Conclusion The severity of gingival bleeding is associated with age and gender, and tends to be site-specific.
结论牙龈炎患者牙龈出血的程度与年龄、性别有关，出血的分布有牙位、位点特异性。
Results 15-year-old group is significantly higher than 12-year-old group in gingival bleeding detection frequency; dental calculus detection frequency and average section count.
结果：两个年龄组的牙龈出血检出率、牙石检出率以及牙石平均区段数，15岁年龄组明显高于12岁年龄组。
Results 15-year-old group is significantly higher than 12-year-old group in gingival bleeding detection frequency; dental calculus detection frequency and average section count.
结果：两个年龄组的牙龈出血检出率、牙石检出率以及牙石平均区段数，15岁年龄组明显高于12岁年龄组。
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