Adult Orthodontics Flashcards
What are the main features which distinguish adult and child orthodontics?
Lack of growth from adult
Periodontal disease
Missing/restored teeth more common
Physiological factors
Adults more motivated
Why can’t growth modification be utilised in adults?
They’ve stopped growing
Accept discrepancy or surgery
Overbite correction more difficult
Midpalatal suture closed, can only expand with surgery
What does loss of periodontal support lead to from an orthodontic viewpoint?
Tooth center of rotation moves apically
Anchorage value decreases
Does previous attachment loss preclude orthodontic treatment?
No, active disease does - the patient would need to get this under control for orthodontics to be considered.
What impact do missing teeth and restorations have on orthodontic treatment?
Tooth loss leading to drifting/tilting
More likely to be restored, which may complicate bonding
RCT is okay, provided obturation is good and symptomless
What physiological factors come in to play with adult orthodontics?
Decreased cell turnover
Initial movement slower
Lighter forces needed
How can orthodontic treatment assist restorative treatment?
Upright abutments to aid restoration (for bridge POI)
Intrusion of over-erupted teeth
Extrusion to increase crown length
What local malocclusions may be worsened by periodontal treatment?
Proclined incisors
Spacing
Increased overbite
Who might be involved in the MDT for orthognathic surgery?
Orthodontist, maxillofacial surgeon, technologist, clinical psychologist.
What are andrews six keys?
Class I incisors
Class I molars
Flat occlusal plane or curve of Spee
Long axis have slight mesial inclinication
Posterior crowns have a slight lingual inclination
Give three examples of short term orthodontics?
Clear aligners
Inman aligner
Six month smile
What are some drawbacks of short term orthodontics?
Periodontal attachment loss
Gingival recession
Bone dehiscence
Instability
