Managing a child's first permanent molar with a poor prognosis
A 9-year-old girl attends with her mother. The 46 has a large occlusal cavity with a history of pain lasting a few seconds after sweet foods, settling spontaneously; there is no spontaneous or night pain and no swelling. The tooth is the only permanent molar erupted so far; the 45 and 47 are unerupted. Radiographs show caries close to but not clearly involving the pulp, and open apices. The child is anxious and has had no previous restorative treatment. The mother asks whether the tooth should just be taken out because "it will be replaced anyway."
1. How would you respond to the mother's suggestion of extraction, and what factors guide the decision?
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Extraction is the wrong default here, and the reasoning should be explained in terms the mother can follow.
- This is a permanent tooth, not a baby tooth. The 46 is the first permanent molar and will not be replaced. It is the cornerstone of the developing occlusion.
- The symptoms are reassuring. Pain only to sweet foods that settles quickly, with no spontaneous or night pain and no swelling, suggests reversible inflammation rather than irreversible pulpitis. That points towards preservation, not extraction.
- Extraction at 9 would be a significant loss. The 45 and 47 are unerupted; early loss of the 46 risks space loss, drifting, and overeruption, and would commit her to complex orthodontic or prosthetic management later.
- Open apices mean endodontic treatment, if needed, would be more complex (apexification or regenerative approaches), which is another reason to avoid irreversible pulp exposure and to preserve vitality if possible.
Tell the mother: the aim is to keep the tooth alive and functioning, and the plan is a conservative restoration with careful caries removal, with review to confirm the pulp is settling.
2. Outline your management plan, including how you would manage her anxiety and what you would do if the pulp is exposed.
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Behaviour management first:
- Use tell-show-do, a clear explanation to both child and mother, and agree a stop signal.
- Consider a short familiarisation visit or topical anaesthetic before infiltration; keep appointments short and praise appropriate behaviour.
- Treat with the mother present if that helps the child settle, and consider inhalation sedation if anxiety prevents treatment.
Restorative plan:
- Isolate the tooth, remove caries conservatively, and aim for a protective restoration (e.g. a well-sealed direct restoration; a preformed metal crown may be considered if the tooth is heavily broken down).
- Avoid unnecessary exposure of the pulp.
If the pulp is exposed:
- In a vital, symptom-free tooth with open apices, a conservative vital pulp approach (e.g. partial or full pulpotomy) may be appropriate depending on the size of exposure and bleeding control; otherwise refer for specialist endodontic assessment.
- Do not extract without a full discussion and orthodontic input.
Review: confirm symptoms have settled and monitor the developing occlusion, with a plan to reassess as the 45 and 47 erupt.