Failing Molar Fillings with Recurrent Decay – Clinical Case Analysis

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Severity: 

Teeth Case Analysis (Based on Photo)

Visual Findings (Zoom 100%)

From the provided image, the lower posterior teeth show:

1. Multiple failing restorations

  • Old amalgam fillings with breakdown and marginal leakage

  • Visible dark gaps suggesting secondary caries

2. Deep cavitated lesion

  • The middle molar shows a large open cavity with food debris

  • Likely dentin involvement → possible pulp irritation

3. Gingival inflammation

  • Localized swelling and redness near the cavitated tooth

  • Possible food impaction + plaque retention

4. Fractured tooth structure

  • Loss of enamel walls around restoration

  • Tooth integrity compromised


Possible Diagnosis (Clinical Correlation Needed)

  • Recurrent dental caries under old fillings

  • Fractured restoration with food trap

  • Pulpitis risk (reversible or irreversible)

  • Localized gingivitis / early periodontal pocket

  • Possible need for endodontic assessment


Recommended Treatment Process

Step 1 – Diagnostic Phase (Day 1–2)

  • Periapical X-ray or bitewing

  • Pulp vitality testing

  • Periodontal probing

Step 2 – Initial Treatment (Day 2–5)

  • Removal of failing restorations

  • Caries excavation

  • Temporary filling if pulp close

Step 3 – Definitive Treatment (Day 5–14)

Depending on pulp status:

  • Large composite/onlay if pulp healthy

  • Root canal treatment + crown if pulp infected

  • Extraction + implant/bridge if non-restorable


Healing Timeline

If only deep filling:

  • Sensitivity settles in 3–7 days

  • Gum healing 5–10 days

If root canal:

  • Pain relief within 48–72 hours

  • Full tissue stabilization 7–14 days

If extraction:

  • Soft tissue healing 7–14 days

  • Bone healing 6–12 weeks


Risk If Delayed Beyond 14 Days

  • Pulp necrosis → severe infection

  • Abscess formation

  • Facial swelling

  • Bone loss around tooth

  • Possible tooth fracture to gum level (non-restorable)

  • Spread of infection requiring antibiotics or emergency care


Clinical Comments

This case shows high risk of pulp involvement due to:

  • Large recurrent decay

  • Food impaction

  • Structural weakness of molar

Early intervention greatly improves tooth survival.


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