1/12/2014 1. 2 3 4 5 6 7 lecture 8 ingrid reed dds, ms department of orthodontics & dentofacial...
TRANSCRIPT
![Page 1: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/1.jpg)
04/10/23
1
![Page 2: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/2.jpg)
04/10/23
2
![Page 3: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/3.jpg)
04/10/23
3
![Page 4: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/4.jpg)
04/10/23
4
![Page 5: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/5.jpg)
04/10/23
5
![Page 6: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/6.jpg)
04/10/23
6
![Page 7: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/7.jpg)
04/10/23
7
![Page 8: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/8.jpg)
LECTURE 8INGRID REED DDS, MS
DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS
Anterior and Posterior Crossbites
04/10/23
8
![Page 9: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/9.jpg)
Anterior Crossbite
Dental – on or two teeth Abnormal axial inclination Retained primary tooth Crowding Usually Class I
Skeletal - Class III ANB <0° Look at molar relationship Take ceph
Pseudo Class III – shift due to interferences when end to end occlusion Check bite in CR vs. CO for interference
04/10/23
9
![Page 10: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/10.jpg)
Anterior Cross bite - Dental
04/10/23
10
![Page 11: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/11.jpg)
04/10/23
11
![Page 12: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/12.jpg)
Anterior Crossbite - dental
04/10/23
12
![Page 13: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/13.jpg)
Anterior Crossbite - Dental
04/10/23
13
![Page 14: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/14.jpg)
Anterior Crossbite - Skeletal
04/10/23
14
![Page 15: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/15.jpg)
Anterior Crossbite - Skeletal
04/10/23
15
![Page 16: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/16.jpg)
Treatment – Dental anterior crossbite
Tongue bladeRemovable appliance with finger springFixed appliancesPossible extraction of adjacent deciduous
teeth
04/10/23
16
![Page 17: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/17.jpg)
Tongue blade
04/10/23
17
![Page 18: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/18.jpg)
04/10/23
18
![Page 19: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/19.jpg)
Hawley with finger spring
04/10/23
19
![Page 20: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/20.jpg)
04/10/2320
![Page 21: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/21.jpg)
Hawley with finger spring
Assess space availableAlginate impressionPour in yellow stoneFabricate Hawley with clasps and finger spring
Bend finger spring so it unwinds in the direction it was wound
Build up molars to clear occlusionDeliver applianceActivate spring every few weeksSelf retaining
04/10/23
21
![Page 22: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/22.jpg)
04/10/23
22
![Page 23: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/23.jpg)
Dental Anterior Crossbite
04/10/23
23
![Page 24: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/24.jpg)
04/10/23
24
![Page 25: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/25.jpg)
04/10/23
25
![Page 26: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/26.jpg)
04/10/23
26
![Page 27: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/27.jpg)
04/10/23
27
![Page 28: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/28.jpg)
Anterior crossbite of lateral incisors
Maxillary laterals usually erupt to the lingual if inadequate space
04/10/23
28
![Page 29: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/29.jpg)
Retention of Anterior Crossbites
Good overbite relationshipShould be self retainingTipping tooth forward – vertical change in
overbite
04/10/23
29
![Page 30: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/30.jpg)
Cleft Palate
04/10/23
30
![Page 31: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/31.jpg)
04/10/23
31
![Page 32: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/32.jpg)
04/10/23
32
![Page 33: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/33.jpg)
Cleft palate treatment sequence
TIME PROCEDURE
2-4 weeks Lip closure
12-18 months Palate closure
7-8 years Alignment of maxillary incisors, expansion of maxilla, as preparation for alveolar graft
7-9 years Alveolar bone graft (before eruption of lateral incisor, if present, or canine)
Adolescence Comprehensive orthodonticsLip /nose revision
Late adolescence
Orthognathic surgery?
