Biofilm
A structured community of microorganisms adhered to a surface and encased in a self-produced extracellular matrix; in dentistry, the preferred scientific term for dental plaque.
Full Definition
In dental hygiene science, 'biofilm' is the microbiologically precise term for the organized community of bacteria, fungi, and other microorganisms that colonize tooth surfaces, implants, and restorations, embedded in an extracellular polymeric matrix. The term has largely replaced 'plaque' in peer-reviewed and academic dental hygiene literature, though 'plaque' remains acceptable in clinical notes and patient communication. Editors should upgrade 'plaque' to 'biofilm' in research manuscripts unless the author is specifically citing a plaque index or referring to calcified deposits. The word is written as one unhyphenated unit.
Usage
Usage note: Prefer 'biofilm' over 'plaque' in scientific and academic texts. 'Plaque' is acceptable in clinical progress notes and patient-facing materials. Never hyphenate.
In Context
- "The study investigated the effect of oil pulling on oral biofilm formation over a 21-day period." — Research Abstract
- "When editing for a peer-reviewed journal, replace informal references to 'plaque buildup' with the scientifically preferred term 'biofilm accumulation.'" — Copyediting Instruction