To reduce inflammation in the posterior molars, which oral hygiene adjunct is recommended?

• A. Use an interdental brush for the posterior molars
• B. Floss daily
• C. Use a mouth rinse containing alcohol
• D. Brush more often with the same technique

Answer: (A)

Removing plaque from between teeth is essential to reduce inflammation around posterior molars. The spaces between these teeth, especially near the gumline and in furcations, are hard to clean with a regular tooth brush alone. An interdental brush is designed to fit into those interproximal gaps and effectively disrupt and remove biofilm that brushing misses. This targeted cleaning (an adjunct to brushing) directly reduces the bacterial load driving inflammation in the posterior region, leading to less redness, tenderness, and bleeding over time.

Flossing, while helpful, can be technique-sensitive and may not consistently clean the more complex contact areas of molars or furcations as reliably as an appropriately sized interdental brush. Mouth rinses containing alcohol don’t provide the same mechanical cleaning and can irritate tissues or dry the mouth, which doesn’t support inflammation control. Brushing more often with the same technique improves surface cleaning but doesn’t address the plaque buildup in interproximal areas where inflammation on posterior molars originates.

So, using an interdental brush for posterior molars best supports interproximal plaque control and inflammation reduction.