Ojective: This study analized the outcomes of nongrowing patients with unilateral mandibular hypoplasia (UMH) treated according to a specific protocol which combines, in a standardized sequence, distraction osteogenesis, orthodontic treatment and conventional maxillo-mandibular osteotomies. Methods: Six patients with UMH, who underwent this surgical protocol, were evaluated using aesthetic and dental-periodontal assessment. Patient’s satisfaction was assessed by questionnaire. Surgical changes were analyzed using cephalometric data and three-dimensional facial surface data before surgery (T0) and at long-term follow-up (T1). Results:Four patients (2 female and 2 male; average age: 17.3 years; average follow-up: 36 months, range: 24-49), were included in this study. The normalization of facial proportion and a high increase in symmetry were evident. Residual defects were documented in the postoperative symmetry of the chin. At the questionnaire, all patients gave favorable responses to their facial changes; for the majority of subjective parameters, all patients improved. Conclusions: A multi-stage treatment protocol which combines ipsilateral distraction osteogenesis, orthodontic phase and conventional osteotomies for correction of facial deformities in patients with UMH is a valid procedure for skeletal and occlusal stability. An evident improvement of the facial appearance is also achieved. However, future studies are needed to enlarge patient population.
Unilateral mandibular hypoplasia in adult patients: distraction osteogenesis and conventional osteotomies in a standardized sequence
GERBINO, GIOVANNI;ZAVATTERO, EMANUELE;PASSALACQUA, Fabio;VERZE', Laura;RAMIERI, Guglielmo
2014-01-01
Abstract
Ojective: This study analized the outcomes of nongrowing patients with unilateral mandibular hypoplasia (UMH) treated according to a specific protocol which combines, in a standardized sequence, distraction osteogenesis, orthodontic treatment and conventional maxillo-mandibular osteotomies. Methods: Six patients with UMH, who underwent this surgical protocol, were evaluated using aesthetic and dental-periodontal assessment. Patient’s satisfaction was assessed by questionnaire. Surgical changes were analyzed using cephalometric data and three-dimensional facial surface data before surgery (T0) and at long-term follow-up (T1). Results:Four patients (2 female and 2 male; average age: 17.3 years; average follow-up: 36 months, range: 24-49), were included in this study. The normalization of facial proportion and a high increase in symmetry were evident. Residual defects were documented in the postoperative symmetry of the chin. At the questionnaire, all patients gave favorable responses to their facial changes; for the majority of subjective parameters, all patients improved. Conclusions: A multi-stage treatment protocol which combines ipsilateral distraction osteogenesis, orthodontic phase and conventional osteotomies for correction of facial deformities in patients with UMH is a valid procedure for skeletal and occlusal stability. An evident improvement of the facial appearance is also achieved. However, future studies are needed to enlarge patient population.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.