Now indicate the reasons for using these springs. e.g. Double cantilever spring: is used to vary the direction of movement and where space for springs are confirmed. 0.5mm wire is usually utilised for this type of spring.
Now do Canine retractors, Coffin springs and Cantilever springs
Canine Retractor: Use: Used where a bucally placed canine has to be moved palatally as well as distally. 0.7mm wire is used to provide stability. Also less flexible than a palatal spring.
Coffin Spring: Use: Used for transverse arch expansion, e.g. to treat a unilateral crossbite with lateral mandibular displacement. A thick gauge wire of 1.25mm is used.
Cantilever Spring (Singel/Finger spring): Use: Used to move teeth labially or in the line of the arch. Construced from 0.5mm wire
Canine Retractor: coils are used to close rather than open and coils lies in labial sulcus yes 0.7 or 0.6 mm wire can be used with tubing with these internal diameter
Coffin Spring: used for expanding or contracting the upper or lower arches in a lateral direction. Your have the wire gauge correct.
Cantilever Spring: coils of this spring opens rather than closes and the arm of this spring acts as a lever.
Cheryl Wolfe, Damien Storey, Ruan Louw & Rwyda Dawids
ReplyDeletePalatal Springs:
Single cantilever spring (finger spring)
Double cantilever spring ("Z" spring)
"T" spring
Coffin spring
Buccal Springs:
Buccal canine retractor
Supported buccal retractor
Reverse loop buccal retractor
Soldered auxilary spring
Isaacson, K.G., Muir, J.D. & Reed, R.T. Removable Orthodontic Appliances. Oxford: Wright. p19-23
Now indicate the reasons for using these springs.
ReplyDeletee.g. Double cantilever spring: is used to vary the direction of movement and where space for springs are confirmed. 0.5mm wire is usually utilised for this type of spring.
Now do Canine retractors, Coffin springs and Cantilever springs
Palatal Springs:
ReplyDeleteSingle cantilever spring (finger spring)
Double cantilever spring (Z spring)
T spring
Coffin spring
Buccal Springs:
Buccal canine retractor
Supported buccal retractor
Reverse loop buccal retractor
Soldered auxilary spring
Isaacson, K.G., Muir, J.D. & Reed, R.T. Removable Orthodontic Appliances. Oxford: Wright. p19-23
Canine Retractor:
ReplyDeleteUse: Used where a bucally placed canine has to be moved palatally as well as distally.
0.7mm wire is used to provide stability. Also less flexible than a palatal spring.
Coffin Spring:
Use: Used for transverse arch expansion, e.g. to treat a unilateral crossbite with lateral mandibular displacement.
A thick gauge wire of 1.25mm is used.
Cantilever Spring (Singel/Finger spring):
Use: Used to move teeth labially or in the line of the arch.
Construced from 0.5mm wire
Canine Retractor: coils are used to close rather than open and coils lies in labial sulcus
ReplyDeleteyes 0.7 or 0.6 mm wire can be used with tubing with these internal diameter
Coffin Spring: used for expanding or contracting the upper or lower arches in a lateral direction. Your have the wire gauge correct.
Cantilever Spring: coils of this spring opens rather than closes and the arm of this spring acts as a lever.