Study Population AD N SD IA-S Method EA-S Notes Solari A & Abramovitch K [9] Hispanics 14-25 679 Present (♂) Present Solari Absent (Maxilla)   Prieto JL et al. [8] Spanish 14-21 1054 Present (♂) Present Demirjian --- Study in IM Garamendi PM et al. [3] Moroccan 13-25 114 --- Present Demirjian --- Study in IM of ♂ Martin-de las Heras et al. [24] Spanish Magrebian 14-23 477 95 Present (♂) Present Demirjian Absent (Maxilla)   Gunst K et al.  [5] Belgian 15-23 2513 Present (♂) Present Köhler Absent (Maxilla)   Bolaños MV et al. [10] Spanish 4-20 786 Absent Present Nolla Absent (Maxilla)   Knell B et al. [32] Swiss₤ 15-22 1260 Present (♂) Present Demirjian --- Study in IM Zeng DL et al.  [33] Chinese 4-26 3100 Present (♂) Present Demirjian Absent (Maxilla)   Kasper KA et al. [27] Hispanics (Texas) 12-22 950 Present (♂) Present Demirjian Absent (Maxilla)   Salvia AD et al. [28] Spanish 14-25 400 Present (♂) --- Demirjian Solari --- Study in one IM Mincer HH et al. [13] American 14-24 823 Present (♂) Absent Demirjian Absent (Maxilla)   Demirjian A et al. [34] French 2-20 2928 Present (♀) Present Demirjian --- Evaluation from CI to 2º M

Table 11: Resume board of the results obtained in different studies consulted. AD – Age distribution (in years); N – Number of individuals; SD – Sexual dimorphism (gender with early development); IA-S – Intra-arch synchrony; EA-S – Inter-arch synchrony (arch with early development); IM – Inferior molar; CI – Central incisor; Notes: ₤ - 9,76% of the sample were from other European countries (unspecified).