Please select the arm or intervention descriptions that belong to the clinical trial below.
Title: Effect of Three Periodontal Therapies in Current Smokers and Non-Smokers
Brief Summary: The purpose of this study is to determine in current and non-smokers the clinical and microbiological effects of 3 therapies: scaling and root planing (SRP) alone; SRP in combination with the orally administered antibiotic metronidazole; and SRP with the orally administered antibiotics metronidazole and amoxicillin along with the locally delivered antibiotic doxycycline at periodontal pockets \>= 4 mm.


Options:
A: Arm Label: Control; Type: PLACEBO_COMPARATOR; Interventions: Procedure: Scaling and root planing, Drug: Placebos active phase, Drug: Placebos healing phase | Arm Label: Active phase; Type: ACTIVE_COMPARATOR; Interventions: Procedure: Scaling and root planing, Drug: Metronidazole active phase, Drug: Amoxicillin active phase, Drug: Placebos healing phase | Arm Label: Healing phase; Type: ACTIVE_COMPARATOR; Interventions: Procedure: Scaling and root planing, Drug: Metronidazole healing phase, Drug: Amoxicillin healing phase, Drug: Placebos active phase | Intervention Type: PROCEDURE; Name: Scaling and root planing; Assigned to Arm(s): Active phase, Control, Healing phase | Intervention Type: DRUG; Name: Metronidazole active phase; Assigned to Arm(s): Active phase | Intervention Type: DRUG; Name: Metronidazole healing phase; Assigned to Arm(s): Healing phase | Intervention Type: DRUG; Name: Amoxicillin active phase; Assigned to Arm(s): Active phase | Intervention Type: DRUG; Name: Amoxicillin healing phase; Assigned to Arm(s): Healing phase | Intervention Type: DRUG; Name: Placebos active phase; Assigned to Arm(s): Control, Healing phase | Intervention Type: DRUG; Name: Placebos healing phase; Assigned to Arm(s): Active phase, Control
B: Arm Label: Scaling and root planing alone; Type: PLACEBO_COMPARATOR; Interventions: Procedure: Scaling and root planing | Arm Label: SRP + Metronidazole; Type: ACTIVE_COMPARATOR; Interventions: Drug: Metronidazole | Arm Label: SRP + MET + Amoxicillin + Doxycycline; Type: ACTIVE_COMPARATOR; Interventions: Drug: Amoxicillin, Drug: Doxycycline | Intervention Type: PROCEDURE; Name: Scaling and root planing; Assigned to Arm(s): Scaling and root planing alone | Intervention Type: DRUG; Name: Metronidazole; Assigned to Arm(s): SRP + Metronidazole | Intervention Type: DRUG; Name: Amoxicillin; Assigned to Arm(s): SRP + MET + Amoxicillin + Doxycycline | Intervention Type: DRUG; Name: Doxycycline; Assigned to Arm(s): SRP + MET + Amoxicillin + Doxycycline
C: Arm Label: Amoxicillin and Metronidazole; Type: ACTIVE_COMPARATOR; Interventions: Procedure: Full-mouth ultrasonic debridement, Drug: Amoxicillin, Drug: Metronidazole | Arm Label: Clarithromycin; Type: EXPERIMENTAL; Interventions: Procedure: Full-mouth ultrasonic debridement, Drug: Clarithromycin | Intervention Type: PROCEDURE; Name: Full-mouth ultrasonic debridement; Assigned to Arm(s): Amoxicillin and Metronidazole, Clarithromycin | Intervention Type: DRUG; Name: Clarithromycin; Assigned to Arm(s): Clarithromycin | Intervention Type: DRUG; Name: Amoxicillin; Assigned to Arm(s): Amoxicillin and Metronidazole | Intervention Type: DRUG; Name: Metronidazole; Assigned to Arm(s): Amoxicillin and Metronidazole
D: Arm Label: clarithromycin group; Type: ACTIVE_COMPARATOR; Interventions: Drug: Clarithromycin, Other: One-stage full-mouth ultrasonic debridement (FMUD) | Arm Label: placebo group; Type: PLACEBO_COMPARATOR; Interventions: Drug: Placebo, Other: One-stage full-mouth ultrasonic debridement (FMUD) | Intervention Type: DRUG; Name: Clarithromycin; Assigned to Arm(s): clarithromycin group | Intervention Type: DRUG; Name: Placebo; Assigned to Arm(s): placebo group | Intervention Type: OTHER; Name: One-stage full-mouth ultrasonic debridement (FMUD); Assigned to Arm(s): clarithromycin group, placebo group

Answer: B