The purpose of the study was to investigate the treatment outcomes on the abutments with severely advanced periodontitis (SAP) and secondary occlusal trauma (SOT), using the Sandwich’s technique of combined provisional prosthesis (PP), non-surgical periodontal therapy (NSPT) and crown and sleeve- coping telescopic denture (CSCTD). A total of 272 teeth were used as the abutments of 45 CSCTDs, which

included PP, NSPT, and CSCTDs. Clinical records revealed that teeth that received PP, NSPT, and CSCTDs had follow-up periods ranging from 5.1to 39 years in maxillary and mandibular teeth, respectively. The periodontal parameters of the abutments included gingival index, plaque index, probing depth, and clinical attachment levels at the baseline and the end of study. Supportive periodontal treatment was made at 2- to 3-month intervals. The average cumulative survival rate of abutments was 93.0%. The distal free end abutment (DFEA) survival rate was 89.1%. Twelve DFEAs that were lost, accounting for a failure rate of 63.2% among a total 19 DFEAs for CSCTD therapy throughout the end of the study. We concluded that the use of Sandwich’s technique in treating SAP with SOT appeared to be an alternative and valuable option.