Perio Card 20 part 2 (Smokers Demonstrate an Increase in Tanerella forsythia)By Hiba Al-Shawa / July 21, 2021 Back to: Periodontology Mnemonics Previous Lesson Perio Card 20 part 1 (Smokers Demonstrate More Orange & Red Microbial Complexes) Lesson 1 within section Periodontics – Gingivitis/ Periodontal Surgery. You must enroll in this course to access course content. Next Lesson Perio Card 23 part 1 (Red Complex Is Associated with Severe Periodontitis) Lesson 3 within section Periodontics – Gingivitis/ Periodontal Surgery. You must enroll in this course to access course content.