes in root measurement in three-dimensions were not statistically significant (p>0.05), except for mandibular right central incisor, which showed increased resorption at root apex in NiTi group (p<0.01). Conclusion: The two alignment archwires showed similar rate of alignment at all time points. Root resorption measurement did not differ between the NiTi and CuNiTi groups, except for the mandibular right central incisor, which showed more resorption in NiTi group.

“…Like any medical treatment, orthodontic treatment may have side effects such pain, root resorption, periodontal disease, temporomandibular dysfunction, caries, speech problems and enamel damage. [1][2][3][4][5] Pain is a common experience in orthodontic patients and is considered the most important factor deterring patient referral for further treatment. 6 Orthodontic pain arises from ischemia, inflammation, and edema in the compressed periodontal ligament.…”

Section: Introductionmentioning

confidence: 99%

Effect of ibuprofen and low-intensity pulsed ultrasound on the reduction of pain after initial archwire placement: a double-blind randomized clinical trial

Farzanegan¹,

Bamrood²,

Rangrazi³

et al. 2022

J Oral Res

Objective: This study aimed to compare the effect of ibuprofen and low-intensity pulsed ultrasound (LIPUS) on the reduction of pain after the placement of initial archwire in orthodontic patients. Material and Methods: This double-blind clinical trial study was carried out on 60 female candidates for fixed orthodontic treatment referring to the Orthodontic Department of School of Dentistry in Mashhad University of Medical Sciences, Mashhad, Iran, during 2015-2016. The subjects were divided into four groups of ibuprofen, LIPUS, placebo, and mock LIPUS. A questionnaire and a rectangular and flexible cubic silicone were given to each patient to record the severity of pain based on the visual analog scale at specified time points (i.e., 2 h, 6 h, at bedtime, 2nd, 3rd, and 7th days after archwire placement) when biting the silicone block with the anterior and posterior teeth and without biting at all. Repeated measures analysis of variance was used in order to compare the pain severity at different time points. Results: The comparison of pain severity at various time points showed that the highest and lowest mean scores of pain were reported at bedtime and seven days after the intervention (p<0.001). In each of the three conditions (i.e., biting the silicone block with the anterior and posterior teeth and without biting the teeth) at six time points (i.e., 2 h, 6 h, at bedtime, 2nd, 3rd, and 7th days following archwire placement), no significant difference was observed in the severity of pain (p>0.05). Conclusion: In conclusion, LIPUS (with a frequency of 1 MHz and an intensity of 100 mW) and ibuprofen have no significant effects on reduction of the pain severity at different time points and various conditions in orthodontic patients.