孕妇血压低有什么影响:请求英语翻译!6级以上进!

Goal Objective: Lengthens the technique and the gum excision method compared with the tooth crown breaks the end in the old age patient to break off to in the under remnant root repair application curative effect; Method Methods selects the old age clinical case of illness which my branch receives a medical examination, are partial after the inspection trouble or completely covers the root of a tooth cross section, stochastically divides into two groups, the experimental group 30 examples uses the tooth crown to lengthen the technique, the comparison group 30 examples uses the gum excision method. Technique latter 6 week good pile crown repair. Finally Mean: The technique latter 6 weeks reexaminations, the tooth crown lengthens the technique the curative effect and the gum excision method ratio, two between has the difference. After after 1 year the subsequent visit gum excision method group pile crown repair the illness complication disease incidence rate is higher than the tooth crown to lengthen the technique group. Conclusion Results: The tooth crown lengthens the technique and the gum excision method applies in the old age patient remnant root repair can obviously improve the bag depth, but former surpasses latter