No, the essence of thesis defense is to report the research results in recent years, including the research results and data in the thesis. What can best reflect the research results is the published papers. Don't choose published papers for thesis defense. In the evaluation of senior teachers' qualifications, the defense of representative papers has become an insurmountable threshold. The appraisal and defense of the thesis is a test of the authenticity and advantages and disadvantages of the teacher's thesis.