Table 1.
Characteristics of included studies.
| Study | Country | Type of Study | Sample Size | Mean Age |
Dentition Stage |
Expansion Type |
Appliances Used |
Comparison Group |
Outcome Assessment | Retention Period |
|---|---|---|---|---|---|---|---|---|---|---|
| Memikoglu et al. [36] | Turkey | Prospective, cohort study without a control group | 14 | 12.8 ± 1.02 | Not mentioned | RME | Acrylic bonded appliance | N/A | Posterior-anterior film Dental cast |
6 mths |
| Micheletti et al. [37] | Brazil | Prospective cohort study with a control group | 10 | 8.3 ± 1.24 | Mixed dentition | RME | Haas appliance | Control group (untreated) |
Lateral cephalogram Dental cast |
6 mths |
| Lorente et al. [38] | Spain | Prospective cohort study without a control | 15 | 9.78 ± 2.4 | Mixed dentition | RME | Hyrax appliance | Compression to decompensation technique | Dental cast | 3–6 mths |
Abbreviation: RME, rapid maxillary expansion; N/A, not applicable.