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Single crowns on tooth root-resected molars: A retrospective multicentric study
Johannes H Schmitz1, Stefano Granata2, Paolo Magheri3
1Private practice, Milan, Italy.
The Journal of Prosthetic Dentistry
|December 23, 2019
Summary
Single crowns on root-resected molars demonstrate high survival rates, comparable to implants. First molars and those with two roots offer better outcomes for these dental restorations.
Area of Science:
- Restorative Dentistry
- Prosthodontics
- Endodontics
Background:
- Limited data exists on single restorations for molars undergoing root resection and separation.
- Root resection and hemisection are procedures aimed at preserving molars with complex pathology.
Purpose of the Study:
- To retrospectively evaluate the clinical success and survival rates of single crowns placed on molars after root resection.
- To assess the long-term outcomes of preserving molars through root resection and single crown restoration.
Main Methods:
- A retrospective analysis of 86 molars treated with root resection or hemisection and restored with single crowns.
- Feather-edge margin preparation was utilized for all restorations.
- Patients were followed up through regular recall appointments, with data analyzed using descriptive statistics.
Main Results:
- The mean follow-up period was 88.7 months, with a range of 6 to 284 months.
- A cumulative survival rate of 93% was observed, with only six failures during the study period.
- First molars and molars with two retained roots exhibited superior survival rates compared to second molars.
Conclusions:
- Single crowns on root-resected molars with feather-edge margins achieve clinical outcomes comparable to single crowns on molar implants.
- The findings support the long-term viability of single crowns following molar root resection.
- Tooth-specific factors, such as molar type and number of retained roots, influence survival rates.
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