a) soft biteguard: increase grinding, bulky, decrease airway space

b) soft-hard guards (Hybrids): increase clench, can’t repair-retread-tighten

c) hard nightguard: tighter insertion, loose retentiveness, can be adapted

d) ARS (worn 24/7): major changes bites, requires cost Ortho or CR/BR

e) Orthotic: requires use other orthopedic tools