1. Examining the impact of oral hygiene advice and/or scale and polish on periodontal disease: the IQuaD cluster factorial randomised controlled trial
- Author
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Lorna E. Macpherson, Linda Young, Peter A. Heasman, John Norrie, Jan E Clarkson, Thomas Lamont, Beatriz Goulao, Marjon van der Pol, Giles McCracken, Anne Duncan, Craig R Ramsay, Dwayne Boyers, and Helen V Worthington
- Subjects
Adult ,medicine.medical_specialty ,Cost-Benefit Analysis ,Bleeding on probing ,Population ,Psychological intervention ,MEDLINE ,Disease cluster ,Oral hygiene ,law.invention ,03 medical and health sciences ,0302 clinical medicine ,Randomized controlled trial ,law ,medicine ,Humans ,030212 general & internal medicine ,education ,General Dentistry ,Periodontal Diseases ,education.field_of_study ,business.industry ,Research ,030206 dentistry ,Oral Hygiene ,Self Efficacy ,Scale (social sciences) ,Physical therapy ,Poland ,medicine.symptom ,Gingival Hemorrhage ,business - Abstract
Objective To compare the clinical effectiveness and cost benefit of different frequencies of scale and polish (S&P) treatments in combination with different types of oral hygiene advice (OHA). Design Multi-centre, multi-level cluster randomised factorial open trial with blinded outcome evaluation. UK dental practices were cluster randomised to deliver OHA as usual or personalised. In a separate randomisation, patients were allocated to receive S&P 6-monthly, 12-monthly or never. Setting UK primary dental care. Participants Practices providing NHS care and adults who had received regular dental check-ups. Main outcome measures The percent of sites with bleeding on probing, patient confidence in self-care, incremental net benefits (INB) over three years. Results Sixty-three practices and 1,877 adult patients were randomised and 1,327 analysed (clinical outcome). There was no statistically significant or clinically important difference in gingival bleeding between the three S&P groups (for example, six-monthly versus none: difference 0.87% sites, 95% CI: 1.6 to 3.3, p = 0.48) or between personalised or usual OHA groups (difference -2.5% sites, -95%CI: -8.3 to 3.3, p = 0.39), or oral hygiene self-efficacy (cognitive impact) between either group (for example, six-monthly versus none: difference -0.028, 95% CI -0.119 to 0.063, p = 0.543). The general population place a high value on, and are willing to pay for, S&P services. However, from a dental health perspective, none of the interventions were cost-effective. Conclusion Results suggest S&P treatments and delivering brief personalised OHA provide no clinical benefit and are therefore an inefficient approach to improving dental health (38% of sites were bleeding whatever intervention was received). However, the general population value both interventions. Zusatzmaterial online: Zu diesem Beitrag sind unter 10.1038/s41415-021-2662-3 für autorisierte Leser zusätzliche Dateien abrufbar., Key points Describes the process of successfully delivering a multi-centre, cluster randomised factorial open trial in general dental practice in the NHS, for the most frequently provided dental treatment, scale and polish (S&P), and oral hygiene advice.Highlights the clinical, economic and patient-centred outcomes from providing S&P at different time intervals alongside personalised or routine oral hygiene advice to over 2,000 participants for three years.Evidence from IQuaD concludes that there was no difference in gingival bleeding across trial arms at three years; however, the general population are willing to pay for and place a high value on both S&P and personalised oral hygiene advice. Zusatzmaterial online: Zu diesem Beitrag sind unter 10.1038/s41415-021-2662-3 für autorisierte Leser zusätzliche Dateien abrufbar.
- Published
- 2021
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