Archwires of Coaxial Superelastic Nickel-Titanium (NiTi) provide Greater Tooth Movement than Wires made of Single-strand Superelastic NiTi

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Archwires of Coaxial Superelastic Nickel-Titanium (NiTi) provide Greater Tooth Movement than Wires made of Single-strand Superelastic NiTi

A newly developed coaxial superelastic nickel-titanium (NiTi) archwires help to produce better tooth movements over 12 weeks in comparison of single-strand superelastic NiTi.

The first archwires introduced in the orthodontic treatment to correct alignment of teeth by rectifying crowding and rotations were the Initial archwires. Due to the number of alternatives of orthodontic archwires, the choice of the most efficient one that causes less pain and root reabsorption along with tooth movement at the beginning aligning phase of the treatment is crucial.

 Therefore, Yan Wang and colleagues analyzed the effect of various archwires to align teeth with fixed orthodontic braces. The study was an update of a review that was published in 2010 " entitledInitial archwires for alignment of crooked teeth with fixed orthodontic braces".

The Medline Cochrane Central Register of Controlled Trials (CENTRAL), Ovid, World Health Organization International Clinical Trials Registry Platform, US National Institutes of Health Trials Registry and Embase Ovid were searched to extract study-related databases. During database search, no restriction on publication date or mode of language were placed. Randomised controlled trials (RCTs) with full arch, upper/lower or both fixed orthodontic instruments were included in the trial. The data extraction, study selection and risk of bias evaluation were done via two review authors. The disagreements were resolved through discussion. Missing information was obtained through the corresponding authors. The quality of evidence of each comparison assessed as per GRADE criteria and ranked as very low, low, medium or high.

A total 12 RCTs (3 new RCTs with 228 patients) with 799 patients were analyzed. Out of 12 RCTs, six were unclear; three were at high risk and three at low risk of bias. No root reabsorption related adverse outcomes were noticed. The trial comprised evaluation of six comparisons -

Superelastic NiTi versus Multistrand stainless steel archwires

The comparison included five studies with insufficient evidence related to dissimilarity in the alignment rate between the groups (low-quality evidence). The VAS score finding also indicated no significant difference between these two approaches on day 1 (moderate-quality evidence) and the data was appropriate for meta-analysis.

Thermoelastic NiTi versus Multistrand stainless steel archwires

The comparison involved two studies, but the data was not appropriate for meta-analysis. This group also exhibited low-quality evidence regarding alignment rate among the groups. No pain measurement was done.

Superelastic NiTi versus Conventional NiTi archwires

A total of three studies were evaluated, but the data was not appropriate for meta-analysis. Group comparison exhibited very low to low-quality evidence with regards to either pain or alignment.

Thermoelastic NiTi versus Conventional NiTi archwires

A total of two studies were evaluated, but the data was not appropriate for meta-analysis. Low-quality evidence was present regarding alignment rate. No pain measurement was done.

Coaxial superelastic NiTi versus Single-strand superelastic NiTi archwires

There was only one study with moderate-quality evidence that coaxial superelastic NiTi can generate higher tooth movement over 12 weeks as compared to other modality. No pain measurement was done.

Thermoelastic NiTi versus Superelastic NiTi

A total of three studies were found with low-quality evidence for alignment rate.

As per the analysis, no high-quality evidence was observed. Coaxial superelastic nickel-titanium (NiTi) archwires were found to produce better tooth movement as compared to Multistrand stainless steel archwires and by comparison group as reported by moderate-quality evidence. Expect these findings; only insufficient data were obtained with other archwires comparison groups.

Source

Cochrane Database Syst Rev           

Link to the Source:

https://www.ncbi.nlm.nih.gov/pubmed/30064155

The original title of the article:

Initial archwires used in orthodontic treatment with fixed appliances

Authors:

Yan Wang et al.

SearchTags: 
Therapeutic, Dental Pain, Teeth
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