<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE trials [
<!ELEMENT trials (trial+)>

<!ELEMENT trial (main,contacts,countries,criteria,health_condition_code,health_condition_keyword,intervention_code,
          intervention_keyword,primary_outcome,secondary_outcome,secondary_sponsor,secondary_ids,source_support,ethics_reviews)>

<!ELEMENT main (trial_id,utrn?,reg_name,date_registration,primary_sponsor,public_title,acronym?,scientific_title,scientific_acronym?,
          date_enrolment,type_enrolment,target_size,recruitment_status,url?,study_type,study_design,phase,hc_freetext?,i_freetext?,results_actual_enrolment,results_date_completed,results_url_link,results_summary,           results_date_posted,results_date_first_publication,results_baseline_char,results_participant_flow,results_adverse_events,results_outcome_measures,results_url_protocol,results_IPD_plan, results_IPD_description)>
<!ELEMENT trial_id (#PCDATA)>
<!ELEMENT utrn (#PCDATA)>
<!ELEMENT reg_name (#PCDATA)>
<!ELEMENT date_registration (#PCDATA)><!-- dd/mm/yyyy -->
<!ELEMENT primary_sponsor (#PCDATA)>
<!ELEMENT public_title (#PCDATA)>
<!ELEMENT acronym (#PCDATA)>
<!ELEMENT scientific_title (#PCDATA)>
<!ELEMENT scientific_acronym (#PCDATA)>
<!ELEMENT date_enrolment (#PCDATA)><!-- dd/mm/yyyy -->
<!ELEMENT type_enrolment (#PCDATA)>
<!ELEMENT target_size (#PCDATA)>
<!ELEMENT recruitment_status (#PCDATA)><!-- Pending,Recruiting,Suspended,Complete,Other -->
<!ELEMENT url (#PCDATA)>
<!ELEMENT study_type (#PCDATA)><!-- interventional,observational -->
<!ELEMENT study_design (#PCDATA)>
<!ELEMENT phase (#PCDATA)>
<!ELEMENT hc_freetext (#PCDATA)>
<!ELEMENT i_freetext (#PCDATA)>
<!ELEMENT results_actual_enrolment (#PCDATA)>
<!ELEMENT results_date_completed (#PCDATA)><!-- dd/mm/yyyy -->
<!ELEMENT results_url_link (#PCDATA)>
<!ELEMENT results_summary (#PCDATA)>
<!ELEMENT results_date_posted (#PCDATA)><!-- dd/mm/yyyy -->
<!ELEMENT results_date_first_publication (#PCDATA)><!-- dd/mm/yyyy -->
<!ELEMENT results_baseline_char (#PCDATA)>
<!ELEMENT results_participant_flow (#PCDATA)>
<!ELEMENT results_adverse_events (#PCDATA)>
<!ELEMENT results_outcome_measures (#PCDATA)>
<!ELEMENT results_url_protocol (#PCDATA)>
<!ELEMENT results_IPD_plan (#PCDATA)>
<!ELEMENT results_IPD_description (#PCDATA)>


<!ELEMENT contacts (contact+)>
<!ELEMENT contact (type,firstname,middlename,lastname,address,city,country1,zip,telephone,email,affiliation)>
<!ELEMENT type (#PCDATA)><!-- Public,Scientific -->
<!ELEMENT firstname (#PCDATA)>
<!ELEMENT middlename (#PCDATA)>
<!ELEMENT lastname (#PCDATA)>
<!ELEMENT address (#PCDATA)>
<!ELEMENT city (#PCDATA)>
<!ELEMENT country1 (#PCDATA)>
<!ELEMENT zip (#PCDATA)>
<!ELEMENT telephone (#PCDATA)>
<!ELEMENT email (#PCDATA)>
<!ELEMENT affiliation (#PCDATA)>

<!ELEMENT countries (country2+)>
<!ELEMENT country2 (#PCDATA)>

<!ELEMENT criteria (inclusion_criteria,agemin,agemax,gender,exclusion_criteria)>
<!ELEMENT inclusion_criteria (#PCDATA)>
<!ELEMENT agemin (#PCDATA)>
<!ELEMENT agemax (#PCDATA)>
<!ELEMENT gender (#PCDATA)>
<!ELEMENT exclusion_criteria (#PCDATA)>

