Class I malocclusion treatment: Influence of a missing mandibular incisor on anterior guidance

This case report describes the orthodontic treatment of a patient with a deep-overbite Angle Class I malocclusion, agenesis of a mandibular central incisor, and 2 supernumerary teeth, which caused impaction of the mandibular first premolars. The 15-year-old patient also had a convex profile, maxilla...

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Bibliographic Details
Published in:American journal of orthodontics and dentofacial orthopedics 2010-07, Vol.138 (1), p.109-117
Main Authors: Barros, Sérgio Estelita C, Janson, Guilherme, Torres, Fernando César, de Freitas, Marcos Roberto, de Almeida, Renato Rodrigues
Format: Article
Language:English
Subjects:
Adolescent
Anodontia - complications
Anodontia - physiopathology
Biological and medical sciences
Cephalometry
Dental Enamel - surgery
Dental Occlusion
Dentistry
Extraoral Traction Appliances
Facial bones, jaws, teeth, parodontium: diseases, semeiology
Female
Humans
Incisor - abnormalities
Incisor - physiopathology
Malocclusion, Angle Class I - complications
Malocclusion, Angle Class I - therapy
Mandible
Medical sciences
Non tumoral diseases
Orthodontics, Corrective - instrumentation
Orthodontics, Corrective - methods
Otorhinolaryngology. Stomatology
Tooth Extraction
Tooth, Supernumerary - complications
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Summary:This case report describes the orthodontic treatment of a patient with a deep-overbite Angle Class I malocclusion, agenesis of a mandibular central incisor, and 2 supernumerary teeth, which caused impaction of the mandibular first premolars. The 15-year-old patient also had a convex profile, maxillary dentoalveolar protrusion, and deficiency of space for the correct alignment of teeth. Therefore, treatment consisted of fixed appliance therapy, cervical headgear, extraction of the supernumeraries and the mandibular and maxillary first premolars, and mesiodistal reduction of the maxillary incisors to solve the arch perimeter discrepancy as much as possible with interproximal stripping. This method of treatment significantly improved the patient's facial and dental esthetics and provided a good functional occlusion, despite the absence of a mandibular incisor, which generally impairs achieving adequate incisal guidance.
ISSN:0889-5406
1097-6752
DOI:10.1016/j.ajodo.2008.02.030