Abstract:

Objective:The aim of this study is to explore the effectof hamulotome on the eustachian tube function and verify the function of the tensor veli palatili muscle on eustachian tube.Methods:Single-sided hamulotome were carried out in the rabbits under the direct visual. And the middle ear cavity mucosa of the rabbitswas collected atdifferentintervals and dyedwith PAS and PHto ob- serve the middle ear changes under microscope.Results:Middle ear function changed obviously after the hamulotome, with in- crease in globular cells, submucosal edema and inflammatory cells. And mucin was not found in several cavities.Conclusion: Hamulotome do affecton the middle earfunction and should notbe damaged in orderto protectthe middle earfunction in some pa- tients.

Key words: cleft palate, hamulotome, middle ear function