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.
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.
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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