Non-Cochrane · aetiology · PM41552034
Association between Maxillary and Mandibular Length and Crowding in Classes 1, 2, and 3 Skeletal Malocclusion: A Systematic Review and Meta-analysis.
Lucas Marshal, Kannan Annapurna, Kailasam Vignesh · International journal of clinical pediatric dentistry · 2025 · PubMed · doi:10.5005/jp-journals-10005-3353
Findings
Population Patients with class 2 skeletal malocclusion seeking orthodontic treatment
3 findings
| Mandibular crowding >3 mm (group I) | Mandibular crowding <3 mm (group II) | Maxillary crowding Pretreatment (cross-sectional) · Orthodontic patients, pretreatment records | MD 4.08 [1.61, 6.56] Low 2 studies · 140 participants |
| Mandibular crowding >3 mm (group I) | Mandibular crowding <3 mm (group II) | Maxillary length (Co-A) Pretreatment (cross-sectional) · Orthodontic patients, pretreatment records | MD -1.97 [-6.59, 2.66] Low 2 studies · 140 participants |
| Mandibular crowding >3 mm (group I) | Mandibular crowding <3 mm (group II) | Mandibular length (Co-Gn) Pretreatment (cross-sectional) · Orthodontic patients, pretreatment records | MD -4.00 [-5.69, -2.32] Low 2 studies · 140 participants |
Included primary studies 5
Open in Studies| Study | Year | Also included by | Outcomes it informs here | Trial data |
|---|---|---|---|---|
| Crossley et al. 2020 Is there a relationship between dental crowding and the size of the maxillary or mandibular apical base? PMID:31549856 | 2020 | this review only | not stated | not extracted yet |
| Janson et al. 2011 Relationship between maxillary and mandibular base lengths and dental crowding in patients with complete Class II malocclusions. PMID:21208072 | 2011 | this review only | Maxillary length (Co-A); Mandibular length (Co-Gn); Maxillary crowding | not extracted yet |
| Khoja et al. 2014 Association of maxillary and mandibular base lengths with dental crowding in different skeletal malocclusions. PMID:25672157 | 2014 | this review only | not stated | not extracted yet |
| Montasser and Taha 2012 Relationship between dental crowding, skeletal base lengths, and dentofacial measurements. PMID:23260539 | 2012 | this review only | not stated | not extracted yet |
| Singh and Shivaprakash 2017 To Evaluate the Correlation Between Skeletal and Dental Parameters to the Amount of Crowding in Class II Div. 1 Malocclusions. PMID:29207827 | 2017 | this review only | Maxillary length (Co-A); Mandibular length (Co-Gn); Maxillary crowding | not extracted yet |
Review question
| Element | Planned (methods) | Found (results) |
|---|---|---|
| Population | Patients seeking orthodontic treatment with class 1, 2 or 3 skeletal malocclusion; exclusions: fractured restorations or broken crowns, tooth anomalies of number, size, form or position, premature or delayed exfoliation or extraction of deciduous teeth, periodontal problems, craniofacial syndromes | 380 subjects (class 1 n=160, class 2 n=180, class 3 n=40) aged 11 to 44.5 years in 5 studies; meta-analysis of 2 studies in class 2 malocclusion (n=140) |
| Intervention | Maxillary and mandibular base length | Mandibular crowding >3 mm (group I, n=55) with maxillary length Co-A and mandibular length Co-Gn |
| Comparison | Not specified | Mandibular crowding <3 mm (group II, n=85) |
| Outcomes | Amount of dental crowding (maxillary and mandibular) | Maxillary length; mandibular length; maxillary crowding (mm) |
| Study designs | Studies reporting an association between maxillary and mandibular base length and crowding | 5 retrospective studies (2 in meta-analysis) |
| Timing | Not specified | Pretreatment records |