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Year : 2020  |  Volume : 10  |  Issue : 2  |  Page : 330-334

Significance of microbial analysis during removal of miniplates at infected sites in the craniomaxillofacial region - An evaluative study

Department of Oral and Maxillofacial Surgery, Dental Institute, Rajendra Institute of Medical Sciences, Ranchi, Jharkhand, India

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Department of Oral and Maxillofacial Surgery, Dental Institute, Rajendra Institute of Medical Sciences, Ranchi - 834 009, Jharkhand
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DOI: 10.4103/ams.ams_239_19

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Introduction: Open reduction and internal fixation (ORIF) can be complicated by miniplate exposure, loosening, or infection. Infected miniplates lead to exposure, extrusion, fistula formation, bony nonunion, and osteomyelitis. Whenever any posttreated cases of ORIF become infected, it is treated blindly with a high dose of antibiotics and surgical removal of infected miniplates or screws. The aim and objectives of the study were to identify the frequency and site of infection in craniomaxillofacial implants and significance of microbes isolated from the infected region. Materials and Methods: Removal of miniplates was being performed on 19 patients. Among them, 14 had infection or sinus opening, 3 had plate exposure, and 2 were removed asymptomatically according to patient willingness. Aspirated fluid/pus was collected and sent for microbial culture and sensitivity test. Test of significance of individual microbes was done using Z-test and the value of P was calculated. Results: Among 14 patients associated with miniplate infection, 11 (78%) had infection in the mandible and 3 at zygoma. The bacteria isolated were mainly Staphylococcus aureus (7) along with coagulase-negative Staphylococcus (2), Pseudomonas aeruginosa (3), Escherichia coli (2), Streptococcus salivarius (2), and Acinetobacter genre (1). S. aureus was predominantly present in majority of the samples and statistically significant at P = 0.023. Discussion: The present study observed that in contrast to other sites in the body, there is versatility in microbial flora in the craniomaxillofacial region. It is essential for routine microbial analysis of samples and antibiotic susceptibility test for proper treatment of such cases.

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