The goal of this clinical trial is to Investigate the clinical and microbiological efficacies of Laser disinfection and ICG-mediated aPDT as adjunct to RSD for patients with periodontitis. The main question it aims to answer is: Does the use of laser disinfection or ICG-mediated aPDT as adjunct to RSD are effective in improving clinical parameters and reducing the load of periodontal pathogens. Participants will undergo full-mouth supragingival debridement by using ultrasonic device at baseline. All patients will be instructed to brush their teeth twice daily and will be supplied with the same type of tooth paste and toothbrush, with suitable interdental aids. All the patients will be instructed to attend again after 7 days. One week later, sites randomly allocated to control (Ctrl) group and test groups which will receive, in addition to RSD, either aPDT or periodontal pocket disinfection (Biolase). For all groups, sites with initial PPD 4-6 mm will be treated with RSD using area specific (Graecy) curettes.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Enrollment
18
In test group 1, the diode Laser will be used to disinfect the inner layer of the pockets and thus reducing the microbial load. Diode laser (Biolase, EpicX, BIOLASE, Inc, USA) settings will be as follows: wavelength: 940nm; power: 1W; 300μm uninitiated fibers; continuous radiation mode; and energy level: 80 J/s. The laser fibers then will be inserted into the pockets in such a way that they will be in contact with the soft tissue wall of the pockets and parallel to the root surface and then will be moved to the apical surface through a horizontal sweeping motion (1mm/s) while remaining in contact with the soft tissue wall of the pockets.
the second test group will receive additional adjunctive aPDT using a ICG photosensitizer activated with diode laser. In details, pockets will be irrigated by a syringe loaded with an ICG photosensitizer solution (Verdye, Diagnostic green, Germany) at a concentration of 5mg/ml. The ICG solution will be allowed to stay in the pockets for 2min, and washing out excess solution from the pockets before laser irradiation. Afterwards, a 300μm bulb optical fibre of the 810nm diode laser unit (QuickLase, United Kingdom) set at 300mw in pulsed mode (100ms ON/100ms OFF) will be inserted along the pocket and activated for 30s with continuous vertical movements from the bottom of the pocket to the gingival margin
For all groups, sites with initial PPD 4-6 mm will be treated with RSD using area specific (Graecy) curettes.
College of Dentistry, University of Baghdad
Baghdad, Iraq
RECRUITINGProbing Pocket Depth (PPD)
PPD will be measured from the gingival margin to the base of the pocket using UNC-15 periodontal probe and the measurements in millimetre .
Time frame: over a period of 3 months.
Bleeding on probing (BOP)
The BOP will be scored as 0 (absent) and 1 (present) after probing within 30s by quadrant using UNC-15 periodontal probe .
Time frame: over a period of 3 months.
Plaque index (PI)
Biofilm will be determined using a dichotomous scoring system as presence (1) or absence (0). Disclosing solution will be used to assess agreement on scoring of biofilm.
Time frame: over a period of 3 months.
Clinical attachment loss (CAL)
CAL will be measured from the cementoenamel junction to the base of the pocket using UNC-15 periodontal probe and the measurements in millimetre .
Time frame: over a period of 3 months.
Change in bacterial load of F. nucleatum and Fretibacterium fastidiosum
Real time PCR will be used to assess the detection of the following periodontal pathogens in the subgingival biofilm samples: F. nucleatum and F. fastidiosum, according to manufacturer's instructions. Identification of target bacteria through PCR will be executed using species specific primers.
Time frame: over a period of 3 months.
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