Oral Health and Dental Management

Failure analysis of maxillary and mandibular bonded spiral wire retainers

28^th Asia Pacific Congress on Dental and Oral Health

July 10-12, 2017 Kuala Lumpur, Malaysia

Sarah Irfan

Aga Khan University Hospital, Pakistan

Posters & Accepted Abstracts: Oral Health Dent Manag

Abstract:

Fixed spiral wire retainers offer several advantages, however they are prone to breakages which may result in relapse. The aim of the present study was to identify the frequency and factors associated with failure of fixed spiral wire retainers. A retrospective cross-sectional study was conducted using orthodontic files and dental casts of 126 patients from dental clinics of a tertiary care hospital. Descriptive statistics were applied to calculate the frequency and most common site of breakages. Chisquare test was applied to compare the frequency of breakages among age groups and different retainer spans. Independent sample t-test was used to compare the mean overbite in retainer breakage and retainer intact groups. A p-value�?�0.05 was considered as statistically significant. The frequency of retainer breakage was found to be 53.1%. Failure rate in the maxillary arch was higher than the mandibular arch. Maxillary retainer breakages were found in 41.3% subjects whereas mandibular retainer failed in 22.2% subjects. The mean survival time of retainer before breakage was 8.91±4.57 months. The detachment of the retainer from the tooth surface was the most common occurrence (86%). The most common site of retainer breakage was maxillary canine (32.5%) and mandibular central incisor (12.7%). A longer retainer span is associated with a greater risk of breakage. All the subjects who had retainers extending till maxillary molars encountered breakages.

Biography :

Email: Sarah.irfan@aku.edu, Sarahirfan88@yahoo.com