Treatment of infra-occluded primary molars in patients with dental ageneses - 27/08/14

Doi : 10.1016/j.ortho.2014.06.004

Marie Medio ^a,^⁎ , Muriel de la Dure Molla ^b
^a Département d’orthodontie, hôpital Pitié-Salpêtrière, AP–HP, université Paris 7 Denis-Diderot, 5, rue Thomas-Mann, 75205 Paris cedex 13, France
^b Centre de référence des malformations rares de la face et de la cavité buccale, hôpital Rothschild, AP–HP, 5, rue Santerre, 75012 Paris, France

^⁎Correspondence and reprints: 14, rue Le Brun, 75013 Paris, France.

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Summary

When dental agenesis is encountered, several treatment solutions can be considered: extraction of the primary tooth and closure of the space or, alternatively, conservation of the space with the primary tooth still on the arch until a prosthesis can be placed. In the presence of premolar agenesis, the corresponding primary molar may be infra-occluded relative to the occlusal plane. This situation complicates the treatment plan. Depending on the clinical setting, it can be useful to restore occlusal contacts using composite overlays. We will demonstrate this treatment option via two clinical cases. Tooth conservation helps maintain the bone volume that will later facilitate placement of an implant and limit extrusion of the antagonists as well as tipping of the neighboring teeth.

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Key-words : Infra-occlusion, Dental agenesis, Primary molar, Ankylosis