Cross Bite

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INDIAN DENTAL ACADEMY
Leader in continuing dental education
www.indiandentalacademy.com

www.indiandentalacademy.com
Introduction
It is a term used to describe abnormal
occlusion in the transeverse plane
 A Cross bite represents the distu...
Classification of cross bite


A. Anterior Cross Bite
1.Single tooth
2.Segmental
B . Posterior Cross Bite
1.Unilateral
2....
Etiology of Cross Bite








Retained deciduous tooth
Crowding and abnormal displacement of one or
more teeth
Prese...


Collapse of maxillary arch as seen in cleft
palate



Sagital discrepancy of the jaws



Unilateral hypo or hyperplas...
Anterior cross bite
Reverse overjet is seen

- single tooth or segmental


www.indiandentalacademy.com
Posterior Cross Bite
Abnormal transverse relationship between
upper and lower post teeth
 Lack of co-ordination in the la...
Buccal non-occlusion-Maxillary posterior occlude entirely on the
buccal aspect of mandibular posteriors
-Scissors Bite


...
Skeletal Cross Bite


It occurs as a result of mal position or
malformation of the jaws



Generally characterized by na...
Dental Cross Bite


Results due to localized disturbances
-Ectopic eruption of permanent
tooth
-Over retained deciduous t...
Functional Cross Bite
Presence of occlusal interferences
result in deviation of mandible during
jaw closure – Unilateral C...


Lingual non- occlusion
Maxillary posteriors occlude entirely on the
lingual aspect of mandibular teeth

www.indiandenta...
Differential diagnosis between
skeletal and dental cross bite
- Dental origin usually exhibits abnormal
buccal or lingual ...
Dentoalveolar
Crossbite with
good apical base
width

www.indiandentalacademy.com


Cross Bite with
deficient apical
base width

www.indiandentalacademy.com
Treatment
In primary dentition
If the inter molar width is satisfactory
- Elimination of deflective occlusal
contacts
If b...
Early Mixed dentition
-Anterior Cross Bite
 Extracting the primary teeth if there
is not enough space
 If sufficient spa...


Posterior cross bite
Removable or fixed appliance

www.indiandentalacademy.com


Late mixed dentition
Maxillary arch expansion
-Skeletal: opening the mid-palatal
suture
-Dental : fixed or removable
ap...
www.indiandentalacademy.com
Leader in continuing dental education

www.indiandentalacademy.com
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Cross bite /certified fixed orthodontic courses by Indian dental academy

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Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.

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Transcript of "Cross bite /certified fixed orthodontic courses by Indian dental academy "

  1. 1. Cross Bite www.indiandentalacademy.com
  2. 2. INDIAN DENTAL ACADEMY Leader in continuing dental education www.indiandentalacademy.com www.indiandentalacademy.com
  3. 3. Introduction It is a term used to describe abnormal occlusion in the transeverse plane  A Cross bite represents the disturbances in the bucco palatal or labio lingual direction when brought into occlusion  www.indiandentalacademy.com
  4. 4. Classification of cross bite  A. Anterior Cross Bite 1.Single tooth 2.Segmental B . Posterior Cross Bite 1.Unilateral 2.Bilateral C. Based on the nature of bite as: 1. Skeletal 2. Dental 3. Functional cross bite www.indiandentalacademy.com
  5. 5. Etiology of Cross Bite      Retained deciduous tooth Crowding and abnormal displacement of one or more teeth Presence of habits such as thumb sucking Retarded growth of maxilla in both sagital as well as vertical direction Narrow upper arch due to decreased growth stimulation in the mid palatal suture www.indiandentalacademy.com
  6. 6.  Collapse of maxillary arch as seen in cleft palate  Sagital discrepancy of the jaws  Unilateral hypo or hyperplastic growth of any jaw www.indiandentalacademy.com
  7. 7. Anterior cross bite Reverse overjet is seen  - single tooth or segmental  www.indiandentalacademy.com
  8. 8. Posterior Cross Bite Abnormal transverse relationship between upper and lower post teeth  Lack of co-ordination in the lateral dimension between upper and lower arches.  www.indiandentalacademy.com
  9. 9. Buccal non-occlusion-Maxillary posterior occlude entirely on the buccal aspect of mandibular posteriors -Scissors Bite  www.indiandentalacademy.com
  10. 10. Skeletal Cross Bite  It occurs as a result of mal position or malformation of the jaws  Generally characterized by narrow maxillary arch www.indiandentalacademy.com
  11. 11. Dental Cross Bite  Results due to localized disturbances -Ectopic eruption of permanent tooth -Over retained deciduous tooth www.indiandentalacademy.com
  12. 12. Functional Cross Bite Presence of occlusal interferences result in deviation of mandible during jaw closure – Unilateral Cross Bite   Habitual forward positioning of the mandible www.indiandentalacademy.com
  13. 13.  Lingual non- occlusion Maxillary posteriors occlude entirely on the lingual aspect of mandibular teeth www.indiandentalacademy.com
  14. 14. Differential diagnosis between skeletal and dental cross bite - Dental origin usually exhibits abnormal buccal or lingual axial inclination - Symmetry of dental arches on diagnostic study model - Determine if there is any lateral shift of the mandible during closure www.indiandentalacademy.com
  15. 15. Dentoalveolar Crossbite with good apical base width www.indiandentalacademy.com
  16. 16.  Cross Bite with deficient apical base width www.indiandentalacademy.com
  17. 17. Treatment In primary dentition If the inter molar width is satisfactory - Elimination of deflective occlusal contacts If both molar and inter canine widths are narrow -Expansion of upper arch is indicated  www.indiandentalacademy.com
  18. 18. Early Mixed dentition -Anterior Cross Bite  Extracting the primary teeth if there is not enough space  If sufficient space is present Removable appliance is given  www.indiandentalacademy.com
  19. 19.  Posterior cross bite Removable or fixed appliance www.indiandentalacademy.com
  20. 20.  Late mixed dentition Maxillary arch expansion -Skeletal: opening the mid-palatal suture -Dental : fixed or removable appliance Single tooth cross bites: cross elastics are used www.indiandentalacademy.com
  21. 21. www.indiandentalacademy.com Leader in continuing dental education www.indiandentalacademy.com

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