56. Deepbite. Prevention and treatment

Question 1

Deep bite

Answer 1

• Excessive overbite=>
• Vertical measurement between maxillary and mandibular incisal margins excessive when mandible in habitual or centric occlusion

• can also be described as excessive overlap of lower incisors by upper incisors

Question 2

Different types of deep bites based on amount of overlap

Answer 2

• Normal=> 3 – 5mm overlap
• Moderate=> 5 – 7mm overlap
• Severe=> More than 7mm overlap

Question 3

Deep bite etiological classification

Answer 3

• Skeletal Deep Bite=>
• Horizontal growth pattern
• Upward and forward mandible rotation
• Downward and forward maxilla inclination
• Combination
• Dentoalveolar Deep Bite=>
• Supraerupted incisors
• Infraeruption of molars=>
• Lateral tongue thrust, early loss of deciduous teeth, wearing of occlusal surfaces
• Soft Tissue Deep Bite=>
• Associated w/ class II malocclusion and hypodivergent facial patterns

Question 4

Clinical manifestations of skeletal deep bite

Answer 4

• Reduced lower third of face
• Short anterior facial height
• Long posterior facial height
• Interocclusal clearance
• Parallel or convergent horizontal cephalometric planes
• Reduced mandibular plane angle
• Reduced gonial angle