by Richard S. Bernstein, DDS
From time immemorial, children engaged in playful activities have experienced accidents causing injuries
to the oral cavity. These injuries can range from something as minor as a slight chip to something as
catastrophic as an avulsed permanent tooth. Many minor injuries to children’s teeth can be treated
relatively easily and affordably with a composite filling. However, in the event the child needs something
more invasive, such as endodontic treatment, forced eruptions, flippers, a porcelain crown or another
permanent restoration, treatment can be costly. These expensive and invasive restorative solutions have
always been far from ideal, since they need to be replaced within a few years as the child matures into
adulthood. Fortunately, LuxaCrown, a new crown and bridge material from DMG, makes it possible to
bridge this gap by creating affordable semi-permanent restorations that can last up to five years.
A ten-year-old girl referred to my office by a local pediatric dentist presented with an extensive fracture
of the left central incisor #9. Part of the fracture extended down the lingual subgingival to bone level,
and the pulpal chamber was exposed. Additionally, due to severe spacing, the patient would need
orthodontic treatment in the future. After consulting with the endodontist and the parents, it was
decided to save the tooth with a root canal treatment followed by a crown build-up. Had I not recently
added LuxaCrown to my crown and bridge material armamentarium, it is very possible that a different –
and more invasive – course of treatment would have been pursued.
Based on the endodontic consultation, my first step was to perform a root canal treatment. An
impression was created with a lab-fabricated, all-porcelain post/core using a leucite glass-ceramic (IPS
Empress, Ivoclar Vivadent). I then created a build-up of #9 as a mirror image of #8 on the hard model.
Next, I bonded the post/core into the root of #9 using a core build-up material (LuxaCore Z Dual,
DMG), after which I prepped the existing tooth to the gingival level with a chamfer finish line.
I then took a polyvinyl matrix (Honigum, DMG) of the mock-up, expressed a semi-permanent crown and
bridge material (LuxaCrown shade A1, DMG) into the impression, and placed it in the mouth over the
dentition. After one minute, I removed, trimmed and polished the LuxaCrown restoration. Various burs
(ET, Brasseler), polishing discs and rubber points were used to finish the restoration just as I would if it
were a permanent composite restoration. The margins were finished, trimmed, smoothed and polished.
Finally, a varnish (LuxaGlaze, DMG) was placed and light-cured. The LuxaCrown semi-permanent crown
was bonded over the tooth with a resin cement (Theracem, BISCO).
At the one-month follow-up, the patient was very pleased with the esthetics, durability and fit of theLuxaCrown semi-permanent crown.