Unfavorable sequelae of malocclusion
• Poor facial appearance
• Risk of caries
• Predisposition to periodontal diseases
• Psychological Disturbances
• Risk of trauma
• Abnormalities of Function
• TMJ dysfunction
...
Unfavorable sequelae of malocclusion
• Poor facial appearance
• Risk of caries
• Predisposition to periodontal diseases
• Psychological Disturbances
• Risk of trauma
• Abnormalities of Function
• TMJ dysfunction
Aims of orthodontic treatment
Jackson’s triad:
1. Functional Efficiency
2. Structural Balance:
• Dentoalveolar system
• Skeletal Tissue
• Soft Tissue including Musculature
3. Esthetic Harmony
Scope of Orthodontic Treatment
3 main tissue systems:
• Dentition
• Skeleton
• Facial and jaw Musculature
Orthodontic changes due to
• Alteration in tooth position
• Alteration in skeletal pattern
• Alteration in soft tissue pattern
3 branches of Orthodontics
1. Preventive
2. Interceptive
3. Corrective
• Surgical Orthodontics
Preventive Orthodontics
Characteristics of a deciduous dentition
• Flush Terminal Plane
• Generalized spacings on anterior teeth
• Tight contacts on posterior teeth
• Minimal OJ and OB
• Primate spaces
Characteristics of a mixed dentition
• Early Mesial shift
• Late Mesial shift: leeway space
• Mesial inclination of the roots of 1 and 2
• Mild Crowding of antertior teeth
Procedures:
1. Patient and parent education
2. Supervision of growth and development
3. Caries Control
4. Elimination of oral habits
5. Space Maintenance
1. Patient and Parent Education
Aim: Increase dental awareness
Begins before birth:
• Infections
• Teratogens
• proper nutrition
After birth:
• Proper Brushing technique
• Breast feeding? Bottle Feeding?
2. Supervision of Growth and Development
Visit the dentist as soon as the 1st tooth comes out.
The dentist should:
• Check what is “normal”
• Age and Sequence of eruption
Permanent Teeth
Sequence:
Maxillary: 61245378 or 61243578
Mandibular: 61234578 or 61243578
Age of eruption
Maxillary
1: 7-8 2: 8-9 3:11-12 4:10-11 5:10-12 6:6-7 7:12-13 8:17-21
Mandible
1:6-7 2: 7-8 3: 9-10 4: 10-12 5:11-12 6:6-7 7:11-13 8: 17-21
Deciduous Dentition
Sequence:
Maxillary: ABDCE
Mandibular: ABCDE
Age of eruption
Maxillary: a:7.5 b:9 c: 19 d: 14 e: 24
Mandibular: a: 6 b: 7 c: 16 d: 12 e:20
• Less than or equal to 3 months difference in contralateral side exfoliation and shedding
• Eruption should be 3-6 months after exfoliation
• Delayed eruption:
Check for presence of:
• Over retained deciduous teeth/roots
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