04/10/23
33
![Page 34: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/34.jpg)
Cleft palate – orthodontic problems
Problems from repair –not cleft itself Lip repair – constriction across anterior of maxilla –
anterior crossbite Palate repair – constriction laterally – posterior
crossbite
Problems from cleft Maxillary incisors erupt rotated and in crossbite Lateral incisor and/or canine in area of cleft missing
or impacted Cleft area doesn’t have bone for eruption – alveolar
graft needed
04/10/23
34
![Page 35: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/35.jpg)
Early permanent dentition treatment
Correct maxillary incisors Rotations Crossbite Position
Expand maxillaAlveolar bone graft
04/10/23
35
![Page 36: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/36.jpg)
04/10/23
36
![Page 37: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/37.jpg)
Unrepaired cleft - TG 1-24-03
04/10/23
37
![Page 38: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/38.jpg)
TG 1-24-03
04/10/23
38
![Page 39: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/39.jpg)
TG 1-24-03
04/10/23
39
![Page 40: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/40.jpg)
TG 7-25-07
04/10/23
40
![Page 41: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/41.jpg)
TG 10-25-08
04/10/23
41
![Page 42: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/42.jpg)
TG 10-25-08
04/10/23
42
![Page 43: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/43.jpg)
04/10/23
43
![Page 44: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/44.jpg)
TG 10-25-08
04/10/23
44
![Page 45: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/45.jpg)
Early Permanent Dentition Treatment
Canine & premolar on cleft side – malalignedClose spaces if missing teethPosition teeth as need for prosthetics Dental implants are not appropriate for cleft
areas
04/10/23
45
![Page 46: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/46.jpg)
Orthognathic surgery - cleft palate patients
Males > femalesGrowth – return of anterior and/or lateral
crossbites Usually deficient maxillary growth Normal mandibular growth
04/10/23
46
![Page 47: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/47.jpg)
•SKELETAL
•DENTAL
Posterior Crossbites
04/10/23
47
![Page 48: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/48.jpg)
Posterior Crossbite
Posterior crossbite – position of maxillary molars Bilateral maxillary lingual crossbite Unilateral maxillary lingual crossbite
Asymmetric maxillary arch Unilateral mandibular buccal crossbite
Normal maxilla Asymmetric mandible
Maxillary buccal crossbite
04/10/23
48
![Page 49: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/49.jpg)
Why does this crossbite exist?
Bilateral maxillary palatal crossbite Maxilla narrow - skeletal basis Dental arch narrowed – skeletal width correct
04/10/23
49
![Page 50: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/50.jpg)
04/10/23
50
![Page 51: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/51.jpg)
04/10/23
51
![Page 52: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/52.jpg)
04/10/23
52
![Page 53: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/53.jpg)
Rapid Palatal Expander
04/10/23
53
![Page 54: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/54.jpg)
Posterior Crossbites
04/10/23
54
![Page 55: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/55.jpg)
04/10/23
55
![Page 56: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/56.jpg)
Dental Posterior Crossbite
04/10/23
56
![Page 57: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/57.jpg)
04/10/23
57
![Page 58: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/58.jpg)
Oral habits – disruptive to occlusion
Thumb suckingFinger suckingTongue thrustNail bitingLip bitingLip sucking
04/10/23
58
![Page 59: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/59.jpg)
Thumb (finger) sucking - phases
Phase IBirth to 3 years
Normal , especially associated with weaning. Usually self eliminated.
Phase II3 to 6 or 7 years
3-4 years: mild displacement of primary teeth; normal lip & cheek pressure will restore teeth to usual position if sucking stopsAfter eruption of permanent incisors: if sucking persists, stop habit and start orthodontic treatment to correct tooth displacement.Constricted maxilla: least likely to correct spontaneously
Phase III Thumb sucking may be a sign of psychological problemsTalk to childAppliance to help child
04/10/23
59
![Page 60: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/60.jpg)
Thumb (finger sucking)
04/10/23
60
![Page 61: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/61.jpg)
Effects of thumb sucking
Tongue lowered to accommodate thumbCheek pressure
Greatest at corners of mouth More constriction at canines V- shaped palate Lingual movement of maxillary molars Mandibular molars unchanged Anterior teeth and premaxilla can be moved
04/10/23
61
![Page 62: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/62.jpg)
04/10/2362
Cheek
Tongue
![Page 63: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/63.jpg)
Malocclusion due to sucking habit
Lower incisors
Lingual displacement
Upper incisors
Labial displacement
Maxillary arch
Narrow
Interarch relation
Anterior open bite
04/10/23
63
![Page 64: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/64.jpg)
Treatment
04/10/23
64
Crib
![Page 65: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/65.jpg)
Treatment – palatal expander
04/10/23
65
![Page 66: 1/12/2014 1. 2 3 4 5 6 7 LECTURE 8 INGRID REED DDS, MS DEPARTMENT OF ORTHODONTICS & DENTOFACIAL ORTHOPEDICS Anterior and Posterior Crossbites 1/12/2014](https://reader038.vdocuments.mx/reader038/viewer/2022102923/551424d85503466d1a8b4a20/html5/thumbnails/66.jpg)
Reference
04/10/23
66
Contemporary Orthodontics, 4th Contemporary Orthodontics, 4th Edition Edition
William R. ProffitWilliam R. ProffitHenry W. Fields Jr.Henry W. Fields Jr.David M. SarverDavid M. Sarver
Pages: 68, 147-149, 175-176 ,224-226, 244-248,437-443, Pages: 68, 147-149, 175-176 ,224-226, 244-248,437-443,
559-560, 622559-560, 622