Violation
The most common cause of malocclusion with a Class I molar relationship is
crossbite in the posterior segments
tooth size and jaw size discrepancy.
a thumbsucking habit
improper eruption of permanent first molars
The most common cause of malocclusion with a Class I molar relationship is
crossbite in the posterior segments
tooth size and jaw size discrepancy.
a thumbsucking habit
improper eruption of permanent first molars