PMC5227130_01
Panoramic radiograph of a 6-year-old boy with normal dental position and development of the mandibular permanent lateral incisors.
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School of Dental Medicine, demonstrated normal dental position and development of the mandibular permanent lateral incisors, which are expected to erupt into their proper position in the arch uneventfully (Figure 1). Surprisingly enough and for unknown reason, a follow-up panoramic radiograph taken two years later, at the age of 8 years, demonstrated bilateral distal deflection of the mandibular permanent lateral incisors bypassing the deciduous lateral incisors and canines and ectopically erupted rotated in the place of the deciduous first molars causing their early exfoliation (Figure 2).
Panoramic radiograph at the age of 8 years, showing the mandibular permanent lateral incisors ectopically erupted and rotated in the place of the first deciduous molars causing their early exfoliation.
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School of Dental Medicine, demonstrated normal dental position and development of the mandibular permanent lateral incisors, which are expected to erupt into their proper position in the arch uneventfully (Figure 1). Surprisingly enough and for unknown reason, a follow-up panoramic radiograph taken two years later, at the age of 8 years, demonstrated bilateral distal deflection of the mandibular permanent lateral incisors bypassing the deciduous lateral incisors and canines and ectopically erupted rotated in the place of the deciduous first molars causing their early exfoliation (Figure 2).
Pretreatment intraoral photographs showing the mandibular right and left lateral incisors ectopically erupted rotated in the place of the early exfoliated first deciduous molars.
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The mandibular permanent lateral incisors have ectopically erupted bilaterally distal to the deciduous canines with 90 degrees of rotation, causing early exfoliation of the deciduous first molars (Figure 3).