Malocclusions

Question 1

Patients with an endogenous tongue thrusts tend to show

Answer 1

Proclination of both the upper and lower incisors,
An anterior openbite,
An associated lisp, and
The tongue tends to sit between the incisors at rest

Question 2

Malocclusions more prone to relapse

Answer 2

Rotations
Diastemas

Hawley’s appliance is the most commonly used retainer

Question 3

Etiology of Anterior cross bite

Answer 3

– Trauma.
– Arch length discrepancy.
– Retained deciduous teeth.
– Failure of resorption of roots of deciduous leads to
lingual eruption of permanent teeth.
– Occlusal prematurities lead to forward path of closure
causing anterior cross bite
* evaluate patients for possible Pseudo-Class III
– Loss of upper deciduous molars leads to collapse of
maxillary anterior arch leading to functional
displacement.
– Asymmetric growth of maxilla and mandible.