Your browser doesn't support javascript.
Alexithymia Predicts Cognitive Deficits In Patients With Idiopathic Parkinson's Disease.
J Ayub Med Coll Abbottabad ; 31(1): 26-31, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-30868778


Most of the orthodontic cases require a long period of retention which is usually carried out with the help of fixed retainers (FR). One of the downsides of FR is that these are prone to breakages. The aim of the present study was to identify the frequency and factors associated with failure of fixed spiral wire retainers..


A retrospective crosssectional 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. Chi-square test was applied to compare the frequency of breakages among age groups and different retainer spans. Independent sample ttest 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%. Maxillary retainer breakages were found in 41.3% subjects whereas mandibular retainer failed in 22.2% subjects. The mean survival time of retainer 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%). All the subjects who had retainers extending till maxillary molars encountered breakages..


A longer retainer span is associated with a greater risk of breakage. Failure rate in the maxillary arch was higher than the mandibular arch. The most common sites were the maxillary canine and mandibular central incisor. The most common pattern was wire detachment.





Coleções: Bases de dados internacionais Base de dados: MEDLINE Assunto principal: Falha de Prótese / Contenções Ortodônticas Aspecto clínico: Etiologia / Predição / Prognóstico Limite: Adolescente / Adulto / Criança / Feminino / Humanos / Masculino / Jovem adulto Idioma: Inglês Revista: J Ayub Med Coll Abbottabad Assunto da revista: Medicina Ano de publicação: 2019 Tipo de documento: Artigo País de afiliação: Paquistão