Ectodermal dysplasia

Overview

Board takeaway: Rebuild function with early prostheses. Ectodermal dysplasia affects two or more ectodermal structures: hair, teeth, nails, or sweat glands.

How does Ectodermal dysplasia affect dental management?

• Prostheses: Early removable partial or complete dentures, remade as the child grows
• Tooth shape: Composite build-ups to reshape conical teeth
• Implant timing: Implants after growth (sometimes earlier in the anterior mandible)
• Heat precautions: keep the operatory cool, avoid heavy draping, and watch for hyperthermia during long visits or general anesthesia. Alert anesthesia to absent sweating and hyperthermia risk.
• Cleft coordination: With a cleft (TP63 forms), coordinate prostheses and implant timing with the cleft and craniofacial team

Exam pearl

What is Ectodermal dysplasia?

A group of inherited disorders affecting the development of two or more ectoderm-derived structures, such as teeth, hair, nails, skin, and sweat glands.

What are the main systemic features of Ectodermal dysplasia?

• Hypohidrotic ED: commonly X-linked EDA variants; females can have clinically important findings.
• Other inheritance: this is a heterogeneous group; autosomal dominant and recessive forms also occur, including EDAR, EDARADD, and WNT10A.
• Ectodermal findings: Sparse, fine hair; reduced or absent sweating with hyperthermia and fevers; dry skin; dystrophic nails
• Facial findings: Frontal bossing, saddle nose, thick everted lips, periorbital hyperpigmentation
• TP63-related EDs: mostly autosomal dominant; add clefting.
  • EEC: ectrodactyly–ectodermal dysplasia–clefting
  • AEC: Hay–Wells; ankyloblepharon
  • Rapp–Hodgkin

What oral findings occur in Ectodermal dysplasia?

• Hypodontia to anodontia; conical or peg-shaped anterior teeth; taurodont molars
• Underdeveloped alveolar ridges; reduced vertical dimension
• Reduced salivary flow in some types
• Cleft lip and/or palate in the TP63 forms (EEC, AEC, Rapp–Hodgkin), not in classic hypohidrotic ED

For Ectodermal dysplasia, when can prosthetic treatment begin?

• Removable partial or complete dentures: consider during the preschool years when function, development, cooperation, and family support make use feasible
• Growth and eruption: review fit, retention, occlusion, and hygiene regularly; adjust or remake as needed rather than using a fixed replacement interval. Composite build-ups can reshape conical teeth
• Implants: generally defer until growth is complete; selected severe anodontia cases may justify earlier anterior mandibular implants after multidisciplinary assessment and discussion of future revision

Sources

• Supplemental study guide: Pediatric Dental Study Guide: Ectodermal dysplasia
• MedlinePlus Genetics: Ectrodactyly, ectodermal dysplasia, and cleft lip/palate syndrome
• Policy on the Management of Patients with Cleft Lip/Palate and Other Craniofacial Anomalies
• Management of the Developing Dentition and Occlusion in Pediatric Dentistry
• Supplemental genetics: MedlinePlus Genetics: hypohidrotic ectodermal dysplasia
• AAPD best practice: AAPD: Management of Dental Patients with Special Health Care Needs (2026)