Randomized shortened dental arch study: tooth loss over eight years
Objectives: This multicenter randomized controlled clinical trial was designed to provide clinical outcome data for two treatments of the shortened dental arch (SDA).
Methods: Patients with complete molar loss in one jaw were provided with either a partial removable dental prosthesis (PRDP) retained with precision attachments or were treated according to SDA concept aiming at a premolar occlusion without molar replacement. Implant treatments were excluded. Primary outcome was tooth loss. For evaluation, patient related Kaplan-Meier survival analyses were performed.
Results: Of 215 enrolled patients, 152 were actually treated. Over 8 years, 56 patients experienced tooth loss. For the primary outcome tooth loss regardless of the jaw, the 8-year Kaplan-Meier survival rates were .540 (SE .067) in the PRDP group and .634 (SE .066) in the SDA group. A further analysis was conducted for tooth loss in the study jaw, i.e. the jaw in which the study treatment had been delivered. The respective survival rates were .678 (SE .061) in the PRDP group and .671 (SE .066) in the SDA group. With both analyses, the survival functions showed a steady, almost linear decline over time in both groups. No significant group differences were found (Log Rank test, P=.05).
Conclusion: The overall treatment goals of a sustainable oral rehabilitation and the avoidance of further tooth loss over longer periods were not reliably achievable. No influence of the type of prosthetic treatment on tooth loss was found. In view of this result, patient preferences gain further importance in clinical decision making.
Division: IADR/AMER General Session
Meeting:2014 IADR/AMER General Session (Cape Town, South Africa) Location: Cape Town, South Africa
Year: 2014 Final Presentation ID:1373 Abstract Category|Abstract Category(s):Prosthodontics Research
Authors
Walter, Michael
( University of Dresden, Dresden, , Germany
)
Jahn, Florentine
( Friedrich Schiller Universität Jena, Jena, N/A, Germany
)
Strub, Joerg R.
( University Hospital, School of Dentistry, Freiburg, N/A, Germany
)
Pospiech, Peter
( Julius-Maximilian University of Würzburg, Würzburg, , Germany
)
Brückner, Julian
( University of Leipzig, Leipzig, , Germany
)
Wolfart, Stefan
( University Hospital RWTH Aachen, Aachen, , Germany
)