Inês Cavaleiro, Marco Antonio de Carvalho Filho
Harnessing student feedback to transform teachers: Role of emotions and relationships
Medical education
conjunction post placement rootfilled teeth periapical healthy conditions root canal retreatment may performed improve seal root canal whether root canal retreatment technical reasons retreatments teeth without apical periodontitis ap results lower frequency ap unknown examine whether difference frequency ap roots root canals retreated technical reasons roots root canals retreated post placement minimum followup 5 years also examine changes root filling quality following root canal retreatment technical reasons retrospective study included radiographs 441 rootfilled roots without periapical radiolucencies baseline scheduled post core treatment followup data minimum 5 years available 305 roots loss followup 308 46 retreated technical reasons two calibrated observers assessed root filling sealing quality length respectively periapical status according periapical index main outcome study ap used dependent variable analyses performed root level overall frequency ap followup 138 difference frequency ap retreated 43 nonretreated 154 root canals statistically significant p 061 analyses including roots preoperatively inadequate root filling quality showed statistically significant difference p 017 two treatment groups 24 vs 229 root canal retreatment technical reasons post core placement significantly reduces frequency ap roots inadequate root filling quality