Abstract
This paper presents a concept and methodology of biocompatible 3D printing in combination
with intraoral and extraoral 3D surface scans for individualized appliances in patients
with craniofacial disorders. The concept arises from the clinical problem of rapid
growth and minimal compliance of infants with such disorder and the urgency to effectively
treat the often severe, life-threatening symptoms such as airway obstruction. Methodology
and interdisciplinary cooperation are explained in a real case of Pierre Robin sequence
– infant with micrognathia and airway obstruction. Interdisciplinary cooperation principles
for experts from departments of orthodontics and cleft anomalies, pediatric pneumology
and phthisiology as well as pediatric otorhinolaryngology department. Scanning of
intraoral structures was performed with iTero® Orthodontic Scanner, face scanning
was performed with an app Bellus3d Dental Pro on iPad Pro® 2020 with TrueDepth and
scans were processed in Autodesk® Meshmixer™. Examples of digital workflows in 3D
design, reverse design, and individualization of Tübingen palatal plate are presented.
Also, examples of creation of two-part biocompatible 3D printed appliances based on
the merged intraoral and extraoral soft-tissue scan are presented. Clinical feedback
evaluation of presented clinical example suggests the need for an update of the intraoral
appliance every 10 days in a 6-months old infant to preserve comfort and thus infant
compliance with the appliance. Results also confirm that TrueDepth sensor can be utilized
with a smartphone app to create face scan that provides sufficiently precise data
to design and print viable extraoral parts of orthodontic appliance.
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Article info
Publication history
Published online: October 13, 2022
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