2.3 Pregnancy, Ageing & Special Needs Patients in Dentistry

2.3 Pregnancy, Ageing & Special Needs Patients in Dentistry

Special Care Dentistry encompasses the provision of oral healthcare for individuals with physical, sensory, intellectual, mental, medical, or emotional impairments. Delivering safe, ethical, and high-quality care requires adaptations in clinical technique, pharmacological prescribing, positioning, and legal frameworks.

---

Dentistry in Pregnancy & Lactation

Pregnancy involves dramatic maternal physiological adaptations driven by elevated levels of circulating progesterone and oestrogen.

Maternal Oral Manifestations

• Pregnancy Gingivitis: Elevated progesterone increases vascular permeability, causing pronounced gingival inflammation, erythema, and bleeding in response to mild plaque accumulation. It typically peaks during the second and third trimesters.
• Pyogenic Granuloma (Pregnancy Epulis): A benign, hyperplastic vascular lesion that arises on the interdental papilla in 2–5% of pregnant women. Management relies on meticulous oral hygiene; surgical excision is reserved for post-partum if the lesion does not regress spontaneously.

Supine Hypotensive Syndrome

In the third trimester, placing a pregnant patient in a fully supine position causes the heavy gravid uterus to compress the Inferior Vena Cava (IVC) against the vertebral column. This reduces venous return to the heart, precipitating a sudden drop in cardiac output and blood pressure.

• Clinical Manifestations: Dizziness, pallor, sweating, nausea, hypotension, and fetal distress.
• Prevention & Management: Tilt the dental chair to position the patient in a left lateral tilt of 15 to 30 degrees or place a wedge/pillow under the patient's right hip. This displaces the uterus to the left, relieving IVC compression.

Dental Treatment Timing & Radiography

• First Trimester (Weeks 1–13): Period of organogenesis; limit care to emergency pain control and oral hygiene advice.
• Second Trimester (Weeks 14–27): The optimal and safest window for elective dental procedures.
• Third Trimester (Weeks 28–40): Increasing physical discomfort; perform short appointments with left lateral positioning.
• Dental Radiography: Standard dental radiographs are safe during pregnancy provided there is a clear clinical justification (FGDP/PHE guidance). Rectangular collimation and modern digital sensors minimize radiation exposure. Protective lead aprons are not routinely required by UK radiation protection regulations, but justification must be documented.

Pharmacotherapy in Pregnancy & Lactation

---

Geriatric Dentistry & Cognitive Impairment

The ageing population presents with complex dental needs driven by tooth retention into later life, polypharmacy, and age-related physiological changes.

Oral Ageing & Polypharmacy

Ageing is accompanied by dentine sclerosis, pulp canal obliteration, enamel attrition, and gingival recession. Polypharmacy (defined as taking 5 or more daily medications) is widespread among older adults. Many common drugs (antihypertensives, diuretics, antidepressants, antihistamines) possess anticholinergic side effects causing severe Xerostomia (dry mouth).

• Root Caries Management: Reduced salivary buffer capacity combined with exposed root dentine dramatically increases root caries risk. Prescribe high-concentration fluoride toothpaste (5,000 ppm sodium fluoride, Duraphat) for daily use alongside neutral sodium fluoride mouthwashes and salivary substitutes (e.g. Biotene, Saliveze).

Legal Framework: Mental Capacity Act 2005

In England and Wales, dental care for adults with impaired decision-making capacity is governed by the Mental Capacity Act (MCA) 2005:

1. Five Core Principles:
   • A person must be assumed to have capacity unless it is established that they lack capacity.
   • A person is not to be treated as unable to make a decision unless all practicable steps to help them have been taken without success.
   • A person is not to be treated as lacking capacity merely because they make an unwise decision.
   • Any act done, or decision made, under the Act for a person who lacks capacity must be done in their Best Interests.
   • Before the act is done, regard must be had to whether the purpose can be as effectively achieved in a way that is least restrictive of the person's rights and freedom of action.
2. Two-Stage Functional Assessment of Capacity:
   • Stage 1 (Diagnostic): Does the person have an impairment of, or disturbance in the functioning of, the mind or brain (e.g. dementia, severe learning disability, stroke)?
   • Stage 2 (Functional): Does the impairment prevent the person from: (a) understanding relevant information, (b) retaining that information, (c) weighing up the information to make a decision, or (d) communicating their decision?
3. Best Interests Decision-Making: If a patient lacks capacity for a specific dental procedure, the dentist must consult family, carers, and a multidisciplinary team to complete a formal Best Interests assessment (documented on an MCA Form 1), ensuring treatment is the least restrictive option.

---

Patients with Special Needs & Disabilities

Down Syndrome (Trisomy 21)

Down syndrome is associated with distinct craniofacial features and systemic medical considerations:

• Oral Manifestations: Relative macroglossia (large tongue relative to small maxilla), delayed tooth eruption, microdontia, hypodontia, high-arched palate, and malocclusion. Caries rate is frequently low due to delayed eruption, tooth spacing, and alkaline saliva.
• Periodontal Disease: Extremely high prevalence of severe early-onset periodontitis, driven by innate immune dysfunction, impaired neutrophil chemotaxis, and altered collagen synthesis.
• Medical Considerations: High incidence of congenital heart defects (40–50%) such as atrioventricular septal defects (AVSD). Additionally, up to 20% exhibit Atlanto-Axial Instability (hypermobility of the C1–C2 cervical joint), requiring extreme caution to avoid excessive neck extension during dental chair positioning.

Cerebral Palsy

Cerebral palsy is a non-progressive neuromuscular disorder causing spasticity, involuntary muscle movements (dyskinesia), and exaggerated gag reflexes.

• Clinical Adaptations: Adapt dental chair positioning using beanbags or custom padding to support physical posture. Use soft mouth props (Mckesson blocks) and rubber dam to protect the airway during treatment.
• Sialorrhoea (Drooling): Exacerbated by impaired swallowing coordination; managed conservatively or pharmacologically with transdermal hyoscine hydrobromide patches or glycopyrronium.

Learning Disabilities & Autism Spectrum Disorder (ASD)

• Communication Strategies: Utilize visual aids, Picture Exchange Communication System (PECS), Makaton sign language, or "Tell-Show-Do" techniques. Provide pre-visit "Social Stories" to familiarize the individual with the dental environment.
• Sensory Environment: Reduce sensory overload by dimming ambient lighting, turning off background suction noise, and minimizing touch triggers.
• Conscious Sedation & General Anaesthesia: When non-pharmacological behaviour management fails, Inhalation Sedation using nitrous oxide/oxygen (Entonox) is effective for mild-to-moderate anxiety. For complex dental needs or severe uncooperative distress, treatment under General Anaesthesia (GA) in a hospital day-surgery unit is indicated.