Moustafa Abdou Elsyad
Mansoura University, Egypt
Title: The influence of resilient liner and clip attachments for bar-implant retained mandibular overdentures on opposing maxillary ridge. A 5-year randomized clinical trial
Biography
Biography: Moustafa Abdou Elsyad
Abstract
This study aimed to compare the influence of resilient liner and clip attachments for bar-implant retained mandibular overdentures on opposing maxillary ridge after 5 years of denture wearing. Thirty edentulous male patients received 2 implants in the anterior mandible after being allocated into 2 equal groups using balanced randomization. After 3 months, implants were connected with resilient bars. New maxillary complete dentures were then constructed and mandibular overdentures were retained to the bars with either clips (group I, GI) or silicone resilient liners (group II, GII). The prosthetic and soft tissue complications of the maxillary dentures were recorded 6 months (T6m), 1 year (T1), 3 years (T3) and 5 years (T5) after overdenture insertion. Traced rotational tomograms were used for measurements of maxillary alveolar bone loss (R). Change in R immediately before (T0) and after 5 years (T5) of overdenture insertion was calculated. Maxillary denture relining times and frequency of flabby anterior maxillary ridge occurred significantly more often in GI compared to GII. The change of R in anterior part of maxilla was significantly higher than change of R in posterior part in both groups. GI showed significant resorption of anterior residual ridge compared to GII. Relining times and frequencies of flabby ridge were significantly correlated with change in R. Within the limitations of this study, resilient liner attachments for bar-implant retained mandibular overdentures are associated with decreased resorption and flabbiness of maxillary anterior residual ridge and fewer maxillary denture relining times when compared to clip attachments.