Mandibular Symphyseal Bone Graft for Reconstruction of Alveolar Cleft Defects: Volumetric Assessment with Cone Beam Computed Tomography 1-Year Postsurgery

Cleft Palate-Craniofacial Journal - Tập 53 Số 1 - Trang 64-72 - 2016
Bo Werner Linderup1, Paolo M. Cattaneo2, John Jensen2, Annelise Küseler3,4,5
1Department of Orthodontics, School of Dentistry, Health, Aarhus University.
2Department of Oral and Maxillofacial Surgery, Aarhus University Hospital.
3Cleft Lip Palate Center, Aarhus, Denmark
4Cleft Lip Palate Center, Aarhus, Denmark; Department of Orthodontics, Health, Aarhus University, Aarhus, Denmark; and Department of Oral and Maxillofacial Surgery, Aarhus University Hospital, Aarhus, Denmark.
5Department of Orthodontics, Health, Aarhus University, Aarhus, Denmark

Tóm tắt

Objective The aims of this retrospective study were to evaluate the volumetric outcome of mandibular symphyseal bone graft in patients with unilateral cleft lip and palate by estimating the bone fill 1-year postoperatively on cone beam computed tomography. The outcome was assessed in relation to the (1) root development stage of the cleft side canine, (2) presence/absence of a cleft side lateral incisor, and (3) volume size of the preoperative cleft defect. Methods The alveolar bone defect volume of 32 consecutive unilateral cleft lip and palate patients aged 8 years 1 month to 11 years 11 months was evaluated using a recently defined and standardized protocol. The outcome was calculated as the percentage of bone fill using the formula (VOLpre - VOLpost) / VOLpre) x 100. Results The preoperative mean alveolar cleft volume was 934 mm3, and the average percentage bone fill was 87%. There was no significant difference between bone fill and root developmental stage of the cleft-side canine ( P = .882) nor presence/absence of the cleft side lateral incisor ( P = .803). The size of the cleft defect did not correlate with the bone fill ( r = .03, P = .84). Conclusions Secondary alveolar bone grafting with mandibular symphyseal bone graft in patients with unilateral cleft lip and palate is an attractive procedure assessed from the volumetric outcome using cone beam computed tomography. The 1-year average bone fill of 87% was not significantly influenced by root development stage of the cleft-side canine, presence or the absence of a cleft side lateral incisor, or size of the alveolar defect.

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Cleft Palate-Craniofacial Journal

Tập 53 Số 1

64-72

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