West China Journal of Stomatology ›› 2018, Vol. 36 ›› Issue (3): 296-300.doi: 10.7518/hxkq.2018.03.013

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Relationship between initial archwire materials and pain at the initial stage of orthodontic treatment: a systematic review and network Meta-analysis

Chang Liu1(), Yan Wang2, Weilin Pan1, Changhao Yu1, Jingyuan Huang1, Chengge Hua1,3()   

  1. 1. State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Dept. of Oral and Ma-xillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China;
    2. State Key Labo-ratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Dept. of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China;
    3. State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Dept. of Evidence Based Dentistry, West China Hospital of Stomatology, Sichuan Uni-versity, Chengdu 610041, China;
  • Received:2017-11-21 Revised:2018-03-09 Online:2018-06-01 Published:2018-06-01

Abstract:

Objective This review aims to assess the relationship between initial archwire materials and pain at the initial stage of orthodontic treatment. Methods On October 1, 2017, seven databases were searched electronically for studies oninitial archwire materials and pain at the initial stage of orthodontic treatment. Quality assessment was performed with bias risk assessment tools suggested by Cochrane’s handbook. Data extraction of included studies was also carried out. Network Meta-analysis was conducted using R 3.4.2 (with JAGS 4.3.0), GeMTC 0.14.3, and STATA 11.0. Results Five studies with 330 participants were included, comparing four different materials: multi-stranded stainless steel, conventional nickel-titanium, super-elastic nickel-titanium, and thermal heat-activated nickel-titanium. Two studies were at low risk of bias, one was at high risk of bias, and the remaining two were at unclear risk of bias. Network Meta-analysis results showed no statistical differences of pain among the four initial archwire materials at day 1 and day 7. However, the most painless material was most likely to be thermal heat-activated nickel-titanium on rank probability. Conclusion On statistical probability, thermal heat-activated nickel-titanium initial arch wires is most likely to cause the least pain at the initial stage of orthodontic treatment, compared with other materials.

Key words: orthodontic wires, pain, dental alloys, systematic review, network Meta-analysis

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