Stability, survival, patient satisfaction, and cost-minimization of CAD/CAM versus conventional multistranded fixed retainers in orthodontic patients: a 2-year follow-up of a two-centre randomized controlled trial

被引：4

作者：

Pullisaar, Helen ^{[1
]}

Cattaneo, Paolo M. ^{[2
,3
]}

Gera, Arwa ^{[2
,4
]}

Sankiewicz, Monika ^{[2
,5
]}

Bilinska, Malgorzata ^{[2
,6
]}

Vandevska-Radunovic, Vaska ^{[1
]}

Cornelis, Marie A. ^{[2
,3
,7
]}

机构：

[1] Univ Oslo, Inst Clin Dent, Fac Dent, Dept Orthodont, Geitmyrsveien 69-71, N-0455 Oslo, Norway

[2] Aarhus Univ, Dept Dent & Oral Hlth, Sect Orthodont, Vennelyst Blvd 9, DK-8000 Aarhus C, Denmark

[3] Fac Med Dent & Hlth Sci, Melbourne Dent Sch, Melbourne, Australia

[4] Yanai St 4, IL-9418123 Jerusalem, Israel

[5] Aarhus Univ Hosp, Dept Oral & Maxillofacilal Surg, Palle Juul Jensens Blvd 99, DK-8200 Aarhus, Denmark

[6] Jagiellonoian Univ, Dept Orthodont, Montelupich 4, Pl-31155 Krakow, Poland

[7] Fac Med, Melbourne Dent Sch, Dent & Hlth Sci, 720 Swanston St, Carlton, Vic 3053, Australia

来源：

EUROPEAN JOURNAL OF ORTHODONTICS | 2024年 / 46卷 / 02期

关键词：

orthodontic fixed retainers; computer-aided design/computer-aided manufacturing; stability; failure rate; patient satisfaction; cost-minimization; UNEXPECTED COMPLICATIONS; PERIODONTAL HEALTH; LINGUAL RETAINER; ALIGNMENT; FAILURE;

D O I：

10.1093/ejo/cjae006

中图分类号：

R78 [口腔科学];

学科分类号：

1003 ;

摘要：

Background CAD/CAM (computer-aided design/computer-aided manufacturing) fixed retainers (FRs) as an alternative to multistranded FRs to maintain orthodontic treatment outcome.Objectives The primary aim was to compare CAD/CAM versus conventional multistranded FRs in terms of stability until 2 years. Secondary outcomes were failure rates, patient satisfaction, and cost-minimization.Trial design 2-arm parallel, two-centre randomized controlled trial.Methods Patients were randomized to CAD/CAM or conventional FRs in both arches, in a 1:1 ratio and blocks of four. Allocation concealment was secured by using sequentially numbered envelopes. Patients were blinded. FRs were bonded at the end of treatment, and patients were recalled after 12 and 24 months. First-time retainer failures were recorded and digital impressions were taken. Arch widths and lengths, as well as Little's Irregularity Index (LII), were measured. Additionally, patients answered satisfaction questionnaires. Linear mixed models were applied for measurements and patient satisfaction. Survival analyses were estimated with Kaplan-Meier curves, along with Cox-regression modelling. Cost-minimization analysis was undertaken.Results One hundred and eighty-one patients were randomized (98 in Centre 1, and 83 in Centre 2): 90 in CAD/CAM and 91 in conventional group. One hundred and fifty three patients attended T24 follow-up. There were no significant differences in LII and arch dimensions between groups for failure-free patients. Within 24 months, 34% maxillary CAD/CAM FRs and 38% maxillary conventional FRs failed, along with 42% mandibular CAD/CAM FRs and 40% mandibular conventional FRs, with no significant difference in survival between groups (hazard ratios conventional to CAD/CAM: maxillary arch: 1.20 [P = 0.46], mandibular arch: 0.98 [P = 0.94]). There were no significant differences in patient satisfaction between groups. No harms were observed. Cost-minimization analysis showed that CAD/CAM FRs were slightly cheaper than conventional FRs.Conclusions There were no clinically significant differences in LII, arch widths, and lengths between CAD/CAM and conventional FRs after 24 months. There were no differences in failures and patient satisfaction between groups. CAD/CAM FRs were slightly cheaper than conventional FRs.Trial registration ClinicalTrials.gov NCT04389879.

引用

页数：10