Objective To analyze the clinical effect of oral repair technology in the treatment of early cracked teeth. Methods A total of 102 patients with early cracked teeth treated in the Department of Stomatology of our hospital from November 2021 to November 2022 were selected as the research objects. They were divided into control group and observation group by random number table method, with 51 cases in each group. The control group was treated with traditional grinding and filling, and the observation group was treated with oral repair technology. The repair effect, pain degree (VAS score), complication rate, recurrence rate, comfort and satisfaction were compared between the two groups. Results The total effective rate of repair treatment in the observation group was higher than that in the control group (P