Midfacial growth and dental arch relationships in bilateral cleft palate following secondary alveolar bone grafting and orthodontic intervention: Factors predicting a Le Fort I osteotomy at age 18

Publication date: Available online 26 July 2018

Source: Journal of Cranio-Maxillofacial Surgery

Author(s): Gerhard Koendert Pieter Bittermann, Adrianus P. de Ruiter, Arnold JN. Bittermann, Aebele B. Mink van de Molen, Robert JJ. van Es, Ron Koole, Antoine JWP. Rosenberg

Summary

Objective

To evaluate midfacial growth and dental arch relationships in patients treated for bilateral cleft lip and palate (BCLP).

Materials and Methods

Data were collected from all patients with BCLP treated at our hospital between 2004 and 2014, with or without premaxillary osteotomy (PO). Dental casts for pre-secondary alveolar bone grafting with PO (SABG+PO) and end-point dental casts were analyzed using the Bauru yardstick scoring system. Pre-SABG+PO, post-SABG+PO, and end-point SABG+PO lateral cephalograms were analyzed. The correlation between both scoring systems was calculated.

Results

There were no significant differences between the Bauro scores for centers in a previous study and those collected here. A negative correlation was found between the pre-SABG+PO ANB angle and pre-SABG+PO Bauro scores (R = −0.58; p = 0.000), the long-term post-SABG+PO ANB and mean end-point Bauro (R = −0.50; p = 0.000), and the pre-SABG+PO ANB and mean end-point Bauro (R = −0.51; p = 0.000).

Conclusion

We found no significant difference between pre-SABG+PO and end-point Bauro scores. There was a decrease in the SNA and ANB angle over time, indicating delayed growth of the maxilla. We found a negative correlation between the pre-SABG ANB and end-point Bauro scores. Pre-SABG ANB can be used to predict the need for Le Fort I osteotomy at age 18.

https://ift.tt/2NNg3OZ