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Published on: February 10, 2014
Retrospective Clinical Evaluation of Non-Engaging Abutments Used for Multi-Unit Screw-Retained Fixed Prosthesis
Paolo De Angelis1, Margherita Giorgia Liguori2, Edoardo Rella1
1Division of Prosthodontics, Institute of Clinical Dentistry, Department of Neuroscience, Sensory Organs and Chest, IRCCS Agostino Gemelli Foundation University Hospital, Catholic University of the Sacred Heart, 00168 Rome, Italy.
Non-engaging abutments show excellent short-term results for multi-unit implant restorations, with 100% survival and low complication rates. These abutments are a reliable option for dental prostheses, though further long-term research is recommended.
Area of Science:
- Dental Implantology
- Prosthodontics
- Periodontology
Background:
- Evaluating clinical performance of non-engaging abutments in multi-unit implant-supported prostheses.
- Assessing the impact of abutment combinations on biological and technical outcomes.
Purpose of the Study:
- To evaluate the clinical performance of non-engaging abutments in multi-unit implant restorations.
- To analyze the influence of different abutment combinations on biological and technical outcomes.
Main Methods:
- Retrospective study of 40 patients with 90 implants and 40 fixed dental prostheses.
- Follow-up of 2.17 years, analyzing survival rates, probing depth, bone loss, and complications.
- Comparison of non-engaging abutments alone or combined with engaging/multi-unit abutments using ANOVA and Tukey's test.
Main Results:
- 100% implant and prosthesis survival rates observed.
- Mean marginal bone loss of 0.53 mm and probing pocket depth of 4.2 mm.
- 11.11% mucositis prevalence; 5% technical complication rate; no peri-implantitis.
Conclusions:
- Non-engaging abutments demonstrate favorable short-term clinical outcomes.
- Minimal biological and technical complications were noted with non-engaging abutments.
- Non-engaging abutments are a reliable option for multi-unit prostheses, warranting long-term investigation.
