Antibiotics are generally not advised for patients with localised dentoalveolar abscesses (LDA) in outpatient dental clinics, as their overuse can lead to antibiotic resistance. A verification study conducted at Rompin Dental Clinic revealed that 50.1% of adult patients with LDA were prescribed antibiotics. This study aimed to reduce the rate of antibiotic prescriptions for adult patients with LDA to 30.0% within one year, which is in line with the established standard. This quality improvement study used universal sampling and measured the percentage of LDA prescription slips with antibiotics prescribed. The two main contributing factors identified were substandard practices by dental officers and external pressures to prescribe antibiotics. Additional factors included incorrect teachings from peers, lack of awareness of current guidelines and recommendations, lack of experience, inadequate knowledge of antibiotic use, misdiagnosis and management, and pressure from staff and patients. To address these issues, strategies were implemented in three phases: 1) enhancing dental officers’ practices through a newly developed care process, displaying a prescribing guide, and conducting Continuous Dental Education sessions; 2) emphasising staff and public education through social media and an Antibiotics Awareness Week campaign; and 3) ensuring adherence to previous strategies. As a result, the percentage of antibiotic prescriptions for LDA decreased from 50.1% to 28.6 % in 2019, followed by 21.3% in 2020 and 22.9% in 2021. Continuous monitoring through regular education and enforcement can promote a healthy antibiotic-prescribing culture among dental officers, helping to curb antibiotic resistance.