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Effect of interdental brush design on plaque during nonsurgical periodontal therapy

Abstract

Objective

The aim of this randomized controlled trial was to evaluate the interproximal cleaning efficacy of waist-shaped compared with straight soft interdental brushes in patients undergoing nonsurgical periodontal therapy.

Materials and methods

Ten patients diagnosed with periodontitis stage II or III were scheduled for nonsurgical periodontal therapy. Baseline plaque control record (PCR), modified approximal plaque index (API), papillary bleeding index (PBI), probing pocket depth (PPD), and bleeding on probing (BOP) were evaluated. Four interdental spaces of equal sizes were determined, and baseline plaque indices (PI) were assessed on eight surfaces of the respective adjacent teeth, resulting in 640 measuring positions. Interdental brushes with a straight or waist-shaped design were randomly allocated to the right or left side, and patients received oral hygiene instructions. Follow-up measurements including PCR, API, PBI, and site-specific PI were performed during initial nonsurgical periodontal therapy sessions and reevaluation which was undertaken 8 weeks afterwards.

Results

PCR, API, and PBI decreased significantly compared with baseline at each time point (p < 0.001).

PPD (waist-shaped, baseline 4 mm (range, 2–9 mm) vs. reevaluation 3 mm (range, 1–6 mm); p < 0.001; straight, baseline 4 mm (range, 2–10) vs. reevaluation 3 mm (range, 1–6) mm; p < 0.001) and BOP (p = 0.008) showed significant reduction in both groups. Sub-analysis of site-specific areas including line angles and interproximal areas revealed no significant reduction of plaque during the observation period between both brush designs. No difference between straight and waist-shaped brushes regarding PPD or BOP decrease was found.

Conclusion

The efficacy of both interdental brush designs concerning plaque control in patients undergoing nonsurgical periodontal therapy was similar.

Clinical relevance

The use of interdental brushes is essential for biofilm removal in patients during initial periodontal therapy, regardless of brush design.

Clinical trial registration

ISRCTNregistry (#ISRCTN24498365), http://www.isrctn.com/ISRCTN24498365

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Acknowledgments

This study was supported by Topcaredent®, Zurich, Switzerland (provision of waist-shaped interdental brushes).

Funding

This study was supported by the Medical University of Vienna.

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Corresponding author

Correspondence to Hady Haririan.

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Conflict of interest

The authors declare that they have no conflicts of interest.

Ethical approval

All procedures performed in studies involving human participants were approved by the Ethics Committee of the Medical University of Vienna (Nr. 1670/2016) and in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

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Prior to inclusion, informed consent was obtained from all individual participants.

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Wehner, C., Husejnagic, S., Laky, B. et al. Effect of interdental brush design on plaque during nonsurgical periodontal therapy. Clin Oral Invest 25, 87–94 (2021). https://doi.org/10.1007/s00784-020-03337-x

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  • DOI: https://doi.org/10.1007/s00784-020-03337-x

Keywords

  • Oral hygiene
  • Dental plaque
  • Periodontitis
  • Periodontal debridement
  • Dental plaque index