Best retainer for midline diastema

 # In  case of orthodontically treated midline diastema which retainer should be used?
A. No need for retainer
B. Hawley appliance for 6 months
C. Lingual bonded retainer
D. Hawley appliance for 12 months

The correct answer is C. Lingual bonded retainer.

Fixed (bonded) orthodontic retainers are normally used in situations where  intra-arch instability is anticipated and prolonged retention is planned. 

There are four major indications:
- Maintenance of lower incisor position during late growth
- Diastema closure maintenance
- Maintenance of pontic or implant space
- Keeping extraction spaces closed in adults

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