CClinicalTrials.gg
CompletedNCT04620018Updated Nov 20, 2020

Comparison of Three Antibiotic Protocols in Prevention of Infection in Dental Implant Surgery

An interventional study of Amoxicillin in Dental Implant Failed, sponsored by Shiraz University of Medical Sciences. Completed. Open to participants aged 18 Years to 75 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2020-11-20.

Sponsored by Shiraz University of Medical Sciences · Not applicable, Interventional, and Prevention

From the registry’s dates

  • Registered 4 years 1 month after the study started (first participant enrolled Sep 2016, registered Nov 2020).
Phase
Not applicable
Study type
Interventional
Enrollment
450
Allocation
Randomized
Ages
18 Years to 75 Years
Sex
All
01

Study summary

Subjects who underwent a dental implant surgery were studied.Subjects randomly were aligned into three groups:In group 1, subjects received prophylactic antibiotic orally (Amoxicillin 2mg ,1 hour before surgery) and post-surgical antibiotic (Amoxicillin 500 mg , q8h for five days), subjects received only prophylactic antibiotic (Amoxicillin 2mg ,1 hour before surgery) in group 2 ,and in group 3, subjects received post-surgical antibiotic (Amoxicillin 500 mg , q8h for five days). The sign and symptom of infection were studied and the incidence of infection in each group was determined.

Read the detailed description

Subjects eligible for study inclusion had an edentulous area in the mandible or maxilla and underwent a dental implant surgery. Subjects were excluded from study enrollment if they had systemic diseases which affect bone metabolism, history of allergy to amoxicillin, refused study enrollment or failed to return for follow-up.

Subjects were randomly divided into three groups : In group 1, subjects received prophylactic antibiotic orally (Amoxicillin 2mg ,1 hour before surgery) and post-surgical antibiotic (Amoxicillin 500 mg , q8h for five days), subjects received only prophylactic antibiotic (Amoxicillin 2mg ,1 hour before surgery) in group 2 ,and in group 3, subjects received post-surgical antibiotic (Amoxicillin 500 mg , q8h for five days) . An independent researcher made random allocation cards using computer-generated random. Then, allocated cases were placed in a sealed envelope. All subjects used 0.2% chlorhexidine mouthwash in the treatment period. All implants were placed with a two-stage protocol.

All subjects were followed up for 3 months to assess any infection signs and symptoms. Infection was diagnosed based on clinical findings such as pain, redness of the area, and discharge around the fixture.An independent dentist who was blind the study groups, evaluated all subjects.

02

Conditions studied

  • Dental Implant Failed

Browse trials for

Keywords

  • dental implant
  • osseointegration
  • infection
03

In context

Infections

6,687 studies on the registry are indexed under Infections; 807 are open to participants now.

This study's enrollment of 450 is above the median of 120 across 4,200 interventional studies indexed under Infections.

Browse Infections studies →

Lead sponsor

Shiraz University of Medical Sciences is the lead sponsor of 129 studies on the registry; 6 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 75 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  • Have an edentulous area in the mandible or maxilla
  • underwent a dental implant surgery

Exclusion criteria

Exclusion Criteria:

  • systemic diseases which affect bone metabolism
  • history of allergy to amoxicillin
  • refused study enrollment
  • failed to return for follow-up.
05

Study design

Phase
Not applicable
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Participant)
Enrollment
450 participants (actual)

Study arms

  • Active comparator
    Pre and post op Antibiotic

    subjects received prophylactic antibiotic orally (Amoxicillin 2mg ,1 hour before surgery) and post-surgical antibiotic (Amoxicillin 500 mg , q8h for five days)

    Drug: Amoxicillin

  • Active comparator
    Pre-op antibiotic

    subjects received only prophylactic antibiotic (Amoxicillin 2mg ,1 hour before surgery)

    Drug: Amoxicillin

  • Active comparator
    Post-op antibiotic

    subjects received post-surgical antibiotic (Amoxicillin 500 mg , q8h for five days)

    Drug: Amoxicillin

Interventions

  • DrugAmoxicillin

    Subjects received Amoxicillin before surgery, before and after surgery ,and only after surgery.

    Also known as: GLAXOSMITHKLINE

06

What researchers measure

Primary outcomes

  1. Infection incidence

    pain, redness of the area, and discharge around the fixture.

    Time frame: 3 months

07

Study locations

No study locations are listed for this record.

08

References and documents

Individual participant data

Plan to share: Yes — We can present the data of participant without individual identification.

Supporting information: Study protocol, Sap, Csr

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Nov 20, 2020, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04620018
Lead sponsor
Shiraz University of Medical Sciences
Collaborators
Shahid Beheshti University of Medical Sciences
Responsible party
RTabrizi (Shiraz university of medical sciences, Shiraz University of Medical Sciences) — Principal investigator
First posted
Nov 6, 2020
Start date
Sep 30, 2016
Primary completion
Feb 1, 2020
Completion
Sep 1, 2020
Last update
Nov 20, 2020

Study contacts

Reza Tabrizi, DDS
study director · Shiraz University of Medical Sciences

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Nov 2020. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion