Abstract: Objective: To establish an experimental model of goat animal in the maxillary sinus and compare the effect of IBS osteotome and Summers osteotome on the maxillary sinus lift in goats. Methods: A large number of pre-experimental anatomical analysis of goat maxillary sinus, combined with goat CBCT to ex-plore the maxillary sinus lifting site, established an experimental model of goat animal lifted in the maxil-lary sinus. The 18 local goats with 36 maxillary sinus were divided into experimental group and control group. The experimental group used IBS osteotome. The control group used Summers osteotome. The 18 goats were randomly divided into 5, 8, 10mm according to the maxillary sinus lifting height. Three groups, each with 6 sheep heads, counted the number of perforations in each experimental group and control group and recorded the height of maxillary sinus lift during perforation. Results: An animal model was es-tablished for the maxillary sinus elevation in the 6-8mm lobe of the maxillary first molar of the goat. The number of perforation of the maxillary sinus was 0, 1, and 3 in each experimental group, and the number of perforation in the maxillary sinus was 1, 5, and 6, respectively. There was no significant difference in safety between the experimental group and the control group when the height was 5 mm in the maxillary sinus[(5.00±0.00) mm vs(4.92±0.20)mm, P>0.05]. The experimental group and the control group were in the maxillary sinus. When the height was 8mm, the difference was significant[(7.83±0.41)mm vs (6.58± 1.32)mm, P<0.05]. There was significant difference in safety between the experimental group and the con-trol group when the maxillary sinus height was 10mm. (9.17±1.57)mm vs(6.08±0.97) mm, P<0.05]. Conclusion: The maxillary sinus elevation of the maxillary first molar is significantly improved in the maxil-lary sinus. When the lifting height is less than 5mm, there is no significant difference between the two lift-ing effects. The lifting height is greater than 5mm. IBS osteotome has better improvement than Summers osteotome.

Key words: IBS internal osteotome, Summers osteotome, maxillary sinus elevation height, goat ani-mal experiment model