Please select the eligibility criteria that correspond to the clinical trial below.
Title: Clinical Evaluation of Systemic Moxifloxacin Compared to Amoxicillin Plus Metronidazole Adjunct to Non-surgical Treatment in Generalized Aggressive Periodontitis: A Randomized Clinical Trial
Brief Summary: The objective of this randomized clinical study was to evaluate the effect of systemic administration of moxifloxacin compared to amoxicillin plus metronidazole combined with non-surgical treatment in patients with generalized aggressive periodontitis (GAgP) in 6-month follow-up.

A total of 40 systemically healthy patients with GAgP will evaluate in this randomized clinical trial. Periodontal parameters (plaque index, gingival index, probing depth, bleeding on probing, clinical attachment level) will be recorded at baseline, 1st, 3rd and 6th month. Patients will receive either 400 mg moxifloxacin per os once daily or 500 mg metronidazole and 500 mg amoxicillin per os three times daily for 7 days consecutively.


Options:
A: Inclusion Criteria:

* The periodontal diagnosis of subjects with GAgP was established on the basis of clinical and radiographic criteria defined by the 1999 International World Workshop for a Classification of Periodontal Diseases and Conditions.
* Patients were included if they were between 18 and 35 years of age and otherwise healthy.

Exclusion Criteria:

* if the patients had any known systemic diseases or conditions that can/could influence the periodontal status (cancer, cardiovascular and respiratory diseases)
* history of hepatitis or HIV infection,
* immunosuppressive chemotherapy
* current pregnancy, planning a pregnancy or lactation
* requirement for antibiotic prophylaxis
* oral diseases other than GAgP, ongoing orthodontic therapy
* a history of antibiotic therapy or periodontal treatment within the preceding six months.
* Subjects were excluded if they had known allergies to quinolones or penicillin or metronidazole
* Not willing to participate to the study.
* Not accept to sign written informed consent
B: Inclusion Criteria:

* Females and males with advanced periodontal disease referred between November 2007 and January 2009.
* No diseases known to be associated with periodontal diseases, i.e. diabetes mellitus, rheumatoid arthritis, pregnancies.
* No continuous medication known to affect the severity or progression of periodontal diseases.
* No previous systematic periodontal treatment.
* More than 5 pockets 5mm \< PPD \< 9 mm after a 3 month hygiene phase - i.e. before inclusion into study.
* Oral hygiene; \< 5% of surfaces with plaque at inclusion time.
* Signing an informed consent.

Exclusion criteria:

* diseases known to be associated with periodontal diseases, i.e. diabetes mellitus, rheumatoid arthritis.
* pregnancy
* continuous medication known to affect the clinical expression of periodontal diseases
* subgingival microbiological diagnosis which reveals bacteria with reduced/no sensitivity to metronidazole
C: Inclusion Criteria:

* under 30 years old and systemically healthy, with at least 20 teeth present. Be willing to participate in the study which is corroborated by signing the informed consent form.

Commit to attend post-therapeutic controls and stop drinking alcohol during the time of ingestion of antibiotics.

Exclusion Criteria:

* Subjects in whom are contraindicated or with hypersensitivity to quinolones - Subjects who have undergone periodontal, surgical or mechanical antibiotic therapy six months before the start of the study according to interrogation.

Women in pregnancy or lactation, corroborated with previous medical history and medical consultation.
D: Inclusion Criteria:

* Subjects must be 20 years of age or older
* Have at least 18 natural teeth
* Four or more clinical attachment level(CAL) ≥ 3mm
* Four or more periodontal pockets with a probing depth (PD) ≥ 4mm
* Have Bleeding on probing
* Provide informed consent and willingness to cooperate with the study protocol

Exclusion Criteria:

* Forbidden History of Panax Notoginseng and Rehmanniae Radix Preparata
* Hypersensitivity of Doxycycline
* Hypersensitivity of Zea mays L. extract
* Critical diseases such as HIV previous three years
* Patients with mental retardation and dementia
* Systemic diseases such as diabetes and hypertension
* Patients who take Anticoagulants or Antiplatelet Agents
* Patients who have malignant tumor
* Smoker
* Continually use for 2weeks of phenytoin, calcium channel blocker, cyclosporin, coumarin, nonsteroidal anti-inflammatory drugs and aspirin use in the previous one month
* Patients who need malignant tumor
* Patients who received periodontal treatment within the last 6 months
* Pregnant or lactating females

Answer: A