Unilateral Maxillary Lateral Incisor Agenesis with Mini Implant Prostheses

Many terms can be used to describe missing teeth. Anodontia is the complete absence of teeth; Oligodontia or partial anodontia means absence of six or more teeth; hypodontia denotes missing teeth, but usually less than six and often the size and shape of remaining teeth are altered as well, congenitally missing teeth or agenesis is defined as teeth that failed to develop or are not present at birth. Agenesis of any tooth can cause dental asymmetries, alignment difficulties, and arch length discrepancies but when the missing tooth is in the anterior region of the maxilla, the discrepancies can be quite noticeable.The maxillary lateral incisor is the second most frequently missing tooth after the mandibular second premolar even though Muller et al. found that maxillary lateral incisors experience the most agenesis (not including third molars). 

Agenesis of the maxillary lateral incisor is also linked with anomalies and syndromes such as agenesis of other permanent teeth, microdontia of maxillary lateral incisors (peg laterals), palatally displaced canines and distalangulations of mandibular second premolars.Absence of any tooth can cause treatment difficulties, but agenesis of the maxillary lateral incisor poses a unique set of restorative challenges. Because the maxillary lateral incisor is located in the esthetic zone, it is essential that bone height, papilla height, enamel color, and shape match the surrounding teeth. 

Maxillary Lateral Incisor Agenesis
Clinicians attempt to maintain the proper anterior overbite, overjet and ideal interarch relationships of the canine teeth while creating enough space for a fixed partial denture or more commonly, an implant with a single crown restoration, but few treatment options are available for patients with agenesis of one or both maxillary lateral incisors. One option is to close the space(s) and restore the remaining teeth accordingly and the second is to open the space for a fixed partial denture or implant. Read more............

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