Influence of successful periodontal intervention on renal disease

ISRCTN ISRCTN10227738
DOI https://doi.org/10.1186/ISRCTN10227738
Secondary identifying numbers 18458
Submission date
22/04/2015
Registration date
23/04/2015
Last edited
07/03/2023
Recruitment status
No longer recruiting
Overall study status
Completed
Condition category
Oral Health
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data
Record updated in last year

Plain English Summary

Background and study aims
Patients with chronic kidney disease (CKD) may also have a common, bacterial inflammatory condition affecting the gums (periodontitis). The effects of periodontitis are not limited to the mouth but spread to other sites in the body via bleeding gums during eating, talking or brushing. Periodontitis is easily treatable using a mix of professional cleaning by a dentist or hygienist and improved homecare on the part of the patient. In an ongoing study being carried out in Birmingham, we have found that periodontitis might have a deleterious effect on the general health of patients with CKD. Given that periodontitis is readily treatable and that the treatment of periodontitis may have a beneficial effect on patients, the aim of this study is to test the practicality of conducting a larger-scale study to investigate the effect of treating periodontitis on the general health of patients with CKD.

Who can participate?
Patients aged 18 and over with periodontitis. To be included in group 1 (see below) the patients also have to have CKD.

What does the study involve?
Patients with CKD and periodontitis are randomly allocated into one of two groups. Those in group 1 receive intensive treatment for their periodontitis at the Birmingham Dental Hospital. The effects of this treatment on the general health of patients with CKD are assessed by comparing these patients to patients randomly assigned to the other group who receive this intensive treatment but after a delay of 12 months. All patients are followed up for 18 months.

What are the possible benefits and risks of participating?
Not provided at time of registration

Where is the study run from?
Birmingham Dental Hospital (UK)

When is the study starting and how long is it expected to run for?
January 2015 to April 2024

Who is funding the study?
1. Kidney Disease UK
2. National Institute for Health Research (UK)

Who is the main contact?
Mr Praveen Sharma

Contact information

Mr Praveen Sharma
Scientific

Birmingham Dental Hospital
St Chad's Queensway
Birmingham
B4 6NN
United Kingdom

ORCiD logoORCID ID 0000-0001-6435-4842

Study information

Study designRandomised; Interventional; Design type: Treatment
Primary study designInterventional
Secondary study designRandomised controlled trial
Study setting(s)Hospital
Study typeTreatment
Participant information sheet Not available in web format, please use the contact details to request a participant information sheet
Scientific titleInfluence of successful periodontal intervention on renal and vascular systems in patients with chronic kidney disease: a pilot interventional randomised controlled trial
Study acronymINSPIRED
Study hypothesisThe overarching research question which this pilot will contribute to answering is: In patients with Chronic Kidney Disease (CKD) and periodontitis, does the intensive treatment of periodontitis and maintenance of periodontal health, compared with the current, community-care standard of periodontal therapy, have an impact upon renal and cardiovascular health?
Ethics approval(s)West Midlands – The Black Country Research Ethics Committee, 08/01/2015, ref: 15/WM/0006
ConditionTopic: Oral and dental health, Renal disorders; Subtopic: Renal disorders, Oral and dental public health; Disease: All Oral and dental health, All Renal disorders
InterventionIntensive periodontal treatment, oral hygiene instructions, supra and sub gingival scaling and non-surgical root surface debridement followed by periodontal maintenance therapy
Study Entry : Registration and One or More Randomisations
Intervention typeProcedure/Surgery
Primary outcome measureAs this is a pilot study, the primary objective will be informing a definitive trial to follow. The feasibility/pilot objectives include:
1. Investigating the integrity of the study protocol
2. Insight into likely recruitment rates and barriers to recruitment
3. Testing delivery of patient questionnaires and the randomisation process
4. Assessing the acceptability of the intervention
5. Collection of pilot data on effect size and variability
6. Selection of suitable primary and secondary outcomes (from the outcomes of interest listed below) and subsequent sample size calculation for a pivotal trial.
The outcomes of interest include:
1. Measures of renal function
2. Measures of cardiovascular function
3. Measures of periodontal health
4. Patient-centred outcomes
Secondary outcome measuresNo secondary outcome measures
Overall study start date01/01/2015
Overall study end date30/04/2024

