1、Can we prevent dental calculus and odontolith?
2、What are dental calculus and odontolith?
3、How to remove the dental calculus and odontolith?
4、The detection rates of gingival bleeding, dental calculus, periodontal pocket and periodontal attachment loss were 93.
5、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.
