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Do bulk-fill resins decrease the restorative time in posterior teeth? A systematic review and meta-analysis of in

Mariana D Bellinaso¹, Fabio Z M Soares², Rachel de Olivera Rocha³

¹Postgraduate Program in Dental Science, Federal University of Santa Maria, Santa Maria, Rio Grande do Sul, Brazil.

Journal of Investigative and Clinical Dentistry

|September 28, 2019

Summary

This summary is machine-generated.

Bulk-fill resin composites significantly reduce restorative time for posterior teeth cavities compared to conventional resins. Full-body bulk-fill materials offer the greatest time savings, while flowable bulk-fill composites show no significant difference.

Keywords:

bulk-fill resin composite resin dental restoration permanent teeth restorative time

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Area of Science:

Dentistry
Dental Materials Science
Restorative Dentistry

Background:

Dental restorations using resin composites are common procedures.
Minimizing chair time is crucial for efficiency in dental practices.
Bulk-fill resin composites were developed as a potentially faster alternative to conventional layering techniques.

Purpose of the Study:

To systematically review and meta-analyze the restorative time for posterior teeth cavities filled with bulk-fill versus conventional resin composites.
To compare the efficiency of different types of bulk-fill materials (full-body and flowable) against conventional resins.

Main Methods:

A comprehensive literature search was conducted across multiple databases (PubMed/MEDLINE, Scopus, LILACS, BBO, Cochrane, ClinicalTrials, ReBEC).
Eligible studies comparing bulk-fill and conventional resins for class I or II posterior cavities, with restorative time as the outcome, were selected.
A meta-analysis was performed on the mean difference in restorative time using a random effects model.

Main Results:

Overall, bulk-fill resin composites demonstrated a significantly lower restorative time compared to conventional resins (P = .0007).
The subgroup analysis revealed that full-body bulk-fill composites significantly reduced restorative time (P < .00001).
No significant difference in restorative time was found between flowable bulk-fill resin composites and conventional resins (P = .08).

Conclusions:

Full-body bulk-fill resin composites are more time-efficient for restoring posterior teeth than conventional resin composites.
Flowable bulk-fill resin composites do not offer a significant restorative time advantage over conventional materials.
The findings support the use of full-body bulk-fill composites to reduce clinical chair time in restorative dentistry.