09.02.23
US Patent 11,737,969 B2 (Saqib Ali, Imran Farooq, Amr Bugshan, Intisar Ahmad Siddiqui, Khalifa S. Al-Khalifa, Mohammed Taha Ali Al-Hariri); Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia, has been awarded a US patent for a mineral treatment method for damaged teeth. It entails extracting a propolis of Brazilian green into an oil to form a Brazilian green propolis oil; contacting the damaged teeth with citric acid; then contacting the damaged teeth with the Brazilian green propolis oil for a time and under conditions to increase a Vickers Hardness of the damaged teeth by at least 5%.