Biology of tooth movement, biomechanics basics
Orthodontics and Dentofacial Orthopedics · Dental (BDS)
Tooth explorer
Interactive 3DPeel through enamel, dentin and pulp — then switch to implants, braces or dentures.
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Study notes
Why do orthodontists prefer light continuous forces over heavy forces? Light forces compress the periodontal ligament gently, triggering organized bone resorption ahead and deposition behind — the tooth glides. Heavy forces crush the ligament's blood supply (hyalinization), creating a dead zone that must be cleared before movement resumes — slower overall, plus root resorption risk. Students learn the paradox: lighter forces move teeth faster and safer than heavy ones.
Related topics
- Growth and development of craniofacial complex
- Development of dentition and occlusion: deciduous to permanent
- Malocclusion: Angle's classification, Ackerman-Proffit system
- Etiology of malocclusion: genetic, environmental, habits
- Diagnostic records: study models, photographs, radiographs
- Cephalometrics: landmarks, analyses — Steiner, Tweed, Downs