Evaluate periodontal bone support of maxillary central incisors (MCI) in patients with bilateral complete cleft lip and palate (BCCLP). Determine if syndromic diagnosis, age at time of alveolar bone graft (ABG), presence of maxillary lateral incisor (MLI), history of dentofacial orthopedics, maxillary expansion, and pre-maxillary osteotomy are associated with the periodontal bone support of MCI.
Design
Retrospective radiographic study.
Setting
Tertiary care children's hospital
Patients
One hundred seventy-nine patients with BCCLP (22 syndromic) who had post-operative ABG cone beam computed tomography (CBCT) scans taken between 2002-2018.
Main Outcome Measures:
Crown to root (C/R) ratio of MCI measured on CBCT scans.
Results
The C/R ratio in 65% of MCI indicated periodontally compromised teeth. Presence of a MLI improved bone support on adjacent MCI when compared to those missing a MLI (51.4% vs 28.4%, P = .010). There was no significant difference in C/R ratios for syndromic diagnosis, age at ABG, history of dentofacial orthopedics, maxillary expansion, and pre-maxillary osteotomy.
Conclusions
The majority of MCI in patients with BCCLP are periodontally compromised but bone support is improved when cleft adjacent lateral incisors are present.
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