What can be useful?
Previous records, where available.
← All explanationsPeriodontitis grading
What do grades A, B and C mean?
Grading adds an estimate of progression to a periodontitis diagnosis. Grades A, B and C indicate slower, moderate or faster progression. Assessment uses longitudinal records where available, or indirect evidence, together with relevant risk modifiers.
For training & practice ↓
AI-generated
Choose a view
Look beyond one visit
Earlier records may show changes in attachment or bone. A single photograph cannot measure the rate of progression.
Combine the evidence
Indirect information is used when comparison records are unavailable. Smoking and diabetic blood-glucose control can influence classification.
Inform ongoing care
The estimate supports treatment and maintenance planning. It is not a certain forecast and can be reviewed when new information becomes available.
At a glance
What should be discussed?
Smoking, diabetes and relevant health changes.
What follows?
Individual planning rather than a fixed prediction.
Knowledge in motion
Explained in 36 seconds.
Three steps. No audio.
Each scene can also be selected manually.
Silent educational film with German on-screen text and simplified teaching images. Not a patient case or a promised treatment outcome. The full English explanation is available below.
Read the film text in English
Look beyond one visit
Earlier records may show changes in attachment or bone. A single photograph cannot measure the rate of progression.
Combine the evidence
Indirect information is used when comparison records are unavailable. Smoking and diabetic blood-glucose control can influence classification.
Inform ongoing care
The estimate supports treatment and maintenance planning. It is not a certain forecast and can be reviewed when new information becomes available.
Often confused
Grade versus stage
Limited accumulated damage can coexist with faster progression. This is why stage and grade are recorded separately.
Quick answers
Is grade C a judgement or blame?
No. It is a clinical assessment, not a judgement of the person or their discipline.
Does grade A mean nothing can happen?
No. Treatment and reviews still depend on the findings, even when progression appears slow.
Is a higher grade the same as a higher stage?
No. Rate of progression and accumulated damage describe different dimensions.
At the practice
For a personal discussion
Editorially suggested question to discuss with Dr Niusha Barahmand Pour:
Which longitudinal records are available, and which modifiable factors matter for me?
Your records can help explain what the grade means.
Discuss periodontal progressionAppointment selection at DoctolibLearning layer for training & practiceUnderstand terminology and deepen knowledge
- Progression
- Advancement of disease.
- Direct evidence
- Documented change over time.
- Modifier
- A factor influencing classification.
Make the distinction
Limited accumulated damage can coexist with faster progression. This is why stage and grade are recorded separately.
Sources and context
Editorial research: . General information, not an individual diagnosis or treatment recommendation. Teaching illustrations are simplified and do not depict a patient case.