重庆医科大学：《口腔正畸学》课程教学课件（PPT讲稿）反牙合 Crossbite

ANIMATION FACTORY 反牙合 Crossbite 2 郑雷蕾 重庆医科大学口腔医学院

反 牙合 C r o s s b i t e 郑 雷 蕾 重庆医科大学口腔医学院

Content Anterior crossbites大 ·Posterior crossbite

Content • Anterior crossbites ★ • Posterior crossbite

Anterior Chapter 1 crossbites

Chapter 1 Anterior crossbites

Outline requirement ANIMATION FACTORY Familiar: Etiology Master: ·definition clinical manifestation 。 Diagnosis and differential diagnosis treatment principles

Outline requirement Familiar： • Etiology Master： • definition • clinical manifestation • Diagnosis and differential diagnosis • treatment principles

Part 1 Definition (master)

Part 1 Definition (master)

Definition Anterior crossbites indicates that in the central occlusion,anterior teeth present reversed overbite and reversed overjet. It may be caused by the improper inclination of the maxillary and mandibular incisors, occlusal interferences(functional),or skeletal discrepancies of the maxilla or the mandible. ◇

Definition • Anterior crossbites indicates that in the central occlusion, anterior teeth present reversed overbite and reversed overjet. • It may be caused by the improper inclination of the maxillary and mandibular incisors, occlusal interferences (functional), or skeletal discrepancies of the maxilla or the mandible

Normal Occlusion the mesiobuccal cusp of the upper first molar is received in the sulcus between the mesial and distal buccal cusps of the lower first molar. The mesial incline of the upper canine occludes with the distal incline of the lower canine;the distal incline of the upper canine occludes with the mesia incline of the buccal cusp of the lower first premolar

the mesiobuccal cusp of the upper first molar is received in the sulcus between the mesial and distal buccal cusps of the lower first molar. The mesial incline of the upper canine occludes with the distal incline of the lower canine; the distal incline of the upper canine occludes with the mesial incline of the buccal cusp of the lower first premolar. Normal Occlusion

Normal Occlusion ClassⅢMalocclusion

Normal Occlusion Class Ⅲ Malocclusion