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J Clin Periodontol. 2019 Feb;46(2):218-230. doi: 10.1111/jcpe.13041. Epub 2019 Jan 28.

Time between recall visits and residual probing depths predict long-term stability in patients enrolled in supportive periodontal therapy.

Author information

1
Department of Periodontology, School of Dental Medicine, University of Bern, Bern, Switzerland.
2
Department of Periodontology, Endodontology and Cariology, School of Dental Medicine, University of Basel, Basel, Switzerland.
3
Significantis GmbH, Bern, Switzerland.

Abstract

AIM:

To relate the time between recall visits and residual periodontal probing depths (PPDs) to periodontal stability in patients enrolled in supportive periodontal therapy (SPT).

MATERIALS AND METHODS:

Retrospective data on residual PPDs from 11,842 SPT visits were evaluated in SPT patients at the Medi School of Dental Hygiene (MSDH), Bern, Switzerland, 1985-2011. A residual PPD-based algorithm was developed to compute SPT intervals with no expected change of residual PPD.

RESULTS:

A total of 883 patients aged 43.9 (±13.0) years and 55.4% (n = 489) being females were identified. Linear mixed model analysis yielded highest statistically significant impact on PPD change with time between SPT visits, presence of residual PPD ≥4 mm, and bleeding on probing (p < 0.0001). Patients returning for SPT five times consecutively earlier than computed presented mean % PPDs ≥4 mm of 5.8% (±3.9) compared with patients returning later (19.2%, ±7.6) (p < 0.0001). Additionally, patients attending >50% of their SPT visits earlier versus later demonstrated increased periodontal stability after 5 years (p = 0.0002) and a reduced frequency of tooth loss (0.60, ±0.93 versus 1.45, ±2.07) after 20 years (p < 0.0001).

CONCLUSIONS:

To reach and maintain periodontal stability during SPT, individual quantitative data from comprehensive residual PPD profiles may contribute to the improved planning of SPT intervals.

KEYWORDS:

recall interval; residual probing depths; supportive periodontal therapy

PMID:
30499586
DOI:
10.1111/jcpe.13041

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