Introduction: Osteosarcoma (OS) is primary malignant bone tumor in which mesenchymal cell produce osteoid. OS of jawbones is uncommon. representing 4-8% of all OS. Case Report: This paper reports the case of a- 29 year-old female with an OS in mandibular first molar as exophitic lesion with smooth surface during 1 year. https://www.bekindtopets.com/limited-offer-Handlebar-Grip-for-the-Motovox-MVS10-super-offer/