Innovative customized CAD/CAM nickel-titanium lingual retainer versus standard stainless-steel lingual retainer: A randomized controlled trial

Emilie Gelin; Laurence Seidel; Annick Bruwier; Adelin Albert; Carole Charavet

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저자정보: Emilie Gelin (University Hospital of Liège) Laurence Seidel (University Hospital of Liège) Annick Bruwier (University Hospital of Liège) Adelin Albert (University Hospital of Liège) Carole Charavet (University Hospital of Liège)

저널정보: 대한치과교정학회 대한치과교정학회지 대한치과교정학회지 제50권 제6호

발행연도: 2020.11

수록면: 373 - 382 (10page)

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Objective: To compare computer-aided design and computer-aided manufacturing (CAD/CAM) customized nitinol retainers with standard stainless-steel fixed retainers over a 12-month study period. Methods: This randomized controlled trial (RCT) was conducted on 62 patients randomly allocated to a control group that received stainless-steel retainers or a test group that received customized CAD/CAM nickel-titanium retainers. Four time points were defined: retainer placement (T0) and 1-month (T1), 6-month (T2), and 12-month (T3) follow-up appointments. At each time point, Little’s irregularity index (LII) (primary endpoint) and dental stability measurements such as intercanine width were recorded in addition to assessment of periodontal parameters. Radiological measurements such as the incisor mandibular plane angle (IMPA) were recorded at T0 and T3. Failure events (wire integrity or debonding) were assessed at each time point. Results: From T0 to T3, LII and other dental measurements showed no significant differences between the two groups. The data for periodontal parameters remained stable over the study period, except for the gingival index, which was slightly, but significantly, higher in the test group at T3 (p = 0.039). The IMPA angle showed no intergroup difference. The two groups showed no significant difference in debonding events. Conclusions: This RCT conducted over a 12-month period demonstrated no significant difference between customized CAD/CAM nickel-titanium lingual retainers and standard stainless-steel lingual retainers in terms of dental anterior stability and retainer survival. Both retainers eventually appeared to be equally effective in maintaining periodontal health.

#Randomized clinical trial #Digital models #CAD/CAM #Retainer

참고문헌 (30)

참고문헌 신청

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Yu Y / 2013 / Interventions for managing relapse of the lower front teeth after orthodontic treatment / Cochrane Database Syst Rev (9):CD008734

Wolf M / 2015 / Novel lingual retainer created using CAD/CAM technology : evaluation of its positioning accuracy / J Orofac Orthop 76:164~174

Kartal Y / 2019 / Fixed orthodontic retainers : a review / Turk J Orthod 32:110~114

Kravitz ND / Bonded lingual retainers

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