An 11-year reevaluation of resin-bonded fixed partial dentures

Area of Science:

• Dental Materials Science
• Prosthodontics
• Clinical Dentistry

Background:

• Clinical success of resin-bonded fixed partial dentures (RFPDs) hinges on long-term retention.
• Evaluating factors influencing RFPD retention is essential for predictable clinical outcomes.

Purpose of the Study:

• To assess the retention rates of RFPDs over an extended period.
• To investigate the influence of luting agents, prosthesis location, and operator expertise on RFPD longevity.

Main Methods:

• A retrospective study evaluated 77 RFPDs placed in 66 patients by three dentists over 1 to 11 years.
• Data collected included debonding events, rebonding success, and factors like luting agent, prosthesis location, and operator experience.

Main Results:

• Overall failure rate was 27% (21 out of 77 prostheses), with 39% (30 prostheses) initially dislodging.
• Luting agents demonstrated a significant impact on retention, with some materials showing excessive debonding rates.
• Prosthesis location and operator expertise had minimal influence on restoration longevity.

Conclusions:

• The choice of luting agent is a critical determinant of RFPD retention.
• Predictable retention can be achieved with appropriate material selection and potentially enhanced preparation designs.
• Further research into material-specific performance and preparation modifications is warranted.