From: Successful treatment of multiple bilateral impactions - a case report
Ricketts analysis | Pretreatment (16 years, 4 months) | Posttreatment (19 years, 8 months) | ||||
---|---|---|---|---|---|---|
Norm | Value | Deviation | Norm | Value | Deviation | |
Cranial relations | ||||||
Facial axis (°) | 90 ± 3.5 | 88.4 | vertical growth type | 90 ± 3.5 | 89.0 | dolichofacial face type |
Mandibular plane (°) | 23.6 ± 4 | 34.0 | 29.6 ± 4 | 29.9 | ||
Mandibular arc (°) | 26 ± 4 | 30.1 | 27.7 ± 4 | 26.4 | ||
Lower facial height (°) | 45 ± 4 | 54.1 | 45 ± 4 | 58.1 | ||
Maxillary depth (°) | 90 ± 3 | 87.4 | maxilla ortho- to retrognathic | 90 ± 3 | 89.7 | maxilla orthognathic |
SN-Palatal plane (°) | 7.3 ± 3 | −3.3 | anterior rotation of maxilla | 7.3 ± 3 | −1.2 | less anterior rotation of maxilla |
Facial (angle) depth (°) | 89.4 ± 3 | 84.6 | mandible prognathic | 90.6 ± 3 | 85.7 | mandible prognathic |
Facial taper | 68 ± 3 | 61.4 | posterior rotation of mandible | 68 ± 3 | 64.4 | less posterior rotation of mandible |
Convexity of point A (mm) | −0.4 ± 2 | 2.6 | slight skeletal class III | −1.6 ± 2 | 3.8 | skeletal class III |
Denture Relations | ||||||
Upper incisor to A-Pog (mm) | 3.5 ± 2 | 10.7 | distinctly protruded | 3.5 ± 2 | 9.6 | slightly less protruded |
Upper incisor to FH (°) | 111 ± 4 | 105.5 | slightly retroinclined | 111 ± 4 | 107.4 | normally inclined |
Upper molar to PtV(mm) | 19.3 ± 1 | 15.2 | upper dental arch retruded | 22.7 ± 1 | 18.3 | upper dental arch retruded |
Lower incisor to A-Pog (mm) | 1 ± 2 | 6.5 | distinctly protruded | 1 ± 2 | 7.1 | distinctly protruded |
Lower incisor inclination (°) | 22 ± 4 | 24.5 | normally inclined | 22 ± 4 | 23.4 | normally inclined |
Interincisal angle (°) | 130 ± 6 | 132.4 | normal | 130 ± 6 | 131.8 | normal |
Molar relation (mm) | −3.0 ± 2 | −2.6 | Angle class I | −3.0 ± 2 | −1.1 | Angle class I |
Incisor Overjet (mm) | 2.5 ± 1 | 4.6 | increased | 2.5 ± 1 | 2.5 | normal |
Incisor Overbite (mm) | 2.5 ± 1 | 3.2 | increased | 2.5 ± 1 | 2.2 | normal |
Esthetic Relations | ||||||
Lower lip – E-Plane(mm) | −2 ± 2 | −3.9 | lower lip slightly retruded | < -2 ± 2 | −4.3 | lower lip slightly retruded |