Cerebral Palsy and Dental Care
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Direct answer
Cerebral palsy — a non-progressive disorder of posture and movement from an insult to the developing brain — presents dentally as a cluster rather than a single problem: bruxism with heavy attrition, drooling from uncoordinated swallowing (not excess saliva), malocclusion with class II and open-bite tendencies in the spastic quadriplegic pattern, caries fed by soft diets and sugared medications, GERD erosion of upper incisors, and gingival overgrowth when phenytoin is the anticonvulsant. Chairside management is engineered around movement and airway: short morning appointments, head stabilised in midline with the parent's help, instruments introduced from the sides to avoid the bite reflex, a mouth prop with high-volume suction, and unhurried communication for the dysarthric child who understands more than speech suggests.
What you must remember
- Definition and paradox: a static lesion of the immature brain producing posture and movement disorders — the classic viva exchange holds that the damage is non-progressive while the clinical picture evolves with growth.
- Types and dental relevance: spastic (the majority, commonly quoted around 60-70 per cent; diplegia, hemiplegia, quadriplegia), dyskinetic-athetoid (kernicterus link; unpredictable movements), ataxic, hypotonic and mixed; seizures accompany up to about a third.
- Drooling (sialorrhoea): caused by impaired swallowing frequency and control, not hypersalivation — the ladder runs from orofacial physiotherapy and head-forward positioning to anticholinergics and surgical referral.
- Medication and diet effects: phenytoin gingival overgrowth of the anterior interdental papillae (plaque-controllable; drug change negotiated with the physician), sugared anticonvulsant syrups (sugar-free versions requested), soft puréed diets, and GERD erosion of maxillary incisor palatal surfaces.
- Chairside reflexes: an exaggerated bite reflex answers midline stimulation — approach laterally, never place fingers between the teeth of an unprepared child; a heightened gag reflex yields to slow desensitisation.
- Airway and aspiration: impaired swallow coordination makes supine positioning with copious water hazardous — minimal irrigation, high-volume evacuation, and an upright tilt when reflux history exists.
- Transfer and definitive care: two-person wheelchair transfer or a reclining wheelchair; protective stabilisation with consent for essential short procedures; general anaesthesia when needs accumulate, the anaesthetist warned about aspiration and seizures.
A restorative visit with a child with spastic quadriplegia
An eight-year-old with spastic quadriplegia needs two restorations and scaling. The appointment is placed in the morning when tone and mood are best, and shortened to a single quadrant. She is transferred with the two-person lift her mother directs, positioned with head midline and slightly flexed — extension increases extensor tone — and the mother stays at the head. Topical then infiltration anaesthesia is delivered from the side of the mouth with slow, narrated movements; the mirror and syringe never approach the midline first, because a midline touch fires the bite reflex that guards the entrance to the whole procedure.
The rubber dam earns its keep twice over here — soft tissue protection from an unexpected movement becomes impossible without it — and a padded mouth prop keeps access open while high-volume suction runs constantly, since her swallow is slow and pooling begins within minutes. Speech is the quiet difficulty: her dysarthria disguises a sharp mind, so the team speaks to her, not over her. The varnish-and-glass-ionomer restoration finishes inside thirty minutes, and the mother's home programme — positioning for brushing, a floss-holder, the sugar-free syrup request to the neurologist — is the actual treatment plan.
What examiners keep asking
The opening definition question hides its real target — the non-progressive-lesion, changing-picture paradox — and candidates who answer only "birth asphyxia" have missed it. The findings list is asked as an enumeration (bruxism, drooling, malocclusion, caries, GERD erosion, phenytoin hyperplasia) with the drooling mechanism as the discriminating detail: impaired swallowing, not salivary excess. MCQs favour the type frequencies (spastic most common), the phenytoin-overgrowth link, and bite-reflex handling (lateral instrument approach). Practical vivas stage the scenario — "how will you examine this child in a wheelchair" — and reward the transfer, positioning and parental-partnership sequence. Indian university papers pair cerebral palsy with Down syndrome as the two standard special-child long answers, and the external's closer: "why is the lesion non-progressive though the disability changes?" — answered in one sentence about growth and tone.
Frequently asked questions
Define cerebral palsy and its main types.
A non-progressive posture and movement disorder from injury to the developing brain; types include spastic (diplegia, hemiplegia, quadriplegia), dyskinetic-athetoid, ataxic, hypotonic and mixed forms.
Why do children with cerebral palsy drool?
Because swallowing frequency and coordination are impaired — saliva production is normal; management spans physiotherapy, posture, anticholinergics and surgical referral.
What is the bite reflex and how is it managed chairside?
A forceful jaw closure triggered by midline oral stimulation; instruments are introduced laterally, fingers never placed between unprepared teeth, and padded props used with suction.
Which drug causes gingival overgrowth in these children?
Phenytoin among the older anticonvulsants — overgrowth of anterior interdental papillae managed by plaque control and physician-negotiated drug substitution.
When is general anaesthesia chosen for dental care in cerebral palsy?
When treatment needs exceed tolerance, aspiration or seizure risk makes chairside work unsafe, or desensitisation has failed.