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The effect of autologous alveolar bone grafting on nasolabial asymmetry in unilateral cleft lip and palate

(2020) JOURNAL OF CRANIOFACIAL SURGERY. 31(6). p.1687-1691
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Abstract
The objective of this study was to examine whether an autologous alveolar bone graft has an effect on the nasolabial asymmetry in unilateral cleft lip, alveolus, and palate. Fifteen children (mean age 7.5 +/- 2.4 years) with non-syndromic unilateral cleft lip and palate (CLP) were included. Non-ionizing three-dimensional images were acquired prior to and three months after the alveolar bone grafting procedure. A 2D and a landmark-independent 3D asymmetry assessment were used to detect changes of asymmetry in the nasolabial area. For the 2D assessment, a cleft and non-cleft side ratio for 4 linear nasal and 2 linear labial distances was expressed as a Coefficient of Asymmetry (CA). The 3D asymmetry assessment comprised a robust superimposition of the face with its mirror image, expressed as a root-mean-square-error (RSME) in mm. A significant decrease in the CA for the labial distance from the facial midline to the labial commissure was observed (P = 0.036). Also, the CA for the labial distance from the facial midline to the highest point of Cupid's bow increased significantly (P = 0.028). Non-significant changes were observed for the CA for the 2 nasal distances and the 2 other labial distances. No significant changes in 3D nasal asymmetry were detected (P = 0.820). Alveolar bone grafting completes the alveolar ridge but has only little to no clinical effect on the asymmetry of the secondary cleft lip nasal deformity.
Keywords
Surgery, Otorhinolaryngology, General Medicine, Alveolar bone grafting, facial asymmetry, non-ionizing three-dimensional imaging, superimposition, unilateral cleft lip and palate

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MLA
Thierens, Laurent, et al. “The Effect of Autologous Alveolar Bone Grafting on Nasolabial Asymmetry in Unilateral Cleft Lip and Palate.” JOURNAL OF CRANIOFACIAL SURGERY, vol. 31, no. 6, 2020, pp. 1687–91, doi:10.1097/scs.0000000000006393.
APA
Thierens, L., KERCKHOF, E., De Roo, N., Temmerman, L., Nadjmi, N., Swennen, G., … De Pauw, G. (2020). The effect of autologous alveolar bone grafting on nasolabial asymmetry in unilateral cleft lip and palate. JOURNAL OF CRANIOFACIAL SURGERY, 31(6), 1687–1691. https://doi.org/10.1097/scs.0000000000006393
Chicago author-date
Thierens, Laurent, EVELINE KERCKHOF, Noëmi De Roo, Liesbeth Temmerman, Nasser Nadjmi, Gwen Swennen, Alejandra Ortega-Castrillon, Peter Claes, and Guy De Pauw. 2020. “The Effect of Autologous Alveolar Bone Grafting on Nasolabial Asymmetry in Unilateral Cleft Lip and Palate.” JOURNAL OF CRANIOFACIAL SURGERY 31 (6): 1687–91. https://doi.org/10.1097/scs.0000000000006393.
Chicago author-date (all authors)
Thierens, Laurent, EVELINE KERCKHOF, Noëmi De Roo, Liesbeth Temmerman, Nasser Nadjmi, Gwen Swennen, Alejandra Ortega-Castrillon, Peter Claes, and Guy De Pauw. 2020. “The Effect of Autologous Alveolar Bone Grafting on Nasolabial Asymmetry in Unilateral Cleft Lip and Palate.” JOURNAL OF CRANIOFACIAL SURGERY 31 (6): 1687–1691. doi:10.1097/scs.0000000000006393.
Vancouver
1.
Thierens L, KERCKHOF E, De Roo N, Temmerman L, Nadjmi N, Swennen G, et al. The effect of autologous alveolar bone grafting on nasolabial asymmetry in unilateral cleft lip and palate. JOURNAL OF CRANIOFACIAL SURGERY. 2020;31(6):1687–91.
IEEE
[1]
L. Thierens et al., “The effect of autologous alveolar bone grafting on nasolabial asymmetry in unilateral cleft lip and palate,” JOURNAL OF CRANIOFACIAL SURGERY, vol. 31, no. 6, pp. 1687–1691, 2020.
@article{8678078,
  abstract     = {{The objective of this study was to examine whether an autologous alveolar bone graft has an effect on the nasolabial asymmetry in unilateral cleft lip, alveolus, and palate. Fifteen children (mean age 7.5 +/- 2.4 years) with non-syndromic unilateral cleft lip and palate (CLP) were included. Non-ionizing three-dimensional images were acquired prior to and three months after the alveolar bone grafting procedure. A 2D and a landmark-independent 3D asymmetry assessment were used to detect changes of asymmetry in the nasolabial area. For the 2D assessment, a cleft and non-cleft side ratio for 4 linear nasal and 2 linear labial distances was expressed as a Coefficient of Asymmetry (CA). The 3D asymmetry assessment comprised a robust superimposition of the face with its mirror image, expressed as a root-mean-square-error (RSME) in mm. A significant decrease in the CA for the labial distance from the facial midline to the labial commissure was observed (P = 0.036). Also, the CA for the labial distance from the facial midline to the highest point of Cupid's bow increased significantly (P = 0.028). Non-significant changes were observed for the CA for the 2 nasal distances and the 2 other labial distances. No significant changes in 3D nasal asymmetry were detected (P = 0.820). Alveolar bone grafting completes the alveolar ridge but has only little to no clinical effect on the asymmetry of the secondary cleft lip nasal deformity.}},
  author       = {{Thierens, Laurent and KERCKHOF, EVELINE and De Roo, Noëmi and Temmerman, Liesbeth and Nadjmi, Nasser and Swennen, Gwen and Ortega-Castrillon, Alejandra and Claes, Peter and De Pauw, Guy}},
  issn         = {{1049-2275}},
  journal      = {{JOURNAL OF CRANIOFACIAL SURGERY}},
  keywords     = {{Surgery,Otorhinolaryngology,General Medicine,Alveolar bone grafting,facial asymmetry,non-ionizing three-dimensional imaging,superimposition,unilateral cleft lip and palate}},
  language     = {{eng}},
  number       = {{6}},
  pages        = {{1687--1691}},
  title        = {{The effect of autologous alveolar bone grafting on nasolabial asymmetry in unilateral cleft lip and palate}},
  url          = {{http://dx.doi.org/10.1097/scs.0000000000006393}},
  volume       = {{31}},
  year         = {{2020}},
}

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