<!ELEMENT health_condition_code (hc_code+)>
<!ELEMENT hc_code (#PCDATA)>

<!ELEMENT health_condition_keyword (hc_keyword+)>
<!ELEMENT hc_keyword (#PCDATA)>

<!ELEMENT intervention_code (i_code+)>
<!ELEMENT i_code (#PCDATA)>

<!ELEMENT intervention_keyword (i_keyword+)>
<!ELEMENT i_keyword (#PCDATA)>

<!ELEMENT primary_outcome (prim_outcome+)>
<!ELEMENT prim_outcome (#PCDATA)>

<!ELEMENT secondary_outcome (sec_outcome+)>
<!ELEMENT sec_outcome (#PCDATA)>

<!ELEMENT secondary_sponsor (sponsor_name+)>
<!ELEMENT sponsor_name (#PCDATA)>

<!ELEMENT secondary_ids (secondary_id+)>
<!ELEMENT secondary_id (sec_id,issuing_authority)>
<!ELEMENT sec_id (#PCDATA)>
<!ELEMENT issuing_authority (#PCDATA)>

<!ELEMENT source_support (source_name+)>
<!ELEMENT source_name (#PCDATA)>

<!ELEMENT ethics_reviews (ethics_review+)>
<!ELEMENT ethics_review (status,approval_date,contact_name,contact_address,contact_phone,contact_email)>
<!ELEMENT status (#PCDATA)><!-- Not approved,Approved,NA -->
<!ELEMENT approval_date (#PCDATA)><!-- dd/mm/yyyy -->
<!ELEMENT contact_name (#PCDATA)>
<!ELEMENT contact_address (#PCDATA)>
<!ELEMENT contact_phone (#PCDATA)>
<!ELEMENT contact_email (#PCDATA)>
]>
<trials>
  <trial>
    <main>
      <trial_id>IRCT138902053795N1</trial_id>
      <utrn></utrn>
      <reg_name>IRCT</reg_name>
      <date_registration>2010-06-04</date_registration>
      <primary_sponsor>Hamadan University of Medical Sciences</primary_sponsor>
      <public_title>Evaluation of tooth staining by use of polyvinylpyrrolidone (pvp) in composition with Chlorhexidine</public_title>
      <acronym></acronym>
      <scientific_title>Evaluation of tooth staining by use of polyvinylpyrrolidone (pvp) in composition with Chlorhexidine</scientific_title>
      <scientific_acronym></scientific_acronym>
      <date_enrolment>2010-01-21</date_enrolment>
      <type_enrolment>anticipated</type_enrolment>
      <target_size>40</target_size>
      <recruitment_status>Complete</recruitment_status>
      <url>https://irct.ir/trial/3907</url>
      <study_type>interventional</study_type>
      <study_design>Randomization: Randomized, Blinding: Double blinded, Placebo: Not used, Assignment: Parallel, Purpose: Supportive.</study_design>
      <phase>0 (exploratory trials)</phase>
      <hc_freetext>mild to moderate gingivitis.</hc_freetext>
      <i_freetext>Intervention 1: Chlorhexidine, mouth washing with 15cc mouth wash, 2 time a day at morninig and night, for two weeks. Intervention 2: Chlorhexidine + PVP, mouth washing with 15cc mouth wash, 2 time a day at morninig and night, for two weeks.</i_freetext>
      <results_actual_enrolment></results_actual_enrolment>
      <results_date_completed></results_date_completed>
      <results_url_link></results_url_link>
      <results_summary></results_summary>
      <results_date_posted></results_date_posted>
      <results_date_first_publication></results_date_first_publication>
      <results_baseline_char></results_baseline_char>
      <results_participant_flow></results_participant_flow>
      <results_adverse_events></results_adverse_events>
      <results_outcome_measures></results_outcome_measures>
      <results_url_protocol></results_url_protocol>
      <results_IPD_plan></results_IPD_plan>
      <results_IPD_description></results_IPD_description>
    </main>
    <contacts>
      <contact>
        <type>public</type>
        <firstname></firstname>
        <middlename></middlename>
        <lastname></lastname>
        <address></address>
        <city></city>
        <country1></country1>
        <zip></zip>
        <telephone></telephone>
        <email></email>
        <affiliation></affiliation>
      </contact>
      <contact>
        <type>scientific</type>
        <firstname>Hojjat Yoosefimanesh</firstname>
