Comparative Assessment of Failure Rate of Fixed Lingual Retainer Between Two Types of Light Cured Resin Composite

Comparative Assessment of Failure Rate of Fixed Lingual Retainer in Finished Orthodontic Cases Between Two Types of Light Cured Resin Composite. A Randomized Clinical Trial

The study will be performed on human subjects with finished orthodontic treatment to see the failure rate(detachment) of fixed lingual retainer between two types of light cure resin composite

The study consists of two groups, the intervention involve performing bonding of fixed lingual retainer with light cured composite Transbond LR which is manufactured specific for the fixed lingual retainer while the control group involve bonding of fixed lingual retainer by light cured composite Transbond XT with follow up every month for 6 month to see the failure rate(detachment) between the two types of composite

Inclusion Criteria:

• Patient at the end of an orthodontic treatment requiring the subsequent application of a lingual and palatal fixed retainer
• good oral hygiene
• medically free

Exclusion Criteria:

• Facial trauma
• onychophagia
• habit of biting pencils or pens
• tooth mobility