An interventional study of Phase I Periodontal Therapy in Generalized Gingivitis and Tobacco Use, Cigarette Use, sponsored by Cyprus Health and Social Sciences University. Not yet recruiting at 1 site in Cyprus. Open to participants aged 18 Years to 35 Years. Per ClinicalTrials.gov, last updated 2026-11-12.
Sponsored by Cyprus Health and Social Sciences University · Not applicable, Interventional, and Treatment
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This prospective, comparative clinical study aims to evaluate the periodontal status and response to Phase I periodontal therapy among conventional cigarette smokers, heated tobacco product users, dual users of conventional cigarettes and heated tobacco products, and non-smokers.
The study includes systemically healthy individuals aged 18-35 years diagnosed with generalized gingivitis. Participants are categorized into four groups according to their existing tobacco use habits.
Periodontal assessments include full-mouth plaque score (FMPS), bleeding on probing (BOP), probing pocket depth (PPD), and clinical attachment level (CAL). All participants receive conventional Phase I periodontal therapy and standardized oral hygiene instructions as part of routine periodontal care.
Clinical periodontal parameters are evaluated at baseline and at one and three months following treatment. The study aims to compare periodontal outcomes and changes over time among the four tobacco use groups.
421 studies on the registry are indexed under Tobacco Use; 83 are open to participants now.
This study's planned enrollment of 140 is above the median of 127 across 352 interventional studies indexed under Tobacco Use.
Browse Tobacco Use studies →Cyprus Health and Social Sciences University is the lead sponsor of 5 studies on the registry; 1 is open to participants now.
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Individuals aged 18-35 years.
Systemically healthy individuals.
Individuals diagnosed with generalized gingivitis.
Individuals belonging to one of the following four groups:
Conventional cigarette smokers.
Heated tobacco product (HTP) users.
Dual users of conventional cigarettes and heated tobacco products.
Non-users of tobacco products.
Individuals who voluntarily agree to participate in the study and provide written .
Exclusion Criteria:
Individuals with a current or previous diagnosis of periodontitis.
Individuals currently undergoing orthodontic treatment.
Individuals using medications that may affect periodontal health.
Individuals who have used antibiotics within the previous 3 months.
Pregnant or breastfeeding individuals.
Individuals who have received periodontal treatment within the previous 6 months.
Individuals with current alcohol dependence.
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.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Participants aged 18-35 years diagnosed with generalized gingivitis receive Phase I periodontal therapy and standardized oral hygiene instructions. Participants are categorized into four subgroups according to their pre-existing tobacco use status: conventional cigarette smokers, heated tobacco product users, dual users, and non-smokers. Periodontal parameters, including full-mouth plaque score (FMPS), bleeding on probing (BOP), probing pocket depth (PPD), and clinical attachment level (CAL), are assessed at baseline and at 1 and 3 months following treatment.
Procedure: Phase I Periodontal Therapy
All participants diagnosed with generalized gingivitis will receive conventional non-surgical Phase I periodontal therapy, including professional scaling and standardized oral hygiene instructions. Participants will be assessed at baseline and at one and three months following treatment. Periodontal treatment outcomes will be evaluated using full-mouth plaque score (FMPS), bleeding on probing (BOP), probing pocket depth (PPD), and clinical attachment level (CAL). The same treatment approach will be applied across all four tobacco use groups.
Change in Full-Mouth Plaque Score (FMPS)
Full-mouth plaque score (FMPS) will be assessed using the O'Leary plaque control record. The presence or absence of dental plaque will be recorded at four surfaces per tooth without a disclosing agent. FMPS will be expressed as the percentage of plaque-positive surfaces. Changes in FMPS following Phase I periodontal therapy will be compared among the four tobacco use groups.
Time frame: Baseline, 1 month, and 3 months after treatment
Change in Bleeding on Probing (BOP)
Bleeding on probing (BOP) will be assessed using the Ainamo and Bay Gingival Bleeding Index. Bleeding will be recorded dichotomously as present (1) or absent (0) following gentle periodontal probing. BOP will be expressed as the percentage of bleeding-positive sites. Changes in BOP following Phase I periodontal therapy will be compared among conventional cigarette smokers, heated tobacco product users, dual users, and non-smokers.
Time frame: Baseline, 1 month, and 3 months after treatment
Change in Probing Pocket Depth (PPD)
Probing pocket depth (PPD) will be measured in millimeters using a UNC-15 periodontal probe at six sites per tooth (mesiobuccal, midbuccal, distobuccal, mesiolingual, midlingual, and distolingual). PPD is defined as the distance from the gingival margin to the base of the gingival sulcus or periodontal pocket. Changes in PPD following Phase I periodontal therapy will be evaluated at baseline, one month, and three months and compared among the four tobacco use groups.
Time frame: Baseline, 1 month, and 3 months after treatment
Change in Clinical Attachment Level (CAL)
Clinical attachment level (CAL) will be measured in millimeters using a UNC-15 periodontal probe at six sites per tooth (mesiobuccal, midbuccal, distobuccal, mesiolingual, midlingual, and distolingual). CAL is defined as the distance from the cementoenamel junction (CEJ) to the base of the gingival sulcus or periodontal pocket. Changes in CAL following Phase I periodontal therapy will be assessed at baseline, one month, and three months and compared among the four tobacco use groups.
Time frame: Baseline, 1 month, and 3 months after treatment
Plan to share: Undecided — The individual participant data (IPD) sharing plan has not yet been finalized. The possibility of sharing de-identified data will be evaluated in accordance with ethical approval, participant consent, and applicable data protection requirements.
Start is estimated for Nov 2026; primary completion for Aug 2027, 9 months later.
Of 167 non-industry interventional studies with no phase under Tobacco Use, half reached primary completion within 24 months of starting (the median), counting those still running; a quarter within 12 and three quarters within 41. This study's planned 9 months is below that.
Counting every sponsor, half of 223 studies reached it within 16 months; a quarter within 5 and three quarters within 33.
How these figures are worked out, and which studies are left out of them.
From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗
This study is not yet recruiting, as verified in Nov 2026. You cannot join it, but the record below documents what was studied.
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Cyprus Health and Social Sciences University