Replacing old crowns: a new smile fifteen years on

Fifteen years after her first crowns, this patient wanted a new smile, more harmonious and more natural. Six monolithic zirconia crowns, from the upper right canine to the upper left canine (13 to 23), replaced the old ones: an aesthetic rehabilitation of the front teeth, with shapes and proportions designed with her.

  • monolithic zirconia crowns
  • old crowns
  • aesthetic dentistry
  • smile aesthetics
  • front teeth crowns
  • anterior rehabilitation
  • digital wax-up
  • periodontal treatment
  • provisional crowns
  • endodontic retreatment

Dr Jérémy Haccoun, dentist Updated

The smile from the front, before and after: at the top, the old crowns, uneven in shape; at the bottom, the six monolithic zirconia crowns, from canine to canine.
01

Crowns placed fifteen years ago

This patient had worn crowns on her six upper front teeth, from canine to canine, for about fifteen years. She wanted a new smile, more harmonious, with rethought shapes and proportions.

Close up, the photographs show what was troubling aesthetically: shapes that had become uneven and the edge of the old crowns marked at the gum line. Crowns placed fifteen years ago can still hold, and no longer suit the smile one wants.

02

Before the ceramic: the gum, the roots, the teeth

Replacing old crowns on the front teeth is not just a matter of fitting new ones. An aesthetic, lasting result depends first on what supports them: a healthy gum, well-treated roots and teeth rebuilt on a solid base. That is what lets the gum line stay stable and the new crowns keep their natural look over time.

Three stages were devoted to this, behind the scenes of the new smile: Periodontal treatment, that is, a deep cleaning of the gum and roots; redoing the existing root canal treatments (endodontic retreatments) on the root-treated teeth; and the build-ups, the reconstructions that give each tooth back the base that will carry its crown.

03

A design drawn up, worn for six weeks, then made

Treatment took place in several stages.

  1. A digital wax-up, the aesthetic design of the smile: drawing the new shapes and proportions, designed with the patient, before touching the teeth.

  2. Periodontal treatment.

  3. Six weeks of provisional crowns: provisionals give time to live with the new shapes, to see them in the mirror and in photographs, and to adjust them if needed before the final crowns.

  4. The endodontic retreatments and the build-ups.

  5. Six monolithic zirconia crowns on 13, 12, 11, 21, 22 and 23: a very strong ceramic, milled from a single block, for thin crowns with a natural shade on the front teeth.

The digital wax-up: the six crowns drawn on the model, from canine to canine. A design, not a result.
04

Six monolithic zirconia crowns

Against a black background, the upper teeth seen from below, side by side: on the left, the old crowns, with a dark edge at the gum line; on the right, the six monolithic zirconia crowns.
Seen from below, before on the left and after on the right: the edge of the crowns at the gum line. Individual result.

The six monolithic zirconia crowns, from one canine to the other, replaced the old crowns, with shapes and proportions designed with the patient: a more harmonious smile, with regular, natural-looking front teeth.

This case shows what an aesthetic rehabilitation of the front teeth requires behind the scenes: a design drawn up first, a treated gum, redone roots and rebuilt teeth, before the ceramic. This is how aesthetic dentistry is practised at the practice in Levallois-Perret: the visible result rests on what cannot be seen. A team effort, from the first drawing to the final finishing, with the dental laboratory.

Individual result: another case of metal-ceramic crowns redone in layered zirconia is presented among the complex rehabilitations.

The front teeth close up, against a black background: at the top, the old crowns, with a dark line at the gum edge; at the bottom, the six monolithic zirconia crowns.
Close up, before at the top and after at the bottom: six monolithic zirconia crowns, from canine to canine.

Other similar cases.

Smile design.

Smile design brings together photographs, measurements and simulation to build a plan in keeping with the face.

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