Probiotics in Special Needs Patients at High Risk for Tooth Decay: a Randomized Controlled Trial.

September 30, 2023 updated by: Prof. Marco Dolci, G. d'Annunzio University

The goal of this randomized clinical trial is to test the effect orally administration of Probiotics based on Lactobacillus rhamnosus LR04 and Lactobacillus plantarum LP14 as adjuvant in caries prevention in subjects who can not properly perform oral hygiene procedures. The main questions it aims to answer are:

  • QUESTION 1: orally administered probiotics based on the previous strains could represent a useful tool in support of special needs patients in tooth decay prevention?
  • QUESTION 2: orally administered probiotics based on the previous strains could ameliorate salivary pH management?

Partecipants in the test group will take the test probiotic for 90 days in adjunction of the routinary oral hygiene procedures.

Partecipants in the positive controlled group will take the placebo for 90 days in adjunction of the routinary oral hygiene procedures.

Partecipants in the negative control group will perform only the routinary oral hygiene procedures.

Researchers will compare 3 groups to see if orally administered probiotics based on L. rhamnosus and L. plantarum may help in the management of clinical status and salivary pH levels.

Study Overview

Status

Not yet recruiting

Conditions

Intervention / Treatment

Detailed Description

Recent literature has highlighted how patients' oral health is closely linked to the presence of intellectual and developmental disabilities (IDD). It has in fact been found that in patients with IDD the level of oral health tends to be lower than in subjects without IDD, and how this has an influence on the general state of health. A key role appears to be played by caregivers, who carry out the delicate task of maintaining an adequate level of oral hygiene. Among various aspects, daily oral hygiene maneuvers were considered as a key intervention in maintaining good health. In this regard, it is worth remembering that a study conducted in 1990 on caregivers demonstrated how, despite knowing the characteristics of the healthy appearance of the tissues supporting the dental elements, not everyone knew how this was closely related to the oral hygiene. Likewise, the study by Kilian and collaborators demonstrated how the maintenance of an oral microbiota that promotes oral health is not only desirable, but also possible. Given that the implementation of correct home hygiene represents a cornerstone in the management of general well-being, we decided to evaluate whether a formulation that allows the strengthening of bacterial populations competitive with respect to cariogenic populations could be significantly useful for the maintenance of these patients.

Inclusion criteria: adult and minor special needs patients belonging to the University Dental Clinic of Chieti. Presence of motor and/or cognitive difficulties in carrying out oral hygiene maneuvers at home.

Exclusion criteria: special needs patients with effective home hygiene.

Minimum sample size: Calculation of sample size (Alpha = 0.05; Power = 95%) for 3 independent study groups, and a continuous primary endpoint.

Sample size = Z2 (1-alpha/2) p (1-p) / d2 Where Z(1-alpha/2) is the standard variate corresponding to 1.96 at 5% type 1 error, p is the expected proportion in the population expressed in decimals based on previous studies and d is the confidence level decided by the researcher expressed in decimal. 20 patients are required per group, for a total of 60 patients. To these patients, the dropout percentage of 10% must be added, so the total is 70 patients.

BASELINE - T0. Signature of informed consent. Completion of a specific questionnaire regarding consumption of simple sugars and initial home oral hygiene procedures. Oral cavity inspection with registration of gingivitis according to dichotomous qualitative indices by quadrants.Recording of specific parameters: Salivary pH via GEASS® pH meter. DMFT (Decayed Missing Filled Teeth).

Random placement of the patient in the test, positive or negative control group.

TEST: instruction of the subject and/or caregiver in home oral hygiene 2/day + oeally administred probiotic based on L. plantarum and L. rhamnosus for 90 days.

POSITIVE CONTROL: instruction of the subject and/or caregiver in home oral hygiene 2/day + orally administred placebo.

NEGATIVE CONTROL: instruction of the subject and/or caregiver for home oral hygiene procedures 2/day.

T1 - AFTER 3 MONTHS FROM T0. Oral cavity inspection with recording of gingivitis according to dichotomous qualitative indices by quadrants. Recording of pH and DMFT.

Randomization. The treatment that is due to the individual patient is kept in sequentially numbered, opaque and sealed envelopes (SNOSE Sequentially Numbered, Opaque, Sealed Envelopes). The products used for both the test and the controls will be supplied in anonymous tubes so that neither the patient nor the investigator will be aware of them.

Statistical analysis: Developed by trusted bioinformatics group.

Study Type

Interventional

Enrollment (Estimated)

70

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact Backup

Study Locations

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • individuals with intellectual disability in presence of gingivitis in 1 quadrant at least and 1 decayed tooth at least, and improper oral hygiene routine.

Exclusion Criteria:

  • individuals without intellectual disability or with the condition in absence of gingivitis, decayed teeth and improper oral hygiene routine.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Quadruple

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Test Group
Subjects who will receive orally administred probiotics based on L. rhamnosus and L. plantarum for 90 days in adjunction to the instruction of their care-giver regarding oral hygiene procedures.
Other: Test Group
Subjects will receive orally administred probiotics based on L. plantarum and L. rhamnosus for 90 days
Active Comparator: Positive Control
Subjects who will receive orally administred probiotics based on placebo for 90 days in adjunction to the instruction of their care-giver regarding oral hygiene procedures.
Other: Positive Control
Subjects will receive orally administred probiotics based on placebo 90 days
Other: Negative Control
Subjects who will receive esclusively the instruction of their care-giver regarding oral hygiene procedures.
Other: Negative Control
Subjects will receive esclusively instruction to perform oral hygiene procedures properly.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Reduction of clinical dicotomic indexes for gingivitis
Time Frame: From enrollement to the end of treatment at 3 months.
Gingivitis will be recorded for each quadrant as present/absent taking into account the classical flogistic signs.
From enrollement to the end of treatment at 3 months.

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
management of salivary pH
Time Frame: From enrollement to the end of treatment at 3 months.
Salivary pH will be recorded via digital pHmeter 3/times for each time-point in order to minimaze the error of registration.
From enrollement to the end of treatment at 3 months.

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

G. d'Annunzio University

Investigators

  • Principal Investigator: Marco Dolci, MD DDS PHD, University G. d'Annunzio of Chieti

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

October 1, 2023

Primary Completion (Estimated)

March 1, 2024

Study Completion (Estimated)

May 1, 2024

Study Registration Dates

First Submitted

September 26, 2023

First Submitted That Met QC Criteria

September 26, 2023

First Posted (Actual)

October 2, 2023

Study Record Updates

Last Update Posted (Actual)

October 4, 2023

Last Update Submitted That Met QC Criteria

September 30, 2023

Last Verified

September 1, 2023

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • CARIES

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

IPD Plan Description

A decision regarding IPD sharing has not been made yet because a dedicated website is not available at the momente.

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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