pISSN 2234-7518
eISSN 2005-372X
eISSN 2005-372X
Characteristics of included studies
| Author | Year | Design | Group | Size | Sex (male/female) | Average age (yr) | Appliance | Activation protocol | Retention time | Measurement methods | Follow-up |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Lagravère et al.18 | 2010 | >RCT | >MARPE | 21 | >8/13 | 14.24 ± 1.32 | >Bone-borne | >0.25 mm/d | >6 months | >CBCT | >6 months, 1 year |
| >RPE | 20 | >5/15 | 14.05 ± 1.35 | >Hyrax expander | >0.5 mm/d | >6 months | |||||
| >Control | 21 | >6/15 | 12.86 ± 1.19 | — | — | — | |||||
| Lin et al.17 | 2015 | >NRCT | >MARPE | 15 | >0/15 | 18.1 ± 4.4 | >C-expander | >0.25 mm/d | — | >CBCT | >3 months |
| >RPE | 13 | >0/13 | 17.4 ± 3.4 | >Hyrax expander | |||||||
| Yılmaz et al.15 | 2015 | >NRCT | >MARME | 14 | >8/6 | 13.2 ± 2.1 | >Bone-borne expander | 0.4 mm/d for first 7–10 d, 0.2 mm/3 d after the opening of the suture | — | Cephalograms, posteroanterior radiographs, dental casts | — |
| >Bonded RME | 14 | >8/6 | 12.1 ± 2.1 | >Bonded expander | |||||||
| >Banded RME | 14 | >6/8 | 13.4 ± 1.7 | >Banded expander | |||||||
| Akin et al.19 | 2016 | >NRCT | >MARPE | 9 | >5/4 | 13.61 ± 0.72 | >Hybrid expander | 0.5 mm/d for the first week, then 0.25 mm/d for 3 weeks | — | >CBCT | — |
| Choi et al.8 | 2016 | >NRCT | >MARPE | 20 | >10/10 | 20.9 ± 2.9 | >Bone-borne expander | >0.2 mm/2 d | >3 months | Posteroanterior cephalograms | >30.2 ± 13.2 months |
| Cantarella et al.16 | 2017 | >NRCT | >MARPE | 15 | >6/9 | 17.2 ± 4.2 | Maxillary skeletal expander | 0.5 mm/d at first, then 0.25 mm/d after inter-incisal diastema appeared | >More than 3 months | >CBCT | — |
| Lim et al.10 | 2017 | >NRCT | >MARPE | 24 | >8/16 | 21.6 ± 3.1 | >Bone-borne expander | >0.2 mm/d | >4 months | >CBCT | 1 year (14.17 ± 2.70 month) |
| Park et al.12 | 2017 | >NRCT | >MARPE | 14 | >9/5 | 20.1 ± 2.4 | >Bone-borne expander | >0.2 mm/d | — | >CBCT | — |
| Celenk-Koca et al.20 | 2018 | >RCT | >Conventional- RME |
20 | >8/12 | 13.84 ± 1.36 | >Hyrax expander | >2 turns/d | — | >CBCT | — |
| >MARPE | 20 | >7/13 | 13.81 ± 1.23 | Miniscrew-support expander | |||||||
| Ngan et al.14 | 2018 | >NRCT | >MARPE | 8 | >6/2 | 21.9 ± 1.5 | Maxillary skeletal expander | Varied with the severity of transverse discrepancy | — | >CBCT | — |
| Oliveira et al.11 | 2020 | >NRCT | >MARPE | 28 | >10/18 | 15–37 | Miniscrew-support expander | >2/4 turn/d | >4 months | >CBCT | >6 months |
| Jia et al.13 | 2021 | >RCT | >MARPE | 30 | >9/21 | 14.8 ± 1.5 | >Hyrax expander | >0.5 mm/d | >3 months | >CBCT | — |
| >Hyrax | 30 | >12/18 | 15.1 ± 1.6 | Four-point MARPE expander |
RCT, randomized controlled trial; NRCT, non-randomized controlled trial; MARPE, miniscrew-assisted rapid palatal expansion; RPE, rapid palatal expansion; RME, rapid maxillary expansion; CBCT, cone beam computed tomography.