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Dr Jurgita Smiles

Black Triangle Closure

A dark triangular gap had opened between this patient's upper front teeth where the gum had receded from the contact point, catching food and drawing the eye in every photograph. Working under rubber dam, a shaped matrix was placed to carry composite down into the space, and tooth-coloured material was layered against each tooth to broaden the contact and close the triangle from the gum edge upwards. The contour was then finished and polished so the gum tissue sits comfortably against it and floss passes cleanly. No healthy enamel was cut. Treatment was carried out in Marylebone, London, and results shown are individual to this patient.

Shared with patient consent. Results are individual to this patient.

Retracted before and after comparison of the upper front teeth, showing a dark triangular gap between the central incisors above and the closed, contoured contact below.

Clinical photos

  • Clinical photograph under blue rubber dam showing the black triangle between the central incisors above, and a shaped matrix in place ready for composite below.
    Under rubber dam — the space isolated and the matrix placed
  • Clinical photograph under rubber dam showing the matrices adapted around the central incisors above, and the newly closed contact after layering below.
    Composite layered against each tooth to rebuild the contact
  • Angled clinical close-up of the upper front teeth with an open black triangle above and the finished, polished restoration with a closed contact below.
    Close-up before and after — contour, contact and gum profile
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