Ortho Tutorials Flashcards
I/O checks for an UE canine
Palpate from 9 B+P
Mobility of C’s
Mobility of upper laterals
SI’s for an UE canine
OPT + anterior maxillary occlusal
OR
2 PA’s(1 on canine and 1 on central) parallax + CBCT
Causes of UE 3
Trauma to primary - dilaceration
Long path of eruption
Genetics
Crowding
Ectopic tooth germ
Tx options for UE 3
- Accept
- Surgical removal of ectopic canine
- Surgical exposure + fixed appliance
- XLa C, expose canine + gold chain - XLa of C’s
- Autotransplantation
Risks of doing nothing for UE3
Resorption of adjacent teeth
Resorption of canine crown
Ankylosis of UE3
Dentigerous cyst
Loss of C + complex tx required
When would you decide to surgically remove the ectopic canine?
If it is not deemed alignable (above apical 3rd of incisors)
Too close to midline
If pt happy with appearance and good long term prognosis of C
Pt doesn’t want to wear ortho appliance
Early RR visible in Xray
What does the success of XLa the C’s depend on?
90% success until 13
90% - if <50% overlap of lateral incisor
60% - if >50% overlap of lateral incisor
I/O checks for UE maxillary incisor
Palpate to feel UE successor
SI’s for UE maxillary incisor
PA + anterior maxillary occlusal (+/- OPT if more than 1 issue)
List causes of dilacerations
Trauma to primary
Tooth root deflection from cysts/supernumerary
Tx options for UE maxillary incisor
- Do nothing
- Surgically expose central
- Remove UE central
How do we surgically expose central
Make space with URA
Gold chain expose and bond +traction 2wks after exposure
What are the risks of surgically exposing a central
May fail to erupt
Ankylosis
External RR of central
Poor aesthetics
When would we consider removing the UE central
Pt not keen on lengthy tx
Tooth fails to respond to ortho traction (becomes ankylosed)
Severe dilacteration - can’t align
What are the risks associated with removing the UE central
Damage to adjacent teeth
Loss of space within arch for future tx
Loss of alveolar bone for implants