        <middlename></middlename>
        <lastname></lastname>
        <address>Periodontology department, Faculty Dentistry, Hamadan University of Medical Sciences</address>
        <city>Hamadan</city>
        <country1>Iran (Islamic Republic of)</country1>
        <zip></zip>
        <telephone>+98 916 671 1679</telephone>
        <email>yousefimanesh@umsha.ac.ir   hojjatyoosefi@yahoo.com</email>
        <affiliation>Hamadan University of Medical Sciences</affiliation>
      </contact>
    </contacts>
    <countries>
      <country2>Iran (Islamic Republic of)</country2>
    </countries>
    <criteria>
      <inclusion_criteria>Inclusion criteria: no hypersensitivity to chlorhexidine and/or PVP, not using antibiotic during 3 months prior to the study, no pregnancy, having orthodontic and removable appliances, no irreversible teeth staining, without crown and restoration at 12 anterior teeth, No smoking, mild to moderate gingival inflammation without attachment loss</inclusion_criteria>
      <agemin>no limit</agemin>
      <agemax>no limit</agemax>
      <gender>Both</gender>
      <exclusion_criteria></exclusion_criteria>
    </criteria>
    <health_condition_code>
      <hc_code>K05.1</hc_code>
    </health_condition_code>
    <health_condition_keyword>
      <hc_keyword>Chronic gingivitis</hc_keyword>
    </health_condition_keyword>
    <intervention_code>
      <i_code>Treatment - Drugs</i_code>
      <i_code>Treatment - Drugs</i_code>
    </intervention_code>
    <intervention_keyword>
      <i_keyword>Chlorhexidine, mouth washing with 15cc mouth wash, 2 time a day at morninig and night, for two weeks</i_keyword>
      <i_keyword>Chlorhexidine + PVP, mouth washing with 15cc mouth wash, 2 time a day at morninig and night, for two weeks</i_keyword>
    </intervention_keyword>
    <primary_outcome>
      <prim_outcome>Stain index (lobene index). Timepoint: Baseline and after 2 weeks. Method of measurement: 0= no stain  1= light stain  2= moderate stain  3=heavy stain.</prim_outcome>
    </primary_outcome>
    <secondary_outcome>
      <sec_outcome>Bleeding on probing (BOP). Timepoint: Baseline and after 2 weeks. Method of measurement: Code 0 = no bleeding   Code 1= bleeding.</sec_outcome>
      <sec_outcome>Plaque index (Silness &amp; Loe) (PI). Timepoint: Baseline and after 2 weeks. Method of measurement: 0=no plaque,1=visible with probe,2=visible with eye,3=heavy plaque interdental filled with plaque.</sec_outcome>
      <sec_outcome>Gingival index (Silness &amp; Loe GI). Timepoint: Baseline and after 2 weeks. Method of measurement: 0=Normal gingiva,1=Mild inflammation: slight change in color and slight edema. No bleeding on probing, 2=Moderate inflammation: redness, edema, and glazing. Bleeding on probing ,3=edema. Ulceration. Tendency toward spontaneous bleeding.</sec_outcome>
    </secondary_outcome>
    <secondary_sponsor>
      <sponsor_name></sponsor_name>
    </secondary_sponsor>
    <secondary_ids>
      <secondary_id>
        <sec_id></sec_id>
        <issuing_authority></issuing_authority>
      </secondary_id>
    </secondary_ids>
    <source_support>
      <source_name>Hamadan University of Medical Sciences</source_name>
    </source_support>
    <ethics_reviews>
      <ethics_review>
        <status>Approved</status>
        <approval_date>2010-01-19</approval_date>
        <contact_name>Ethnic committee of Hamadan University of Medical Science</contact_name>
        <contact_address>Hamadan University of Medical Sciences, Mardom Park, Shahid Fahmide St., Hamadan Hamadan  Iran (Islamic Republic of)</contact_address>
        <contact_phone></contact_phone>
        <contact_email></contact_email>
      </ethics_review>
    </ethics_reviews>
  </trial>
</trials>
