Careys and Lundstrom analysis

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Lundstrom and careys analysis

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Careys and Lundstrom analysis

  1. 1. GOOD AFTERNOON
  2. 2. CAREY'S ANALYSIS AND LUNDSTROM ANALYSIS By Dr. Tony Pious 1St yr orthodontics
  3. 3. CONTENTS ● INTRODUCTION TO MODEL ANALYSIS ● CAREY'S ANALYSIS -INTRODUCTION -PROCEDURE -INFERENCE ● LUNDSTROM ANALYSIS
  4. 4. MODEL ANALYSIS Model analysis is the study of dental casts, which helps to study the occlusion & dentition from all three dimensions & analyze the degree & severity of malocclusion & to derive the diagnosis & plan for treatment.
  5. 5. CAREY'S ANALYSIS ● ● ● The question of reduction of tooth structure as a treatment procedure in orthodontics has been a controversial one. The decision to extract must be preceeded by a great deal of thought and study. Esthetics is also an important consideration.
  6. 6. Many malocclusions occur as a result of discrepancy between arch length and tooth material. Arch perimeter analysis helps in determining the extend of this discrepancy in maxillary arch. Same method on the upper arch is called ' ARCH PERIMETER 'Analysis method.
  7. 7. Arch length anterior to first permanent molar is measured by using a soft brass wire. The wire is placed touching the mesial surface of the first permanent molar and is passed over the buccal cusps of premolar and along the anterior and is continued on the opposite side.
  8. 8. In case of proclined anteriors the wire passed along the cingulum of anterior teeth. And in retroclined anterior it passes along the labial to the teeth.
  9. 9. Determination of tooth material
  10. 10. INFERECE If discrepancy is 0-2.5 mm minimal tooth material excess,proximal reduction can be carried out 2.5 – 5 mm need to extract second PM > 5 mm need to extract the first PM
  11. 11. LUNDSTROM SEGMENTAL ANALYSIS Segmental analysis involves an indirect assessment of dental arch perimeter. The dental arch is divided into six straight line segments of two teeth per segment, including first permanent molars, the record the mesiodental width of the teeth and sum them for each segment and add them up for net discrepancy.
  12. 12. DISCREPANCY CALCULATION The difference between the actual and ideal arch length, on the alignment of the teeth is determined by amount of dental crowding and antero-posterior positioning of incisors in relation to the facial skeleton. Performed on both arches.
  13. 13. CONCLUSION

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