Questioning dual antimicrobial therapy as first line in recent Australian Therapeutic Guidelines

Appropriateness of antimicrobial prescribing for oral and dental conditions in Australian hospitals: 2013 to 2022

OBJECTIVES

Dentists manage a variety of oral infections in clinical practice. Inappropriate antimicrobial prescribing by dentists occurs frequently and antimicrobial stewardship strategies should include dentistry. The aim of this retrospective analysis of the Australian Hospital National Antimicrobial Prescribing Survey (Hospital NAPS) dataset, was to describe the types of oral and dental indications where antimicrobials were prescribed, and assess the guideline compliance and appropriateness of the antimicrobials in Australian hospitals.

METHODS

Data from the Hospital NAPS was extracted for oral and dental indications from 2013 to 2022. The types of oral and dental indications presented, and the corresponding antimicrobials prescribed were assessed for compliance according to national prescribing guidelines, and appropriateness according to the NAPS structured algorithm.

RESULTS

A total of 8,001 prescriptions for 7,477 patients were identified, from 433 hospitals. Antifungal, antibiotic and antiviral agents accounted for 84.5 %, 15.4 % and 0.03 % of prescriptions respectively. A greater proportion of antibiotics were prescribed in regional and rural areas compared to antifungals. The prescriptions assessed as compliant were 80.0 % and 44.7 % of antifungals and antibiotics respectively. Prescriptions assessed as appropriate were 84.4 % of antifungals, and 65.3 % of antibiotic prescriptions.

CONCLUSIONS

A wide variety of antimicrobials were used with moderate levels of compliance and appropriateness. Future interventions should include targeted education, utilisation of prescribing guidelines, and tools to diagnose and manage oral and dental conditions. Consideration can be given to adjustment of the Hospital NAPS tool to cater for oral conditions and include the provision of dental treatment in the management of these infections.

CLINICAL SIGNIFICANCE

A wide variety of oral and dental conditions are presented in Australian hospital settings, managed by a range of antibiotics and antifungals, with moderate levels of compliance to guidelines and appropriateness. Antimicrobial stewardship strategies should target and support dentistry in hospital settings.

Oral Antibiotic for Empirical Management of Acute Dentoalveolar Infections-A Systematic Review

Concerns regarding increasing antibiotic resistance raise the question of the most appropriate oral antibiotic for empirical therapy in dentistry. The aim of this systematic review was to investigate the antibiotic choices and regimens used to manage acute dentoalveolar infections and their clinical outcomes. A systematic review was undertaken across three databases. Two authors independently screened and quality-assessed the included studies and extracted the antibiotic regimens used and the clinical outcomes. Searches identified 2994 studies, and after screening and quality assessment, 8 studies were included. In addition to incision and drainage, the antibiotics used to manage dentoalveolar infections included amoxicillin, amoxicillin/clavulanic acid, cefalexin, clindamycin, erythromycin, metronidazole, moxifloxacin, ornidazole and phenoxymethylpenicillin. Regimens varied in dose, frequency and duration. The vast majority of regimens showed clinical success. One study showed that patients who did not receive any antibiotics had the same clinical outcomes as patients who received broad-spectrum antibiotics. The ideal choice, regimen and spectrum of empirical oral antibiotics as adjunctive management of acute dentoalveolar infections are unclear. Given that all regimens showed clinical success, broad-spectrum antibiotics as first-line empirical therapy are unnecessary. Narrow-spectrum agents appear to be as effective in an otherwise healthy individual. This review highlights the effectiveness of dental treatment to address the source of infection as being the primary factor in the successful management of dentoalveolar abscesses. Furthermore, the role of antibiotics is questioned in primary space odontogenic infections, if drainage can be established.

Measuring Antibiotic Stewardship Programmes and Initiatives: An Umbrella Review in Primary Care Medicine and a Systematic Review of Dentistry

Antibiotic stewardship aims to tackle the global problem of drug-resistant infections by promoting the responsible use of antibiotics. Most antibiotics are prescribed in primary care and widespread overprescribing has been reported, including 80% in dentistry. This review aimed to identify outcomes measured in studies evaluating antibiotic stewardship across primary healthcare. An umbrella review was undertaken across medicine and a systematic review in dentistry. Systematic searches of Ovid Medline, Ovid Embase and Web of Science were undertaken. Two authors independently selected and quality assessed the included studies (using Critical Appraisal Skills Programme for the umbrella review and Quality Assessment Tool for Studies with Diverse Designs for the systematic review). Metrics used to evaluate antibiotic stewardship programmes and interventions were extracted and categorized. Comparisons between medical and dental settings were made. Searches identified 2355 medical and 2704 dental studies. After screening and quality assessment, ten and five studies, respectively, were included. Three outcomes were identified across both medical and dental studies: All focused on antibiotic usage. Four more outcomes were found only in medical studies: these measured patient outcomes, such as adverse effects. To evaluate antibiotic stewardship programmes and interventions across primary healthcare settings, measures of antibiotic use and patient outcomes are recommended.