Eligibility

Participant type(s)Patient
Age groupAdult
Lower age limit18 Years
SexBoth
Target number of participantsPlanned Sample Size: 140; UK Sample Size: 140
Total final enrolment77
Participant inclusion criteriaInclusion criteria for all participants:
1. Patient aged ≥18 years and
2. Be able to provide consent to participate in the trial

Additional inclusion criteria for patients with CKD and periodontitis:
1. Secondary care renal follow up for at least 1 year prior to recruitment
2. Decline of eGFR of 5mls/min/year or 10mls/min/5years
3. And/or an Albumin Creatinine Ratio (ACR )>70mmol/l on three occasions
4. And/or CKD 4 or 5 (pre-dialysis)
5. And generalised moderate-severe periodontitis defined as a minimum cumulative probing depth of 30mm (excluding probing depths <5mm)

Additional inclusion criteria for systemically healthy patients with periodontitis:
1. Generalised moderate-severe periodontitis defined as a minimum cumulative probing depth of 30mm (excluding probing depths <5mm)
Participant exclusion criteriaExclusion criteria for all participants:
1. Not meeting the inclusion criteria
2. Unable to provide informed consent

Additional exclusion criteria for patients with CKD and periodontitis:
1. Requiring Renal Replacement Therapy (dialysis/transplant)
2. Immunosuppression
3. Received specialist periodontal treatment in the past 1 year
4. Not amenable to periodontal treatment e.g. severe bleeding disorders that contraindicate periodontal treatment

Additional exclusion criteria for systemically healthy patients with periodontitis:
1. Any self-reported systemic illness eg hypertension or diabetes
2. Received specialist periodontal treatment in the past 1 year
3. Not amenable to periodontal treatment e.g. severe bleeding disorders that contraindicate periodontal treatment

Additional exclusion criteria for systemically healthy patients without periodontitis:
1. Any self-reported systemic illness eg hypertension or diabetes
2. Periodontitis defined as probing depth of >4mm at any site
Recruitment start date26/02/2015
Recruitment end date30/04/2018

Locations

Countries of recruitment

  • England
  • United Kingdom

Study participating centre

Birmingham Dental Hospital
School Of Dentistry
St Chad's Queensway
Birmingham
B4 6NN
United Kingdom

Sponsor information

University of Birmingham
University/education

Edgbaston
Birmingham
B4 6NN
England
United Kingdom

Website http://www.birmingham.ac.uk/
ROR logo "ROR" https://ror.org/03angcq70

Funders

Funder type

Government

Kidney Research UK
Private sector organisation / Other non-profit organizations
Location
United Kingdom
National Institute for Health Research
Government organisation / National government
Alternative name(s)
National Institute for Health Research, NIHR Research, NIHRresearch, NIHR - National Institute for Health Research, NIHR (The National Institute for Health and Care Research), NIHR
Location
United Kingdom

Results and Publications

Intention to publish date30/04/2024
Individual participant data (IPD) Intention to shareNo
IPD sharing plan summaryNot expected to be made available
Publication and dissemination planPublication of the methodology in a peer reviewed journal.
IPD sharing planThere are currently no plans to share pseudoanonymised IPD.

Study outputs

Output type Details Date created Date added Peer reviewed? Patient-facing?
Protocol article protocol 13/11/2017 Yes No
HRA research summary 28/06/2023 No No

Editorial Notes

07/03/2023: The overall trial end date was changed from 30/04/2022 to 30/04/2024.
14/05/2021: The following changes have been made:
1. The overall trial end date has been changed from 01/04/2019 to 30/04/2022.
2. The final enrolment number has been added.
3. The intention to publish date has been changed from 01/12/2015 to 30/04/2024.
4. The IPD sharing statement has been added.
15/11/2017: Publication reference added.
02/08/2016: The recruitment end date has been updated from 30/04/2016 to 30/04/2018 and the overall trial end date has been updated from 01/04/2018 to 30/04/2019.
17/08/2015: The recruitment end date was changed from 26/10/2015 to 30/04/2016.