Clinical trend of retention for mandibular single implant overdentures using locator attachment

Abstract

Purpose The purpose of this preliminary clinical research is to investigate the changes of retention in mandibular single implant overdentures S IOD retained by Locator attachment within ten months Materials and methods After single symphyseal implants were inserted in twenty one edentulous mandibular patients their complete dentures were modified as S IOD retained by Locator blue and pinks nylon Patrices Retentive force of SIODs were measured by portable force gauge monthly till to months but some patients needed to replace nylon patrices during months The condition of alveolar ridge was assessed by ACP classification of edentulous jaw for correlations The retentive force was analyzed by Steel Test with control and the correlations were analyzed by Spearman rsquo s rank correlation coefficient Results The baseline median retentive force was N for blue Patrices and N for pink P values comparing retention of each month with the baseline showed no significance throughout months The Spearmen rsquo s correlation coefficient for the changes of retention and initial retention was p those and condition of ridge was p Conclusion The initial retention of Locator is higher than the amount stated by manufacturer The trend of retention of locator in S IOD using over months showed no significant changes The correlation between changes of retention and initial retention and also with the condition of ridge was negative and weak