(Fermuar üç kritere göre sınıflandırılır.)

B-1 ) DİŞLERİN İLK MADDESİNE GÖRE

• METAL FERMUAR: Pirinç (Oksit – Kalay), Alpaka( Nikel – Nikel oksit ), Bakır ( Bakır oksit ) , Alüminyum
• NAYLON FERMUAR: (Pilastik ,Polyester )
• KEMİK FERMUAR: ( Poliasetal )

B-2 ) DİŞLERİN KALINLIĞINA GÖRE

METAL FERMUAR TİP DİŞ GENİŞLİĞİ (mm)

TİP2………………………………………3.50-3.60                                   TİP 8……………………………………..8.10-8.20
TİP4………………………………………4.45-4.55                                   TİP10…………………………………….8.50-8.60
TİP5………………………………………5.80-6.00                                   

NAYLON FERMUAR TİP DİŞ GENİŞLİĞİ (mm)

TİP5 ……………………………………..4.00-4.20                                   TİP10…………………………………….5.90-6.00
TİP7………………………………………4.90-5.00                                   TİP11 ……………………………………6.30-6.40

KEMİK FERMUARLAR TİP DİŞ GENİŞLİĞİ (mm)

TİP 3……………………………………..4.40-4.50                                   TİP 9…………………………………….8.50-8.60
TİP 6 …………………………………….7.80-7.90

B-3 ) BİTMİŞ FERMUAR TÜRLERİ