01 - Orthodontic Records

facial balance

different people naturally have different facial profiles and proportions, and an “ideal” dental relationship can occur with many different facial types

• consider individual facial characteristics, skeletal relationships, soft tissue profile, racial and ethnic norms

orthodontic records

each provides different information

1. xrays of head and teeth

2. models of teeth

3. photos of face and teeth

radiographic records

• panoramic —

  • tooth position → determine teeth present and their positions

  • root position and length → unusual root position and length influence treatment planning

  • eruption during mixed dentition

    • ectopic eruption → tooth erupting along abnormal path

    • delayed eruption → tooth not erupting when expected

  • missing teeth → can have congenital missing teeth

  • third molars

  • TMJ

• cephalometric — standardized lateral radiograph of skull

  • identifies anatomic points → skeletal relationship

  • angles and measurements → assess direction of growth

    • SNA = 82; SNB = 80; ANB = 2

• full mouth series

• CBCT — 3D radiographic information

models of teeth

allow evaluation of tooth arrangement, arch form, occlusion, space, crowding, interarch relationships

• plaster models → historically made using physical sotne/plaster casts

• digital models → intraoral scans to create digital models

orthodontic photographs

photographs establish the starting point, showing the initial occlusal relationship

• documents malocclusion, shows facial balance, allows evaluation of treatment process