First molars extraction in the treatment of hyperdivergent patient with dental bimaxil- lary protrusion

Fabrício VALARELLI, Rayane Oliveira PINTO, Rodrigo Hitoshi HIGA, Dirceu Barnabé RAVELI, Danilo Pinelli VALARELLI

Introduction: The extraction of permanent molars for orthodontic purposes is considered atypical, however, it can be indicated in cases of restorative, endodontic or periodontal involvement of such teeth. Objective: The aim of this paper is to report the treatment of a 34-year-old female patient, hyperdivergent, who had dental bimaxillary protrusion, absence of lip sealing and convex profile. The treatment was performed with extraction of four first molars, justified by the need for space for incisors retraction and improvement of the facial profile, in addition to presenting extensive restorations in the first permanent molars. After the extractions, the space closure mechanics was performed with no anchorage. Results: Orthodontic treatment provided a significant improvement in the face, decreasing the convex profile and favoring the lip sealing. The Class I relationship was maintained by preserving the premolars, allowing the third molars to erupt. The case was concluded with excellent static and functional occlusion. Conclusion: Extraction of permanent molars, when well indicated, can be an excellent option for the treatment of hyperdivergent patients associated with dental bimaxillary protrusion.

Keywords: Tooth extraction. Orthodontics, corrective. Malocclusion, Angle Class I. Molar.

How to cite: Valarelli F, Pinto RO, Higa RH, Raveli DB, Valarelli DP. First molars extraction in the treatment of hyperdivergent patient with dental bimaxillary protrusion. Clin Orthod. 2021 Apr-May;20(2):115-27.

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