Table 3 Summary of key statistics from the 130 cases presented across the 23 included articles
From: Molar-root incisor malformation — a systematic review of case reports and case series
Characteristic | Descriptive statistics |
|---|---|
Age (mean ± SD, years) | 8.9 ± 2.99 |
Gender(n = 122) | |
Male Female | 54.1% 45.9% |
Medical history | |
Neurological conditions Premature/low birthweight Medications in first years of life Surgeries in first years of life | 48.5% 24.6% 26.0% 33.8% |
Affected teeth | |
One or more first permanent molars (FPM) All four FPM Mandibular FPM only Maxillary FPM only Upper permanent central incisors All second primary molars | 99.2% 39.2% 0.02% 0% 16.9% 39.1% |