Final answer:
Antibiotic therapy, often a combination of tetracycline, doxycycline, macrolides, or ß-lactams, along with rigorous oral hygiene, are the best treatments to slow disease progression in Ms. Smith's case of ongoing clinical attachment loss.
Step-by-step explanation:
For Ms. Smith, a 65-year-old tax accountant who has experienced a 3-mm clinical attachment loss around her mandibular molars post-periodontal surgery, the best therapy to slow down disease progression would be antibiotic therapy along with meticulous oral hygiene. The specific antibiotics used could include tetracycline, doxycycline, macrolides, or ß-lactams; often, a combination of antibiotics is given to target the variety of microbes causing the periodontitis. Additionally, practicing good oral hygiene and receiving regular professional dental cleanings are vital components of treatment and prevention.
Periodontal disease is affected by the accumulation of plaque and the bacterial colonization that leads to inflammation and tissue damage. To prevent further clinical attachment loss, besides the antibiotics prescribed, Ms. Smith should maintain excellent oral hygiene, including regular flossing and use of mouthwash to manage bacterial proliferation. Local delivery of antibiotics directly to the gum may also be beneficial to treat the specific sites with attachment loss.