ClinicalTrials.gg
Status unknownNCT03186352PADUpdated Aug 4, 2017

Clinical Effect of Photoactivated Disinfection on Primary Root Carious Lesions After Partial Caries Removal

An interventional study of photoactivated disinfection in Primary Root Caries, sponsored by Medical University of Warsaw. Status unknown at 1 site in Poland. Open to participants aged 45 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2017-08-04.

Sponsored by Medical University of Warsaw · Not applicable, Interventional, and Supportive care

The sponsor has not verified this record recently (last verified Aug 2017), so the status shown — last known as Recruiting — may be out of date.
Phase
Not applicable
Study type
Interventional
Enrollment
15
Allocation
Not applicable
Ages
45 Years and older
Sex
All
01

Study summary

The problem of root caries has been increasing in last decades as the an average life expectancy is rising. Due to progress of medicine and dentistry humans also maintain natural dentition longer.

The aim of the study is to determine the effectiveness of photoactivated disinfection / photodynamic therapy / photodynamic antimicrobial therapy in elimination of cariogenic bacteria after manual root caries removal.

If proved to be effective in eliminating bacteria from prepared cavity PAD could be incorporated in the protocol of treatment of root cavities.

Read the detailed description

Elimination of cariogenic bacteria is to be determined in this study - Mutans streptococci, Lactobacillus spp. and Actinomyces spp.

After manual preparation of the cavity with an excavator and taking a sample for a microbial analysis with a rose bur on micro motor (size 014) the cavity undergoes the procedure of photodynamic disinfection:

  • application of photosensitizer 'Fotosan Agent' (CMS Dental, Denmark) for 5 minutes,
  • radiation with low power laser, wavelength 635 nm power 200mW 120 s. ('Lasotronix', DiodeLX model SMART)
  • rinsing with water and drying

After photodynamic disinfection another sample for microbial analysis is taken form the neighboring area to get the material for a comparison analysis.

Filling the cavity with a material for permanent fillings (glass-ionomer cement)

Samples are inoculated on:

  • Mitis-Salivarius ('Difco') for Streptococci
  • Rogosa SL 2% aqar ('Oxoid') for Lactobacillus
  • Columbia with blood for Actinomyces (2 dilutions - 1:10 and 1:100)
02

Conditions studied

  • Primary Root Caries

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Keywords

  • photodynamic therapy
  • photoactivated disinfection
  • primary root caries lesion
  • cavity disinfection
  • lasers
  • root caries
03

In context

Root Caries

39 studies on the registry are indexed under Root Caries; 14 are open to participants now.

This study's planned enrollment of 15 is below the median of 62 across 35 interventional studies indexed under Root Caries.

Browse Root Caries studies →

Lead sponsor

Medical University of Warsaw is the lead sponsor of 326 studies on the registry; 87 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
45 Years and older
Sexes eligible
All
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • more than 10 teeth
  • at least one tooth with primary caries lesion with non-invasive treatment (lesion which needs to be prepared and filled with material for permanent fillings); tooth with no clinical and/or radiological symptoms of pulp involvement.
  • no systemic disease

Exclusion criteria

Exclusion Criteria:

  • systemic diseases (may affect saliva flow and properties)
  • antibiotic therapy in previous 3 months before the appointment
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

05

Study design

Phase
Not applicable
Primary purpose
Supportive care
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
15 participants (estimated)

Study arms

  • Experimental
    after intervention

    sample for microbial analysis it taken with sterile a rose bur (size 014) on micro motor after intervention

    Procedure: photoactivated disinfection

Interventions

  • Procedurephotoactivated disinfection

    After manual preparation of the cavity with an excavator and taking a sample for a microbial analysis with a rose bur on micro motor (size 014) the cavity undergoes the procedure of photodynamic disinfection: application of photosensitizer 'Fotosan' Agent (CMS Dental, Denmark) for 5 minutes, radiation with low power laser, wavelength 635 nm power 200mW 120 s. ('Lasotronix', DiodeLX model SMART) rinsing with water and drying

    Also known as: Photodynamic therapy, photodynamic antimicrobial chemotherapy

06

What researchers measure

Primary outcomes

  1. elimination of bacteria

    determination of amount of Colony Forming Units per ml

    Time frame: 7 day

07

Study locations

1 of 1 sites recruiting
  • Zakład Stomatologii Zachowawczej
    Warsaw, Woj. Mazowieckie 26-610, Poland
    Recruiting
08

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Started Jul 2017 (actual). Primary completion is estimated for Dec 2017, 5 months after the start.

Of 21 interventional studies with no phase under Root Caries, half reached primary completion within 30 months of starting (the median), counting those still running; a quarter within 23 and three quarters within 55. This study's planned 5 months is below that.

How these figures are worked out, and which studies are left out of them.

Registered
Jun 12, 2017
First posted
Jun 14, 2017
StartActual
Jul 11, 2017
Primary completionEst.
Dec 31, 2017
CompletionEst.
Feb 28, 2018
Last update
Aug 4, 2017
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Aug 4, 2017, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT03186352
Responsible party
Sponsor
First posted
Jun 14, 2017
Start date
Jul 11, 2017
Primary completion
Dec 31, 2017 (estimated)
Completion
Feb 28, 2018 (estimated)
Last update
Aug 4, 2017

Study contacts

Tomasz A Gajewski
Contact
tomekgajewski88@gmail.com
530404844

Oversight

FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is status unknown, as verified in Aug 2017. You cannot join it, but the record below documents what was studied.

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