Abstract: Objective: To study the effects of minimally invasive flapless technique on efficacy, degree of pain, and aesthetics of oral implant surgery. Methods: Ninety cases undergoing oral implant surgery were selected in our hospital and divided into the group A (received single tooth with conventional flap implantation) and group B (underwent minimally invasive flapless implantation), with 45 cases in each. The efficacy, degree of pain, operation time, and aesthetics were analyzed and compared between two groups. Results: The operation time and duration time of postoperative pain (13.95±0.26min and 0.63±3.65d) in group B were lower than those of group A (28.05±0.53)min and (3.74±0.42)d (P<0.05). The amount of alveolar bone resorption and height of gingiva papilla showed no significant difference between two groups. The scores of aesthetics in group B (7.46±1.25points) was higher than that of group A (13.05±1.74points) (P<0.01). Conclusion: Compared with conventional flap implantation, the minimally invasive flapless technique can shorten the operation time and reduce the degree of pain, which improves the aesthetics and achieves better clinical effects.

Key words: Minimally invasive flapless technique , Oral implantation , Degree of pain, Aesthetics