The most common issues that create failures of overdentures and All on X cases can be traced to several planning and clinical mistakes. Dr. Strong will illustrate measures to avoid these problems using pretreatment checklists with analog and digital technologies. Strategies and procedures to correct or manage problems using best practices for impressions, centric relation records, vertical dimension, attachment selection and pickup will be detailed. A novel design to complete cases with inadequate inter-arch space will also be reviewed.